BlackTreeCVE Intelligence
← Back to the CVE catalogue
Full vulnerability report · 2021
CVE-2021-21409High confidence

Possible request smuggling in HTTP/2 due missing validation of content-length

netty · netty

Official source article: GitHub GHSA-F256-J965-7F32 ↗. Check the applicable product and release in the original source.

5.9MediumCVSS 3.1
Recommended action
Scheduled

Medium technical severity with no CISA KEV confirmation; remediate through the normal risk-based patch cycle unless local exposure raises the priority.

Patch available
R
Operational reassessment

Published severity in operational context

Open reassessment dashboard →
Published severityMediumOperational priority:Medium, unchanged from published severity.unchanged

Evidence used

  • No CISA KEV confirmation is currently recorded.
  • The selected CVSS metric records a network-reachable, unauthenticated path with no user interaction.
  • EPSS is 4.93% for the current model date.

Compensating controls

  • Validate the affected product branch and deploy the verified fixed release.
  • Restrict the affected network interface to trusted sources where business-safe.
  • Monitor vendor guidance and exploitation sources for a material change.

Verification

  1. Confirm that the asset runs netty netty and falls inside the recorded affected range.
  2. Verify the installed build against the product-specific fixed version after deployment.
  3. Validate exposure, authentication requirements and compensating controls in the actual environment.
  4. Reopen this reassessment when CVSS, KEV, EPSS, exploit evidence or remediation changes.
Mitigation target: As exposure requiresRemediation target: Within 365 days

This automated reassessment organises public evidence. It does not know asset exposure, business impact or control effectiveness and does not replace CVSS or a human risk decision.

Distribution package intelligence

Release-specific package status

Debian findings are scoped to the named distribution, release and source package. An absent finding does not mean a package is unaffected.

4 package states
Repository candidate not checked

A published vendor fix does not prove that a matching update is enabled and installable on a particular asset. Confirm the local package candidate before scheduling remediation.

Distribution releaseSource packageVendor stateFixed versionEvidence
Debian trixietrixie · sourcenettyVendor fix publishedDebian records a fixed source-package version for this release.1:4.1.48-4Debian Security Tracker ↗Source updated 6 Oct 2026
Debian bookwormbookworm · sourcenettyVendor fix publishedDebian records a fixed source-package version for this release.1:4.1.48-4Debian Security Tracker ↗Source updated 6 Oct 2026
Debian forkyforky · sourcenettyVendor fix publishedDebian records a fixed source-package version for this release.1:4.1.48-4Debian Security Tracker ↗Source updated 6 Oct 2026
Debian sidsid · sourcenettyVendor fix publishedDebian records a fixed source-package version for this release.1:4.1.48-4Debian Security Tracker ↗Source updated 6 Oct 2026
Open-source package ranges3 source-attributed ranges

These OSV and GitHub advisory ranges apply only to the named package and ecosystem. A listed fixed version is not a universal product patch or proof that an update is installed.

Ecosystem and packageAffected rangeFirst fixed versionEvidence
Mavenio.netty:nettyECOSYSTEM: introduced 0Not statedOSV record ↗aggregator derived · 10 Sep 2026
Mavenio.netty:netty-codec-http2ECOSYSTEM: introduced 4.0.0; fixed 4.1.61.Final4.1.61.FinalOSV record ↗aggregator derived · 10 Sep 2026
Mavenorg.jboss.netty:nettyECOSYSTEM: introduced 0Not statedOSV record ↗aggregator derived · 10 Sep 2026
Direct vendor intelligence

Authoritative vendor CSAF and VEX advisories

Structured product status and remediation from the issuing vendor. Product-state explanations are always visible; large lists can be searched or downloaded.

1 current
CVE-2021-21409 · CSAF 2.0 · revision 3 · finalRed Hat Product Securitynetty: Request smuggling via content-length header
19 known affected

The vendor explicitly identifies these products as affected by this CVE.

  • netty as a component of Red Hat A-MQ Online
  • netty as a component of Red Hat build of Quarkus
  • netty as a component of Red Hat JBoss A-MQ 6
  • netty as a component of Red Hat JBoss Data Grid 7
  • netty as a component of Red Hat JBoss Enterprise Application Platform 5
  • netty as a component of Red Hat JBoss Enterprise Application Platform 6
  • netty as a component of Red Hat JBoss Enterprise Application Platform Expansion Pack
  • netty as a component of Red Hat JBoss Fuse 6
  • netty as a component of Red Hat JBoss Operations Network 3
  • netty as a component of Red Hat OpenShift Application Runtimes
  • openshift3/ose-logging-elasticsearch5 as a component of Red Hat OpenShift Container Platform 3.11
  • openshift4/ose-logging-elasticsearch5 as a component of Red Hat OpenShift Container Platform 4
Summary
A flaw was found in Netty. There is an issue where the content-length header is not validated correctly if the request uses a single Http2HeaderFrame with the endstream set to true. This flaw leads to request smuggling if the request is proxied to a remote peer and translated to HTTP/1.1. The highest threat from this vulnerability is to integrity.
Remediation
Before applying this update, back up your existing Red Hat JBoss Enterprise Application Platform installation and deployed applications. For details on how to apply this update, which includes the changes described in this advisory, refer to: https://access.redhat.com/articles/11258
Optional official sources

National CERT insights
?CERT means Computer Emergency Response Team; CSIRT is the closely related term Computer Security Incident Response Team.

Choose official national sources for this report. Each advisory shows its original language. Your selection is remembered on this device and included in shared links.

Official European source

ENISA European Vulnerability Database

Official EUVD identifiers, advisory evidence and known-exploited context. Missing fields are not treated as evidence of low risk.

1 current
ENISA EUVD identifier

EUVD-2021-0647

No EUVD known-exploited evidence

ENISA has published the identifier mapping but no EUVD description has been stored yet.

