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Full vulnerability report · 2021
CVE-2020-28491High confidence

Denial of Service (DoS)

n/a · com.fasterxml.jackson.dataformat:jackson-dataformat-cbor

7.5HighCVSS 3.1
Recommended action
Within 7 days

High technical severity; prioritise exposed affected systems while verifying vendor guidance.

Patch available
Distribution package intelligence

Ubuntu vendor package status

Canonical’s release and source-package findings are shown separately from local repository availability.

1 package state
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.

Ubuntu releaseSource packageVendor stateFixed versionEvidence
Ubuntu 24.04 LTSnoble · standard archivejackson-dataformat-cborUnder evaluationCanonical reports that the package might be affected and still needs evaluation or fixing.Not published in this feedCanonical record ↗Source updated 11 Sept 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-2020-28491 · CSAF 2.0 · revision 3 · status not statedRed Hat Product Securityjackson-dataformat-cbor: Unchecked allocation of byte buffer can cause a java.lang.OutOfMemoryError exception
7 known affected

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

  • jackson-dataformat-cbor as a component of Red Hat Integration Camel Quarkus 1
  • jackson-dataformat-cbor 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-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
Summary
This affects the package com.fasterxml.jackson.dataformat:jackson-dataformat-cbor from 0 and before 2.11.4, from 2.12.0-rc1 and before 2.12.1. Unchecked allocation of byte buffer can cause a java.lang.OutOfMemoryError exception.
Remediation
Before applying this update, make sure all previously released errata relevant to your system have been applied. For details on how to apply this update, 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.

Select the national-authority views to include. The exact source language is shown on each matched advisory. Your choice is remembered on this device and encoded in the shareable URL.

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-2021-2611

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 actionWithin 7 days

High technical severity; prioritise exposed affected systems while verifying vendor guidance.

Patch available
01

What, why and how

This affects the package com.fasterxml.jackson.dataformat:jackson-dataformat-cbor from 0 and before 2.11.4, from 2.12.0-rc1 and before 2.12.1. Unchecked allocation of byte buffer can cause a java.lang.OutOfMemoryError exception.

What

This affects the package com.fasterxml.jackson.dataformat:jackson-dataformat-cbor from 0 and before 2.11.4, from 2.12.0-rc1 and before 2.12.1. Unchecked allocation of byte buffer can cause a java.lang.OutOfMemoryError exception.

Why

The product allocates a reusable resource or group of resources on behalf of an actor without imposing any intended restrictions on the size or number of resources that can be allocated.

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

This affects the package com.fasterxml.jackson.dataformat:jackson-dataformat-cbor from 0 and before 2.11.4, from 2.12.0-rc1 and before 2.12.1. Unchecked allocation of byte buffer can cause a java.lang.OutOfMemoryError exception.

Why

The product allocates a reusable resource or group of resources on behalf of an actor without imposing any intended restrictions on the size or number of resources that can be allocated.

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 → Allocation of Resources Without Limits or Throttling → 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
Low: no specialised conditions are recorded
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-770 ↗

CWE-770: Allocation of Resources Without Limits or Throttling. The product allocates a reusable resource or group of resources on behalf of an actor without imposing any intended restrictions on the size or number of resources that can be allocated.

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:L/PR:N/UI:N/S:U/C:N/I:N/A:H

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.ACLowAttack complexity: No specialised conditions are required beyond attacker-controlled input.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.INoneIntegrity impact: No direct loss is represented by this metric.AHighAvailability impact: A successful attack can cause a major loss.
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-770
A

Official authority intelligence

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

CERT-FR · French · CERTFR-2023-AVI-0839Multiples vulnérabilités dans les produits IBM

