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Full vulnerability report · 2022
CVE-2022-25762High confidence

Response mix-up with WebSocket concurrent send and close

Apache Software Foundation · Apache Tomcat

8.6HighCVSS 3.1
Recommended action
Within 7 days

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

Patch available
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-2022-25762 · CSAF 2.0 · revision 3 · finalRed Hat Product Securitytomcat: request mixup
11 known affected

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

  • tomcat6 as a component of Red Hat Enterprise Linux 6
  • tomcat6-admin-webapps as a component of Red Hat Enterprise Linux 6
  • tomcat6-docs-webapp as a component of Red Hat Enterprise Linux 6
  • tomcat6-el-2.1-api as a component of Red Hat Enterprise Linux 6
  • tomcat6-javadoc as a component of Red Hat Enterprise Linux 6
  • tomcat6-jsp-2.1-api as a component of Red Hat Enterprise Linux 6
  • tomcat6-lib as a component of Red Hat Enterprise Linux 6
  • tomcat6-log4j as a component of Red Hat Enterprise Linux 6
  • tomcat6-servlet-2.5-api as a component of Red Hat Enterprise Linux 6
  • tomcat6-webapps as a component of Red Hat Enterprise Linux 6
  • tomcat6.src as a component of Red Hat Enterprise Linux 6
Summary
A flaw was found in the tomcat package. When a web application sends a WebSocket message concurrently with the WebSocket connection closing, the application may continue to use the socket after it has been closed. In this case, the error handling triggered could cause the pooled object to be placed in the pool twice. This issue results in subsequent connections using the same object concurrently, which causes data to be potentially returned to the wrong user or application stability issues.
Remediation
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.

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-2022-4051

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

If a web application sends a WebSocket message concurrently with the WebSocket connection closing when running on Apache Tomcat 8.5.0 to 8.5.75 or Apache Tomcat 9.0.0.M1 to 9.0.20, it is possible that the application will continue to use the socket after it has been closed. The error handling triggered in this case could cause the a pooled object to be placed in the pool twice. This could result in subsequent connections using the same object concurrently which could result in data being returned to the wrong use and/or other errors.

What

If a web application sends a WebSocket message concurrently with the WebSocket connection closing when running on Apache Tomcat 8.5.0 to 8.5.75 or Apache Tomcat 9.0.0.M1 to 9.0.20, it is possible that the application will continue to use the socket after it has been closed. The error handling triggered in this case could cause the a pooled object to be placed in the pool twice. This could result in subsequent connections using the same object concurrently which could result in data being returned to the wrong use and/or other errors.

Why

The product does not release or incorrectly releases a resource before it is made available for re-use.

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

If a web application sends a WebSocket message concurrently with the WebSocket connection closing when running on Apache Tomcat 8.5.0 to 8.5.75 or Apache Tomcat 9.0.0.M1 to 9.0.20, it is possible that the application will continue to use the socket after it has been closed. The error handling triggered in this case could cause the a pooled object to be placed in the pool twice. This could result in subsequent connections using the same object concurrently which could result in data being returned to the wrong use and/or other errors.

Why

The product does not release or incorrectly releases a resource before it is made available for re-use.

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 → Improper Resource Shutdown or Release → 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-404 ↗

CWE-404: Improper Resource Shutdown or Release. The product does not release or incorrectly releases a resource before it is made available for re-use.

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:H/I:L/A:L

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.CHighConfidentiality impact: A successful attack can cause a major loss.ILowIntegrity impact: A successful attack can cause a limited loss.ALowAvailability impact: A successful attack can cause a limited 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-404
A

Official authority intelligence

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

BSI · German · WID-SEC-W-2022-1335Xerox FreeFlow Print Server: Mehrere Schwachstellen

Ein entfernter, anonymer Angreifer kann mehrere Schwachstellen in Xerox FreeFlow Print Server ausnutzen, um die Vertraulichkeit, Verfügbarkeit und Integrität des Systems zu gefährden.

Official advisory
BSI · German · WID-SEC-W-2022-0899Apache Tomcat: Schwachstelle ermöglicht Offenlegung von Informationen

Ein entfernter, anonymer Angreifer kann eine Schwachstelle in Apache Tomcat ausnutzen, um Informationen offenzulegen.

Official advisory
CERT-FR · French · CERTFR-2024-AVI-0958Multiples vulnérabilités dans les produits IBM