EUVD state
Present in the current official mapping
Known exploitation
Not present in the current ENISA EUVD known-exploited dataset. This is not proof of no exploitation.
ENISA score
Not supplied in the stored EUVD record
Advisory evidence
No linked advisory details stored yet
Recommended actionScheduled

Medium technical severity with no CISA KEV confirmation; remediate through the normal risk-based patch cycle unless local exposure raises the priority.

Patch available
01

What, why and how

Netty is an open-source, asynchronous event-driven network application framework for rapid development of maintainable high performance protocol servers & clients. In Netty (io.netty:netty-codec-http2) before version 4.1.61.Final there is a vulnerability that enables request smuggling. The content-length header is not correctly validated if the request only uses a single Http2HeaderFrame with the endStream set to to true. This could lead to request smuggling if the request is proxied to a remote peer and translated to HTTP/1.1. This is a followup of GHSA-wm47-8v5p-wjpj/CVE-2021-21295 which did miss to fix this one case. This was fixed as part of 4.1.61.Final.

What

Netty is an open-source, asynchronous event-driven network application framework for rapid development of maintainable high performance protocol servers & clients. In Netty (io.netty:netty-codec-http2) before version 4.1.61.Final there is a vulnerability that enables request smuggling. The content-length header is not correctly validated if the request only uses a single Http2HeaderFrame with the endStream set to to true. This could lead to request smuggling if the request is proxied to a remote peer and translated to HTTP/1.1. This is a followup of GHSA-wm47-8v5p-wjpj/CVE-2021-21295 which did miss to fix this one case. This was fixed as part of 4.1.61.Final.

Why

The product acts as an intermediary HTTP agent (such as a proxy or firewall) in the data flow between two entities such as a client and server, but it does not interpret malformed HTTP requests or responses in ways that are consistent with how the messages will be processed by those entities that are at the ultimate destination.

How

An attacker operating through a network path may attempt exploitation without authentication or user interaction. If successful, the issue may cause the confidentiality, integrity or availability impact described by the vendor.

What

Netty is an open-source, asynchronous event-driven network application framework for rapid development of maintainable high performance protocol servers & clients. In Netty (io.netty:netty-codec-http2) before version 4.1.61.Final there is a vulnerability that enables request smuggling. The content-length header is not correctly validated if the request only uses a single Http2HeaderFrame with the endStream set to to true. This could lead to request smuggling if the request is proxied to a remote peer and translated to HTTP/1.1. This is a followup of GHSA-wm47-8v5p-wjpj/CVE-2021-21295 which did miss to fix this one case. This was fixed as part of 4.1.61.Final.

Why

The product acts as an intermediary HTTP agent (such as a proxy or firewall) in the data flow between two entities such as a client and server, but it does not interpret malformed HTTP requests or responses in ways that are consistent with how the messages will be processed by those entities that are at the ultimate destination.

How

An attacker operating through a network path may attempt exploitation without authentication or user interaction. If successful, the issue may cause the confidentiality, integrity or availability impact described by the vendor.

02

Exploit reality and attack path

CVSS severity, EPSS forecast probability, public exploit material and CISA-confirmed exploitation are separate signals.

Observed exploitation
?Confirmed exploitation and public exploit material are separate signals. Attacks can occur without public proof-of-concept or exploit code.
No confirmed evidence

No CISA KEV match was present at the last successful refresh. This means no confirmation from that source, not proof of no exploitation.

Public PoC / exploit material
?Confirmed exploitation and public exploit material are separate signals. Attacks can occur without public proof-of-concept or exploit code.
None recorded

No exploit-tagged reference or CISA SSVC proof-of-concept state is currently recorded. Research may still exist outside the structured feeds.

Likely attack path
a network path → Inconsistent Interpretation of HTTP Requests ('HTTP Request/Response Smuggling') → cause the confidentiality, integrity or availability impact described by the vendor
Attack surface
Network
Privileges required
None: unauthenticated exploitation is possible
User interaction
None
Attack complexity
High: exploitation depends on specific conditions
Security boundary
Unchanged: impact remains within the vulnerable component's security authority
Weakness
?CWE means Common Weakness Enumeration: a standard category for the underlying weakness.
CWE-444 ↗

CWE-444: Inconsistent Interpretation of HTTP Requests ('HTTP Request/Response Smuggling'). The product acts as an intermediary HTTP agent (such as a proxy or firewall) in the data flow between two entities such as a client and server, but it does not interpret malformed HTTP requests or responses in ways that are consistent with how the messages will be processed by those entities that are at the ultimate destination.

CVSS vector
?CVSS means Common Vulnerability Scoring System. The vector records the metric values used to calculate technical severity.
CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:N/I:H/A:N

Common Vulnerability Scoring System 3.1: the compact vector below is decoded into plain language.

AVNetworkAttack vector: The vulnerable component can be reached over a network.ACHighAttack complexity: Successful exploitation depends on specific conditions outside the attacker's direct control.PRNonePrivileges required: The attacker does not need an account or existing privileges.UINoneUser interaction: No action by another user is required.SUnchangedScope: The security impact remains within the vulnerable component's authority.CNoneConfidentiality impact: No direct loss is represented by this metric.IHighIntegrity impact: A successful attack can cause a major loss.ANoneAvailability impact: No direct loss is represented by this metric.
Post-exploitation / living off the land
No specific living-off-the-land technique is confirmed in the structured sources. Monitor normal administration tools for activity inconsistent with the affected service's baseline.
NetworkUnauthenticatedCWE-444
A

Official authority intelligence

Only matched European and national findings are included. Language selectors and unavailable sources are omitted.

BSI · German · WID-SEC-2025-1459Dell Data Protection Advisor: Mehrere Schwachstellen

Ein Angreifer kann mehrere Schwachstellen in Dell Data Protection Advisor ausnutzen, um beliebigen Programmcode auszuführen, um einen Denial of Service Angriff durchzuführen, und um weitere nicht näher spezifizierte Angriffe durchzuführen.