d?id=CVE-2020-11620 Référence CVE CVE-2020-13956 https://www.cve.org/CVERecord?id=CVE-2020-13956 Référence CVE CVE-2020-14060 https://www.cve.org/CVERecord?id=CVE-2020-14060 Référence CVE CVE-2020-14061 https://www.cve.org/CVERecord?id=CVE-2020-14061 Référence CVE CVE-2020-14062 https://www.cve.org/CVERecord?id=CVE-2020-14062 Référence CVE CVE-2020-14195 https://www.cve.org/CVERecord?id=CVE-2020-14195 Référence CVE CVE-2020-24616 https://www.cve.org/CVERecord?id=CVE-2020-24616 Référence CVE CVE-2020-24750 https://www.cve.org/CVERecord?id=CVE-2020-24750 Référence CVE CVE-2020-25649 https://www.cve.org/CVERecord?id=CVE-2020-25649 Référence CVE CVE-2020-28491 https://www.cve.org/CVERecord?id=CVE-2020-28491 Référence CVE CVE-2020-35490 https://www.cve.org/CVERecord?id=CVE-2020-35490 Référence CVE CVE-2020-35491 https://www.cve.org/CVERecord?id=CVE-2020-35491 Référence CVE CVE-2020-35728 https://www.cve.org/CVERecord?id=CVE-2020-35728 Référence CVE CVE-2020-36179 https://www.cve.org/CVERecord?id=CVE-2020-36179 Référence CVE CVE-2020-36180 https://www.cve.org/CVERecord?id=CVE-2020-36180 Référence CVE CVE-2020-36181 https://www.cve.org/CVERecord?id=CVE-2020-36181 Référence CVE CVE-2020-36182 https://www.cve.org/CVERecord?id=CVE-2020-36182 Référence CVE CVE-2020-36183 https://www.cve.org/CVERecord?id=

Official advisory ↗
CERT-FR · French · CERTFR-2022-AVI-659Multiples vulnérabilités dans Oracle WebLogic

De multiples vulnérabilités ont été découvertes dans Oracle WebLogic. Certaines d'entre elles permettent à un attaquant de provoquer une exécution de code arbitraire, un déni de service à distance et une atteinte à l'intégrité des données.

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

d?id=CVE-2020-13949 Référence CVE CVE-2020-15522 https://www.cve.org/CVERecord?id=CVE-2020-15522 Référence CVE CVE-2020-17521 https://www.cve.org/CVERecord?id=CVE-2020-17521 Référence CVE CVE-2020-17527 https://www.cve.org/CVERecord?id=CVE-2020-17527 Référence CVE CVE-2020-26217 https://www.cve.org/CVERecord?id=CVE-2020-26217 Référence CVE CVE-2020-26259 https://www.cve.org/CVERecord?id=CVE-2020-26259 Référence CVE CVE-2020-27218 https://www.cve.org/CVERecord?id=CVE-2020-27218 Référence CVE CVE-2020-27223 https://www.cve.org/CVERecord?id=CVE-2020-27223 Référence CVE CVE-2020-27782 https://www.cve.org/CVERecord?id=CVE-2020-27782 Référence CVE CVE-2020-28491 https://www.cve.org/CVERecord?id=CVE-2020-28491 Référence CVE CVE-2020-2875 https://www.cve.org/CVERecord?id=CVE-2020-2875 Référence CVE CVE-2020-2934 https://www.cve.org/CVERecord?id=CVE-2020-2934 Référence CVE CVE-2020-35510 https://www.cve.org/CVERecord?id=CVE-2020-35510 Référence CVE CVE-2020-9488 https://www.cve.org/CVERecord?id=CVE-2020-9488 Référence CVE CVE-2021-20218 https://www.cve.org/CVERecord?id=CVE-2021-20218 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-2021-21341 https://www.cve.org/CVERecord?id=CVE-20