Official advisory ↗
BSI · German · WID-SEC-2024-0794Dell ECS: Mehrere Schwachstellen

Ein Angreifer kann mehrere Schwachstellen in Dell ECS ausnutzen, um seine Privilegien zu erweitern, beliebigen Programmcode mit Administratorrechten auszuführen, Informationen offenzulegen, Dateien zu manipulieren, einen Cross-Site-Scripting-Angriff durchzuführen, Sicherheitsvorkehrungen zu umgehen oder einen Denial of Service Zustand herbeizuführen.

Official advisory ↗
BSI · German · WID-SEC-2023-0809IBM QRadar SIEM: Mehrere Schwachstellen

Ein entfernter, anonymer Angreifer kann mehrere Schwachstellen in IBM QRadar SIEM ausnutzen, um beliebigen Programmcode auszuführen, Informationen offenzulegen, Informationen falsch darzustellen, einen Denial of Service Zustand herbeizuführen, Sicherheitsvorkehrungen zu umgehen, einen Cross-Site-Scripting-Angriff durchzuführen oder unbekannte Auswirkungen zu verursachen.

Official advisory ↗
Cyber Security Agency of Singapore · English · CSA-SB-20210331Security Bulletin 31 Mar 2021

The Cyber Security Agency of Singapore included this CVE in its official Security Bulletin 31 Mar 2021, published on 31 March 2021. Open the linked bulletin for the product, severity and reference information published in that issue.

Official advisory ↗
CERT-FR · French · CERTFR-2026-AVI-1165Multiples vulnérabilités dans les produits IBM

ERecord?id=CVE-2020-11988 Référence CVE CVE-2020-13955 https://www.cve.org/CVERecord?id=CVE-2020-13955 Référence CVE CVE-2020-26555 https://www.cve.org/CVERecord?id=CVE-2020-26555 Référence CVE CVE-2020-26945 https://www.cve.org/CVERecord?id=CVE-2020-26945 Référence CVE CVE-2020-7656 https://www.cve.org/CVERecord?id=CVE-2020-7656 Référence CVE CVE-2020-9480 https://www.cve.org/CVERecord?id=CVE-2020-9480 Référence CVE CVE-2020-9492 https://www.cve.org/CVERecord?id=CVE-2020-9492 Référence CVE CVE-2021-21290 https://www.cve.org/CVERecord?id=CVE-2021-21290 Référence CVE CVE-2021-21295 https://www.cve.org/CVERecord?id=CVE-2021-21295 Référence CVE CVE-2021-21409 https://www.cve.org/CVERecord?id=CVE-2021-21409 Référence CVE CVE-2021-22569 https://www.cve.org/CVERecord?id=CVE-2021-22569 Référence CVE CVE-2021-22570 https://www.cve.org/CVERecord?id=CVE-2021-22570 Référence CVE CVE-2021-23337 https://www.cve.org/CVERecord?id=CVE-2021-23337 Référence CVE CVE-2021-23369 https://www.cve.org/CVERecord?id=CVE-2021-23369 Référence CVE CVE-2021-27568 https://www.cve.org/CVERecord?id=CVE-2021-27568 Référence CVE CVE-2021-31684 https://www.cve.org/CVERecord?id=CVE-2021-31684 Référence CVE CVE-2021-33036 https://www.cve.org/CVERecord?id=CVE-2021-33036 Référence CVE CVE-2021-35515 https://www.cve.org/CVERecord?id=

Official advisory ↗
CERT-FR · French · CERTFR-2026-AVI-0500Multiples vulnérabilités dans VMware Tanzu

rg/CVERecord?id=CVE-2020-8840 Référence CVE CVE-2020-8908 https://www.cve.org/CVERecord?id=CVE-2020-8908 Référence CVE CVE-2020-9546 https://www.cve.org/CVERecord?id=CVE-2020-9546 Référence CVE CVE-2020-9547 https://www.cve.org/CVERecord?id=CVE-2020-9547 Référence CVE CVE-2020-9548 https://www.cve.org/CVERecord?id=CVE-2020-9548 Référence CVE CVE-2021-0341 https://www.cve.org/CVERecord?id=CVE-2021-0341 Référence CVE CVE-2021-20190 https://www.cve.org/CVERecord?id=CVE-2021-20190 Référence CVE CVE-2021-21290 https://www.cve.org/CVERecord?id=CVE-2021-21290 Référence CVE CVE-2021-21295 https://www.cve.org/CVERecord?id=CVE-2021-21295 Référence CVE CVE-2021-21409 https://www.cve.org/CVERecord?id=CVE-2021-21409 Référence CVE CVE-2021-22569 https://www.cve.org/CVERecord?id=CVE-2021-22569 Référence CVE CVE-2021-22573 https://www.cve.org/CVERecord?id=CVE-2021-22573 Référence CVE CVE-2021-31684 https://www.cve.org/CVERecord?id=CVE-2021-31684 Référence CVE CVE-2021-37137 https://www.cve.org/CVERecord?id=CVE-2021-37137 Référence CVE CVE-2021-43797 https://www.cve.org/CVERecord?id=CVE-2021-43797 Référence CVE CVE-2022-1471 https://www.cve.org/CVERecord?id=CVE-2022-1471 Référence CVE CVE-2022-25857 https://www.cve.org/CVERecord?id=CVE-2022-25857 Référence CVE CVE-2022-25883 https://www.cve.org/CVERecord?id=CV

Official advisory ↗
CERT-FR · French · CERTFR-2025-AVI-0661Multiples vulnérabilités dans les produits Splunk

ord?id=CVE-2019-20444 Référence CVE CVE-2019-20445 https://www.cve.org/CVERecord?id=CVE-2019-20445 Référence CVE CVE-2019-9674 https://www.cve.org/CVERecord?id=CVE-2019-9674 Référence CVE CVE-2020-10650 https://www.cve.org/CVERecord?id=CVE-2020-10650 Référence CVE CVE-2020-36189 https://www.cve.org/CVERecord?id=CVE-2020-36189 Référence CVE CVE-2020-36518 https://www.cve.org/CVERecord?id=CVE-2020-36518 Référence CVE CVE-2021-20190 https://www.cve.org/CVERecord?id=CVE-2021-20190 Référence CVE CVE-2021-21290 https://www.cve.org/CVERecord?id=CVE-2021-21290 Référence CVE CVE-2021-21295 https://www.cve.org/CVERecord?id=CVE-2021-21295 Référence CVE CVE-2021-21409 https://www.cve.org/CVERecord?id=CVE-2021-21409 Référence CVE CVE-2021-23413 https://www.cve.org/CVERecord?id=CVE-2021-23413 Référence CVE CVE-2021-37136 https://www.cve.org/CVERecord?id=CVE-2021-37136 Référence CVE CVE-2021-37137 https://www.cve.org/CVERecord?id=CVE-2021-37137 Référence CVE CVE-2021-4189 https://www.cve.org/CVERecord?id=CVE-2021-4189 Référence CVE CVE-2021-42550 https://www.cve.org/CVERecord?id=CVE-2021-42550 Référence CVE CVE-2021-43797 https://www.cve.org/CVERecord?id=CVE-2021-43797 Référence CVE CVE-2022-0391 https://www.cve.org/CVERecord?id=CVE-2022-0391 Référence CVE CVE-2022-24823 https://www.cve.org/CVERecord?id=CVE-

Official advisory ↗
CERT-FR · French · CERTFR-2025-AVI-0106Multiples vulnérabilités dans les produits IBM

/CVERecord?id=CVE-2019-9021 Référence CVE CVE-2019-9023 https://www.cve.org/CVERecord?id=CVE-2019-9023 Référence CVE CVE-2019-9638 https://www.cve.org/CVERecord?id=CVE-2019-9638 Référence CVE CVE-2019-9639 https://www.cve.org/CVERecord?id=CVE-2019-9639 Référence CVE CVE-2019-9641 https://www.cve.org/CVERecord?id=CVE-2019-9641 Référence CVE CVE-2020-20703 https://www.cve.org/CVERecord?id=CVE-2020-20703 Référence CVE CVE-2020-21469 https://www.cve.org/CVERecord?id=CVE-2020-21469 Référence CVE CVE-2021-21290 https://www.cve.org/CVERecord?id=CVE-2021-21290 Référence CVE CVE-2021-21295 https://www.cve.org/CVERecord?id=CVE-2021-21295 Référence CVE CVE-2021-21409 https://www.cve.org/CVERecord?id=CVE-2021-21409 Référence CVE CVE-2021-37136 https://www.cve.org/CVERecord?id=CVE-2021-37136 Référence CVE CVE-2021-37137 https://www.cve.org/CVERecord?id=CVE-2021-37137 Référence CVE CVE-2021-43797 https://www.cve.org/CVERecord?id=CVE-2021-43797 Référence CVE CVE-2021-47366 https://www.cve.org/CVERecord?id=CVE-2021-47366 Référence CVE CVE-2022-21426 https://www.cve.org/CVERecord?id=CVE-2022-21426 Référence CVE CVE-2022-21434 https://www.cve.org/CVERecord?id=CVE-2022-21434 Référence CVE CVE-2022-21476 https://www.cve.org/CVERecord?id=CVE-2022-21476 Référence CVE CVE-2022-21540 https://www.cve.org/CVERecord?id=

Official advisory ↗
CERT-FR · French · CERTFR-2024-AVI-0031Multiples vulnérabilités dans les produits IBM

ecord?id=CVE-2018-17196 Référence CVE CVE-2019-16869 https://www.cve.org/CVERecord?id=CVE-2019-16869 Référence CVE CVE-2019-20444 https://www.cve.org/CVERecord?id=CVE-2019-20444 Référence CVE CVE-2019-20445 https://www.cve.org/CVERecord?id=CVE-2019-20445 Référence CVE CVE-2019-9518 https://www.cve.org/CVERecord?id=CVE-2019-9518 Référence CVE CVE-2020-11612 https://www.cve.org/CVERecord?id=CVE-2020-11612 Référence CVE CVE-2020-7238 https://www.cve.org/CVERecord?id=CVE-2020-7238 Référence CVE CVE-2021-21290 https://www.cve.org/CVERecord?id=CVE-2021-21290 Référence CVE CVE-2021-21295 https://www.cve.org/CVERecord?id=CVE-2021-21295 Référence CVE CVE-2021-21409 https://www.cve.org/CVERecord?id=CVE-2021-21409 Référence CVE CVE-2021-25741 https://www.cve.org/CVERecord?id=CVE-2021-25741 Référence CVE CVE-2021-37136 https://www.cve.org/CVERecord?id=CVE-2021-37136 Référence CVE CVE-2021-37137 https://www.cve.org/CVERecord?id=CVE-2021-37137 Référence CVE CVE-2021-38153 https://www.cve.org/CVERecord?id=CVE-2021-38153 Référence CVE CVE-2021-43797 https://www.cve.org/CVERecord?id=CVE-2021-43797 Référence CVE CVE-2023-22036 https://www.cve.org/CVERecord?id=CVE-2023-22036 Référence CVE CVE-2023-22049 https://www.cve.org/CVERecord?id=CVE-2023-22049 Référence CVE CVE-2023-36478 https://www.cve.org/CVERecord?id=

Official advisory ↗
CERT-FR · French · CERTFR-2023-AVI-0276Multiples vulnérabilités dans les produits IBM