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
  • jackson-dataformat-cbor as a component of Red Hat Integration Camel Quarkus 1
  • jackson-dataformat-cbor 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-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
Fixed
  • rh-sso7-keycloak-0:9.0.15-1.redhat_00002.1.el6sso.noarch as a component of Red Hat Single Sign-On 7.4 for RHEL 6 Server
  • rh-sso7-keycloak-0:9.0.15-1.redhat_00002.1.el6sso.src as a component of Red Hat Single Sign-On 7.4 for RHEL 6 Server
  • rh-sso7-keycloak-server-0:9.0.15-1.redhat_00002.1.el6sso.noarch as a component of Red Hat Single Sign-On 7.4 for RHEL 6 Server
  • rh-sso7-keycloak-0:9.0.15-1.redhat_00002.1.el7sso.noarch as a component of Red Hat Single Sign-On 7.4 for RHEL 7 Server
  • rh-sso7-keycloak-0:9.0.15-1.redhat_00002.1.el7sso.src as a component of Red Hat Single Sign-On 7.4 for RHEL 7 Server
  • rh-sso7-keycloak-server-0:9.0.15-1.redhat_00002.1.el7sso.noarch as a component of Red Hat Single Sign-On 7.4 for RHEL 7 Server
  • openshift-logging/elasticsearch6-rhel8@sha256:888b95895e36492288f7bd074ab7ac1fc97d3beef2b5e4a629f2140b06457cad_ppc64le as a component of OpenShift Logging 5.1
  • openshift-logging/elasticsearch6-rhel8@sha256:894af72f07632db2f82be51fec892c75d4c97716d8bf9df4c299dc33957fcadf_amd64 as a component of OpenShift Logging 5.1
  • openshift-logging/elasticsearch6-rhel8@sha256:d24ca356f97f9823e66fb043d8e5cf401d1fbd42053960c331ad60ecfba4ebbc_s390x as a component of OpenShift Logging 5.1
  • openshift-logging/elasticsearch6-rhel8@sha256:1a67ec9c7200171f5ec1fb56f256afdcd35e9e77c36fb9c3556ce89878d32b44_ppc64le as a component of OpenShift Logging 5.2
  • openshift-logging/elasticsearch6-rhel8@sha256:da7b9ef17d773085962a7d5fe71fdb5ba7a414a76f80e537433eec4d95b2bdb4_amd64 as a component of OpenShift Logging 5.2
  • openshift-logging/elasticsearch6-rhel8@sha256:ed95cf0214ef4865013773140f920fa7f6f5b39e357ef88c54ea5e28727fa835_s390x as a component of OpenShift Logging 5.2
  • openshift-logging/elasticsearch6-rhel8@sha256:481473fbd18dc15b86f2f6fdfd3bdfe2a4c7b7cf15bcf2f7ce905716af58e6e5_s390x as a component of OpenShift Logging 5.3
  • openshift-logging/elasticsearch6-rhel8@sha256:6245ddb9e393fe3d43fdc9f5c98158670b98cde48488204f23a4485276da32f9_amd64 as a component of OpenShift Logging 5.3
  • openshift-logging/elasticsearch6-rhel8@sha256:7a0496256e0a18bea6e499ee315bd42a13d49ef42fe5092fa43601553803f833_ppc64le as a component of OpenShift Logging 5.3
  • rh-sso7-keycloak-0:9.0.15-1.redhat_00002.1.el8sso.noarch as a component of Red Hat Single Sign-On 7.4 for RHEL 8
  • rh-sso7-keycloak-0:9.0.15-1.redhat_00002.1.el8sso.src as a component of Red Hat Single Sign-On 7.4 for RHEL 8
  • rh-sso7-keycloak-server-0:9.0.15-1.redhat_00002.1.el8sso.noarch as a component of Red Hat Single Sign-On 7.4 for RHEL 8
  • RHDM 7.12.0
  • RHPAM 7.12.0
  • Red Hat Fuse 7.10
  • Red Hat Integration
  • Red Hat Integration Camel Quarkus 2
  • Red Hat Single Sign-On 7.4.9
  • Red Hat build of Quarkus 2.2.3
  • vertx 4.1.2
Action
Before applying this update, make sure all previously released errata relevant to your system have been applied. For details on how to apply this update, 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 18 Feb 2021 · Last source change 16 Sept 2024, 20:16 UTC · CWE-770 · Allocation of Resources Without Limits or Throttling

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-2021-2611
Product sourceVendor CSAF · Red Hat Product Security
Remediation sourceVendor CSAF · Red Hat Product Security
CWE sourceNIST NVD
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 ↗

No material field changes have been recorded since change tracking began. Routine source refreshes and cosmetic edits are intentionally excluded.

Material fields only · duplicate refreshes suppressed · history retained for the configured operational retention period
CVE published
Fixed release or patch reference recorded
ENISA EUVD · EUVD-2021-2611↗Vendor CSAF · Red Hat Product Security↗CVE authority or vendor reference↗Patch or update reference↗Patch or update reference↗Patch or update reference↗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-2020-28491 · cve.blacktree.nl