VERecord?id=CVE-2019-6284 Référence CVE CVE-2019-6286 https://www.cve.org/CVERecord?id=CVE-2019-6286 Référence CVE CVE-2020-13936 https://www.cve.org/CVERecord?id=CVE-2020-13936 Référence CVE CVE-2020-15366 https://www.cve.org/CVERecord?id=CVE-2020-15366 Référence CVE CVE-2020-24025 https://www.cve.org/CVERecord?id=CVE-2020-24025 Référence CVE CVE-2020-5259 https://www.cve.org/CVERecord?id=CVE-2020-5259 Référence CVE CVE-2020-7764 https://www.cve.org/CVERecord?id=CVE-2020-7764 Référence CVE CVE-2021-21290 https://www.cve.org/CVERecord?id=CVE-2021-21290 Référence CVE CVE-2021-21295 https://www.cve.org/CVERecord?id=CVE-2021-21295 Référence CVE CVE-2021-21409 https://www.cve.org/CVERecord?id=CVE-2021-21409 Référence CVE CVE-2021-23343 https://www.cve.org/CVERecord?id=CVE-2021-23343 Référence CVE CVE-2021-23362 https://www.cve.org/CVERecord?id=CVE-2021-23362 Référence CVE CVE-2021-23364 https://www.cve.org/CVERecord?id=CVE-2021-23364 Référence CVE CVE-2021-23368 https://www.cve.org/CVERecord?id=CVE-2021-23368 Référence CVE CVE-2021-23382 https://www.cve.org/CVERecord?id=CVE-2021-23382 Référence CVE CVE-2021-23450 https://www.cve.org/CVERecord?id=CVE-2021-23450 Référence CVE CVE-2021-25220 https://www.cve.org/CVERecord?id=CVE-2021-25220 Référence CVE CVE-2021-26401 https://www.cve.org/CVERecord?id=

Official advisory ↗
CERT-FR · French · CERTFR-2021-AVI-951Multiples vulnérabilités dans le noyau Linux de RedHat

d?id=CVE-2021-21343 Référence CVE CVE-2021-21344 https://www.cve.org/CVERecord?id=CVE-2021-21344 Référence CVE CVE-2021-21345 https://www.cve.org/CVERecord?id=CVE-2021-21345 Référence CVE CVE-2021-21346 https://www.cve.org/CVERecord?id=CVE-2021-21346 Référence CVE CVE-2021-21347 https://www.cve.org/CVERecord?id=CVE-2021-21347 Référence CVE CVE-2021-21348 https://www.cve.org/CVERecord?id=CVE-2021-21348 Référence CVE CVE-2021-21349 https://www.cve.org/CVERecord?id=CVE-2021-21349 Référence CVE CVE-2021-21350 https://www.cve.org/CVERecord?id=CVE-2021-21350 Référence CVE CVE-2021-21351 https://www.cve.org/CVERecord?id=CVE-2021-21351 Référence CVE CVE-2021-21409 https://www.cve.org/CVERecord?id=CVE-2021-21409 Référence CVE CVE-2021-22118 https://www.cve.org/CVERecord?id=CVE-2021-22118 Référence CVE CVE-2021-22696 https://www.cve.org/CVERecord?id=CVE-2021-22696 Référence CVE CVE-2021-23926 https://www.cve.org/CVERecord?id=CVE-2021-23926 Référence CVE CVE-2021-27568 https://www.cve.org/CVERecord?id=CVE-2021-27568 Référence CVE CVE-2021-28163 https://www.cve.org/CVERecord?id=CVE-2021-28163 Référence CVE CVE-2021-28164 https://www.cve.org/CVERecord?id=CVE-2021-28164 Référence CVE CVE-2021-28169 https://www.cve.org/CVERecord?id=CVE-2021-28169 Référence CVE CVE-2021-28170 https://www.cve.org/CVERecord?id=

Official advisory ↗
CERT-FR · French · CERTFR-2021-AVI-474Multiples vulnérabilités dans les produits IBM

De multiples vulnérabilités ont été découvertes dans les produits IBM. Certaines d'entre elles permettent à un attaquant de provoquer une exécution de code arbitraire, une atteinte à l'intégrité des données et une atteinte à la confidentialité des données.

Official advisory ↗
CERT-FR · French · CERTFR-2021-AVI-407Multiples vulnérabilités dans le noyau Linux de Red Hat

d?id=CVE-2021-21343 Référence CVE CVE-2021-21344 https://www.cve.org/CVERecord?id=CVE-2021-21344 Référence CVE CVE-2021-21345 https://www.cve.org/CVERecord?id=CVE-2021-21345 Référence CVE CVE-2021-21346 https://www.cve.org/CVERecord?id=CVE-2021-21346 Référence CVE CVE-2021-21347 https://www.cve.org/CVERecord?id=CVE-2021-21347 Référence CVE CVE-2021-21348 https://www.cve.org/CVERecord?id=CVE-2021-21348 Référence CVE CVE-2021-21349 https://www.cve.org/CVERecord?id=CVE-2021-21349 Référence CVE CVE-2021-21350 https://www.cve.org/CVERecord?id=CVE-2021-21350 Référence CVE CVE-2021-21351 https://www.cve.org/CVERecord?id=CVE-2021-21351 Référence CVE CVE-2021-21409 https://www.cve.org/CVERecord?id=CVE-2021-21409 Référence CVE CVE-2021-31917 https://www.cve.org/CVERecord?id=CVE-2021-31917 Référence CVE CVE-2021-3347 https://www.cve.org/CVERecord?id=CVE-2021-3347 Gestion détaillée du document le 27 mai 2021 Version initiale Alertes Avis Bulletins d’actualités Mentions légales Conditions générales À propos Contact cyber.gouv.fr service-public.fr legifrance.gouv.fr info.gouv.fr france.fr info.gouv.fr/risques Premier Ministre / Secrétariat Général de la Défense et de la Sécurité Nationale / Agence nationale de la sécurité des systèmes d'information

Official advisory ↗
JVN iPedia · Japanese · JVNDB-2022-008162レッドハットの origin-aggregated-logging における HTTP リクエストスマグリングに関する脆弱性

レッドハットの origin-aggregated-logging には、HTTP リクエストスマグリングに関する脆弱性が存在します。

Official advisory ↗
JVN iPedia · Japanese · JVNDB-2021-005193Netty における HTTP リクエストスマグリングに関する脆弱性

Netty には、HTTP リクエストスマグリングに関する脆弱性が存在します。 本脆弱性は、CVE-2021-21295 に対する修正が不完全だったことに起因する脆弱性です。

Official advisory ↗
03

Patch and workaround

Operational remediation based on structured source evidence.

Status
?Patch availability is based on structured fixed-version fields and authoritative update references. If no fix is verified, check the vendor advisory before making a change.
Patch available
Affected
Fixed
Action
Before applying this update, back up your existing Red Hat JBoss Enterprise Application Platform installation and deployed applications. For details on how to apply this update, which includes the changes described in this advisory, refer to: https://access.redhat.com/articles/11258
Workaround
No verified workaround is recorded. If business-safe, reduce exposure to the affected interface and allow only trusted sources until authoritative guidance is available.
04

Evidence and provenance

Published 30 Mar 2021 · Last source change 3 Aug 2024, 18:09 UTC · CWE-444 · Inconsistent Interpretation of HTTP Requests ('HTTP Request/Response Smuggling')

CVE recordCVE.org · 5.1
CVSS sourceCNA
EPSS source
?The date BlackTree first stored a score for this CVE from the daily FIRST EPSS feed.
FIRST · tracked since 2026-08-14
European sourceENISA EUVD · EUVD-2021-0647
Product sourceVendor CSAF · Red Hat Product Security
Remediation sourceVendor CSAF · Red Hat Product Security
CWE sourceCNA
NVD statusNVD modified after enrichment

Core structured fields are present and their contributing authorities are shown above.

Material change intelligence

What changed after publication

View recent updates ↗
  1. Affected versionsThe structured affected or fixed version information changed.
    Before
    < 4.1.61.Final · Fixed: An authoritative update reference is available, but the fixed version is not recorded in the structured CVE fields. Check the linked vendor advisory for the applicable release.
    After
    < 4.1.61.Final · Fixed: Before applying this update, back up your existing Red Hat JBoss Enterprise Application Platform installation and deployed applications. For details on how to apply this update, which includes the changes described in this advisory, refer to: https://access.redhat.com/articles/11258
    Red Hat Product Security ↗
  2. Affected versionsThe structured affected or fixed version information changed.
    Before
    netty as a component of Red Hat A-MQ Online; netty as a component of Red Hat build of Quarkus; netty as a component of Red Hat JBoss A-MQ 6; netty as a component of Red Hat JBoss Data Grid 7; netty as a component of Red Hat JBoss Enterprise Application Platform 5; netty as a component of Red Hat JBoss Enterprise Application Platform 6; netty as a component of Red Hat JBoss Fuse 6; netty as a component of Red Hat JBoss Operations Network 3; netty as a component of Red Hat OpenShift Application Runtimes; openshift3/ose-logging-elasticsearch5 as a component of Red Hat OpenShift Container Platform 3.11; openshift4/ose-logging-elasticsearch5 as a component of Red Hat OpenShift Container Platform 4; openshift4/ose-logging-elasticsearch6 as a component of Red Hat OpenShift Container Platform 4; openshift4/ose-metering-hadoop as a component of Red Hat OpenShift Container Platform 4; openshift4/ose-metering-hive as a component of Red Hat OpenShift Container Platform 4; openshift4/ose-metering-presto as a component of Red Hat OpenShift Container Platform 4; opendaylight.src as a component of Red Hat OpenStack Platform 10 (Newton); opendaylight as a component of Red Hat OpenStack Platform 13 (Queens); opendaylight.src as a component of Red Hat OpenStack Platform 13 (Queens) · Fixed: eap7-elytron-web-0:1.6.3-1.Final_redhat_00001.1.el6eap.src as a component of Red Hat JBoss EAP 7.3 for RHEL 6 Server; eap7-hal-console-0:3.2.15-1.Final_redhat_00001.1.el6eap.noarch as a component of Red Hat JBoss EAP 7.3 for RHEL 6 Server; eap7-hal-console-0:3.2.15-1.Final_redhat_00001.1.el6eap.src as a component of Red Hat JBoss EAP 7.3 for RHEL 6 Server; eap7-hibernate-0:5.3.20-3.SP1_redhat_00001.1.el6eap.noarch as a component of Red Hat JBoss EAP 7.3 for RHEL 6 Server; eap7-hibernate-0:5.3.20-3.SP1_redhat_00001.1.el6eap.src as a component of Red Hat JBoss EAP 7.3 for RHEL 6 Server; eap7-hibernate-core-0:5.3.20-3.SP1_redhat_00001.1.el6eap.noarch as a component of Red Hat JBoss EAP 7.3 for RHEL 6 Server; eap7-hibernate-entitymanager-0:5.3.20-3.SP1_redhat_00001.1.el6eap.noarch as a component of Red Hat JBoss EAP 7.3 for RHEL 6 Server; eap7-hibernate-envers-0:5.3.20-3.SP1_redhat_00001.1.el6eap.noarch as a component of Red Hat JBoss EAP 7.3 for RHEL 6 Server; eap7-hibernate-java8-0:5.3.20-3.SP1_redhat_00001.1.el6eap.noarch as a component of Red Hat JBoss EAP 7.3 for RHEL 6 Server; eap7-infinispan-0:9.4.23-1.Final_redhat_00001.1.el6eap.noarch as a component of Red Hat JBoss EAP 7.3 for RHEL 6 Server; eap7-infinispan-0:9.4.23-1.Final_redhat_00001.1.el6eap.src as a component of Red Hat JBoss EAP 7.3 for RHEL 6 Server; eap7-infinispan-cachestore-jdbc-0:9.4.23-1.Final_redhat_00001.1.el6eap.noarch as a component of Red Hat JBoss EAP 7.3 for RHEL 6 Server; eap7-infinispan-cachestore-remote-0:9.4.23-1.Final_redhat_00001.1.el6eap.noarch as a component of Red Hat JBoss EAP 7.3 for RHEL 6 Server; eap7-infinispan-client-hotrod-0:9.4.23-1.Final_redhat_00001.1.el6eap.noarch as a component of Red Hat JBoss EAP 7.3 for RHEL 6 Server; eap7-infinispan-commons-0:9.4.23-1.Final_redhat_00001.1.el6eap.noarch as a component of Red Hat JBoss EAP 7.3 for RHEL 6 Server; eap7-infinispan-core-0:9.4.23-1.Final_redhat_00001.1.el6eap.noarch as a component of Red Hat JBoss EAP 7.3 for RHEL 6 Server; eap7-infinispan-hibernate-cache-commons-0:9.4.23-1.Final_redhat_00001.1.el6eap.noarch as a component of Red Hat JBoss EAP 7.3 for RHEL 6 Server; eap7-infinispan-hibernate-cache-spi-0:9.4.23-1.Final_redhat_00001.1.el6eap.noarch as a component of Red Hat JBoss EAP 7.3 for RHEL 6 Server; eap7-infinispan-hibernate-cache-v53-0:9.4.23-1.Final_redhat_00001.1.el6eap.noarch as a component of Red Hat JBoss EAP 7.3 for RHEL 6 Server; eap7-ironjacamar-0:1.4.33-1.Final_redhat_00001.1.el6eap.noarch as a component of Red Hat JBoss EAP 7.3 for RHEL 6 Server; eap7-ironjacamar-0:1.4.33-1.Final_redhat_00001.1.el6eap.src as a component of Red Hat JBoss EAP 7.3 for RHEL 6 Server; eap7-ironjacamar-common-api-0:1.4.33-1.Final_redhat_00001.1.el6eap.noarch as a component of Red Hat JBoss EAP 7.3 for RHEL 6 Server; eap7-ironjacamar-common-impl-0:1.4.33-1.Final_redhat_00001.1.el6eap.noarch as a component of Red Hat JBoss EAP 7.3 for RHEL 6 Server; eap7-ironjacamar-common-spi-0:1.4.33-1.Final_redhat_00001.1.el6eap.noarch as a component of Red Hat JBoss EAP 7.3 for RHEL 6 Server; eap7-ironjacamar-core-api-0:1.4.33-1.Final_redhat_00001.1.el6eap.noarch as a component of Red Hat JBoss EAP 7.3 for RHEL 6 Server; eap7-ironjacamar-core-impl-0:1.4.33-1.Final_redhat_00001.1.el6eap.noarch as a component of Red Hat JBoss EAP 7.3 for RHEL 6 Server; eap7-ironjacamar-deployers-common-0:1.4.33-1.Final_redhat_00001.1.el6eap.noarch as a component of Red Hat JBoss EAP 7.3 for RHEL 6 Server; eap7-ironjacamar-jdbc-0:1.4.33-1.Final_redhat_00001.1.el6eap.noarch as a component of Red Hat JBoss EAP 7.3 for RHEL 6 Server; eap7-ironjacamar-validator-0:1.4.33-1.Final_redhat_00001.1.el6eap.noarch as a component of Red Hat JBoss EAP 7.3 for RHEL 6 Server; eap7-jberet-0:1.3.8-1.Final_redhat_00001.1.el6eap.noarch as a component of Red Hat JBoss EAP 7.3 for RHEL 6 Server; and 256 more
    After
    netty as a component of Red Hat A-MQ Online; netty as a component of Red Hat build of Quarkus; netty as a component of Red Hat JBoss A-MQ 6; netty as a component of Red Hat JBoss Data Grid 7; netty as a component of Red Hat JBoss Enterprise Application Platform 5; netty as a component of Red Hat JBoss Enterprise Application Platform 6; netty as a component of Red Hat JBoss Enterprise Application Platform Expansion Pack; netty as a component of Red Hat JBoss Fuse 6; netty as a component of Red Hat JBoss Operations Network 3; netty as a component of Red Hat OpenShift Application Runtimes; openshift3/ose-logging-elasticsearch5 as a component of Red Hat OpenShift Container Platform 3.11; openshift4/ose-logging-elasticsearch5 as a component of Red Hat OpenShift Container Platform 4; openshift4/ose-logging-elasticsearch6 as a component of Red Hat OpenShift Container Platform 4; openshift4/ose-metering-hadoop as a component of Red Hat OpenShift Container Platform 4; openshift4/ose-metering-hive as a component of Red Hat OpenShift Container Platform 4; openshift4/ose-metering-presto as a component of Red Hat OpenShift Container Platform 4; opendaylight.src as a component of Red Hat OpenStack Platform 10 (Newton); opendaylight as a component of Red Hat OpenStack Platform 13 (Queens); opendaylight.src as a component of Red Hat OpenStack Platform 13 (Queens) · Fixed: eap7-elytron-web-0:1.6.3-1.Final_redhat_00001.1.el6eap.src as a component of Red Hat JBoss EAP 7.3 for RHEL 6 Server; eap7-hal-console-0:3.2.15-1.Final_redhat_00001.1.el6eap.noarch as a component of Red Hat JBoss EAP 7.3 for RHEL 6 Server; eap7-hal-console-0:3.2.15-1.Final_redhat_00001.1.el6eap.src as a component of Red Hat JBoss EAP 7.3 for RHEL 6 Server; eap7-hibernate-0:5.3.20-3.SP1_redhat_00001.1.el6eap.noarch as a component of Red Hat JBoss EAP 7.3 for RHEL 6 Server; eap7-hibernate-0:5.3.20-3.SP1_redhat_00001.1.el6eap.src as a component of Red Hat JBoss EAP 7.3 for RHEL 6 Server; eap7-hibernate-core-0:5.3.20-3.SP1_redhat_00001.1.el6eap.noarch as a component of Red Hat JBoss EAP 7.3 for RHEL 6 Server; eap7-hibernate-entitymanager-0:5.3.20-3.SP1_redhat_00001.1.el6eap.noarch as a component of Red Hat JBoss EAP 7.3 for RHEL 6 Server; eap7-hibernate-envers-0:5.3.20-3.SP1_redhat_00001.1.el6eap.noarch as a component of Red Hat JBoss EAP 7.3 for RHEL 6 Server; eap7-hibernate-java8-0:5.3.20-3.SP1_redhat_00001.1.el6eap.noarch as a component of Red Hat JBoss EAP 7.3 for RHEL 6 Server; eap7-infinispan-0:9.4.23-1.Final_redhat_00001.1.el6eap.noarch as a component of Red Hat JBoss EAP 7.3 for RHEL 6 Server; eap7-infinispan-0:9.4.23-1.Final_redhat_00001.1.el6eap.src as a component of Red Hat JBoss EAP 7.3 for RHEL 6 Server; eap7-infinispan-cachestore-jdbc-0:9.4.23-1.Final_redhat_00001.1.el6eap.noarch as a component of Red Hat JBoss EAP 7.3 for RHEL 6 Server; eap7-infinispan-cachestore-remote-0:9.4.23-1.Final_redhat_00001.1.el6eap.noarch as a component of Red Hat JBoss EAP 7.3 for RHEL 6 Server; eap7-infinispan-client-hotrod-0:9.4.23-1.Final_redhat_00001.1.el6eap.noarch as a component of Red Hat JBoss EAP 7.3 for RHEL 6 Server; eap7-infinispan-commons-0:9.4.23-1.Final_redhat_00001.1.el6eap.noarch as a component of Red Hat JBoss EAP 7.3 for RHEL 6 Server; eap7-infinispan-core-0:9.4.23-1.Final_redhat_00001.1.el6eap.noarch as a component of Red Hat JBoss EAP 7.3 for RHEL 6 Server; eap7-infinispan-hibernate-cache-commons-0:9.4.23-1.Final_redhat_00001.1.el6eap.noarch as a component of Red Hat JBoss EAP 7.3 for RHEL 6 Server; eap7-infinispan-hibernate-cache-spi-0:9.4.23-1.Final_redhat_00001.1.el6eap.noarch as a component of Red Hat JBoss EAP 7.3 for RHEL 6 Server; eap7-infinispan-hibernate-cache-v53-0:9.4.23-1.Final_redhat_00001.1.el6eap.noarch as a component of Red Hat JBoss EAP 7.3 for RHEL 6 Server; eap7-ironjacamar-0:1.4.33-1.Final_redhat_00001.1.el6eap.noarch as a component of Red Hat JBoss EAP 7.3 for RHEL 6 Server; eap7-ironjacamar-0:1.4.33-1.Final_redhat_00001.1.el6eap.src as a component of Red Hat JBoss EAP 7.3 for RHEL 6 Server; eap7-ironjacamar-common-api-0:1.4.33-1.Final_redhat_00001.1.el6eap.noarch as a component of Red Hat JBoss EAP 7.3 for RHEL 6 Server; eap7-ironjacamar-common-impl-0:1.4.33-1.Final_redhat_00001.1.el6eap.noarch as a component of Red Hat JBoss EAP 7.3 for RHEL 6 Server; eap7-ironjacamar-common-spi-0:1.4.33-1.Final_redhat_00001.1.el6eap.noarch as a component of Red Hat JBoss EAP 7.3 for RHEL 6 Server; eap7-ironjacamar-core-api-0:1.4.33-1.Final_redhat_00001.1.el6eap.noarch as a component of Red Hat JBoss EAP 7.3 for RHEL 6 Server; eap7-ironjacamar-core-impl-0:1.4.33-1.Final_redhat_00001.1.el6eap.noarch as a component of Red Hat JBoss EAP 7.3 for RHEL 6 Server; eap7-ironjacamar-deployers-common-0:1.4.33-1.Final_redhat_00001.1.el6eap.noarch as a component of Red Hat JBoss EAP 7.3 for RHEL 6 Server; eap7-ironjacamar-jdbc-0:1.4.33-1.Final_redhat_00001.1.el6eap.noarch as a component of Red Hat JBoss EAP 7.3 for RHEL 6 Server; eap7-ironjacamar-validator-0:1.4.33-1.Final_redhat_00001.1.el6eap.noarch as a component of Red Hat JBoss EAP 7.3 for RHEL 6 Server; eap7-jberet-0:1.3.8-1.Final_redhat_00001.1.el6eap.noarch as a component of Red Hat JBoss EAP 7.3 for RHEL 6 Server; and 256 more
    Red Hat Product Security ↗
Material fields only · duplicate refreshes suppressed · history retained for the configured operational retention period
CVE published
Fixed release or patch reference recorded
Fixed release recorded from official guidance
ENISA EUVD · EUVD-2021-0647↗Red Hat Product Security security advisory↗Patch or update reference↗Patch or update reference↗Patch or update reference↗Patch or update reference↗CVE authority or vendor reference · GitHub GHSA-F256-J965-7F32↗Official CVE record (CNA and ADP data)↗NVD record↗
Technical terms and abbreviations used in this report
CVE
Common Vulnerabilities and Exposures: the public identifier for one disclosed vulnerability.
CVSS
Common Vulnerability Scoring System: a technical severity framework; it is not patching priority by itself.
EPSS
Exploit Prediction Scoring System: FIRST's estimate of the probability that exploitation activity will be observed in the next 30 days; it is a forecast, not confirmation.
CWE
Common Weakness Enumeration: the standard category describing the underlying software or hardware weakness.
CNA
CVE Numbering Authority: an organisation authorised to assign and publish CVE records.
CISA ADP
Cybersecurity and Infrastructure Security Agency Authorized Data Publisher: structured enrichment added to a CVE record.
NVD
National Vulnerability Database: NIST's enrichment service for CVE records.
CERT / CSIRT
A computer security incident response team that publishes warnings or coordinates incident response.
PoC
Proof of concept: public material that demonstrates or helps reproduce exploitation.
CSAF
Common Security Advisory Framework: a machine-readable format for security advisories.
LoTL
Living off the land: abuse of legitimate tools or system functions during an attack.
Free version - for non-commercial use only.CVE-2021-21409 · cve.blacktree.nl