d?id=CVE-2021-47468 Référence CVE CVE-2021-47491 https://www.cve.org/CVERecord?id=CVE-2021-47491 Référence CVE CVE-2021-47548 https://www.cve.org/CVERecord?id=CVE-2021-47548 Référence CVE CVE-2021-47579 https://www.cve.org/CVERecord?id=CVE-2021-47579 Référence CVE CVE-2021-47624 https://www.cve.org/CVERecord?id=CVE-2021-47624 Référence CVE CVE-2022-23181 https://www.cve.org/CVERecord?id=CVE-2022-23181 Référence CVE CVE-2022-23471 https://www.cve.org/CVERecord?id=CVE-2022-23471 Référence CVE CVE-2022-23648 https://www.cve.org/CVERecord?id=CVE-2022-23648 Référence CVE CVE-2022-24999 https://www.cve.org/CVERecord?id=CVE-2022-24999 Référence CVE CVE-2022-25762 https://www.cve.org/CVERecord?id=CVE-2022-25762 Référence CVE CVE-2022-29885 https://www.cve.org/CVERecord?id=CVE-2022-29885 Référence CVE CVE-2022-31030 https://www.cve.org/CVERecord?id=CVE-2022-31030 Référence CVE CVE-2022-34305 https://www.cve.org/CVERecord?id=CVE-2022-34305 Référence CVE CVE-2022-40897 https://www.cve.org/CVERecord?id=CVE-2022-40897 Référence CVE CVE-2022-42252 https://www.cve.org/CVERecord?id=CVE-2022-42252 Référence CVE CVE-2022-48632 https://www.cve.org/CVERecord?id=CVE-2022-48632 Référence CVE CVE-2022-48743 https://www.cve.org/CVERecord?id=CVE-2022-48743 Référence CVE CVE-2022-48747 https://www.cve.org/CVERecord?id=

Official advisory
CERT-FR · French · CERTFR-2024-AVI-0240Multiples vulnérabilités dans les produits IBM

d?id=CVE-2021-41079 Référence CVE CVE-2021-42340 https://www.cve.org/CVERecord?id=CVE-2021-42340 Référence CVE CVE-2022-21216 https://www.cve.org/CVERecord?id=CVE-2022-21216 Référence CVE CVE-2022-22950 https://www.cve.org/CVERecord?id=CVE-2022-22950 Référence CVE CVE-2022-22970 https://www.cve.org/CVERecord?id=CVE-2022-22970 Référence CVE CVE-2022-22971 https://www.cve.org/CVERecord?id=CVE-2022-22971 Référence CVE CVE-2022-22976 https://www.cve.org/CVERecord?id=CVE-2022-22976 Référence CVE CVE-2022-22978 https://www.cve.org/CVERecord?id=CVE-2022-22978 Référence CVE CVE-2022-22980 https://www.cve.org/CVERecord?id=CVE-2022-22980 Référence CVE CVE-2022-25762 https://www.cve.org/CVERecord?id=CVE-2022-25762 Référence CVE CVE-2022-27772 https://www.cve.org/CVERecord?id=CVE-2022-27772 Référence CVE CVE-2022-28388 https://www.cve.org/CVERecord?id=CVE-2022-28388 Référence CVE CVE-2022-29885 https://www.cve.org/CVERecord?id=CVE-2022-29885 Référence CVE CVE-2022-31690 https://www.cve.org/CVERecord?id=CVE-2022-31690 Référence CVE CVE-2022-3545 https://www.cve.org/CVERecord?id=CVE-2022-3545 Référence CVE CVE-2022-3594 https://www.cve.org/CVERecord?id=CVE-2022-3594 Référence CVE CVE-2022-3640 https://www.cve.org/CVERecord?id=CVE-2022-3640 Référence CVE CVE-2022-36402 https://www.cve.org/CVERecord?id=CVE-20

Official advisory
CERT-FR · French · CERTFR-2022-AVI-952Multiples vulnérabilités dans IBM QRadar

.org/CVERecord?id=CVE-2022-1154 Référence CVE CVE-2022-1271 https://www.cve.org/CVERecord?id=CVE-2022-1271 Référence CVE CVE-2022-1552 https://www.cve.org/CVERecord?id=CVE-2022-1552 Référence CVE CVE-2022-1729 https://www.cve.org/CVERecord?id=CVE-2022-1729 Référence CVE CVE-2022-1966 https://www.cve.org/CVERecord?id=CVE-2022-1966 Référence CVE CVE-2022-2047 https://www.cve.org/CVERecord?id=CVE-2022-2047 Référence CVE CVE-2022-2048 https://www.cve.org/CVERecord?id=CVE-2022-2048 Référence CVE CVE-2022-22968 https://www.cve.org/CVERecord?id=CVE-2022-22968 Référence CVE CVE-2022-25169 https://www.cve.org/CVERecord?id=CVE-2022-25169 Référence CVE CVE-2022-25762 https://www.cve.org/CVERecord?id=CVE-2022-25762 Référence CVE CVE-2022-29885 https://www.cve.org/CVERecord?id=CVE-2022-29885 Référence CVE CVE-2022-30126 https://www.cve.org/CVERecord?id=CVE-2022-30126 Référence CVE CVE-2022-30973 https://www.cve.org/CVERecord?id=CVE-2022-30973 Référence CVE CVE-2022-32250 https://www.cve.org/CVERecord?id=CVE-2022-32250 Référence CVE CVE-2022-33879 https://www.cve.org/CVERecord?id=CVE-2022-33879 Gestion détaillée du document le 26 octobre 2022 Version initiale Alertes Avis Bulletins d’actualités Mentions légales Conditions générales À propos Contact cyber.gouv.fr service-public.fr legifrance.gouv.fr info.gou

Official advisory
NCSC-NL · Dutch · NCSC-2025-0123Kwetsbaarheden verholpen in Oracle Database Producten

De kwetsbaarheden stellen ongeauthenticeerde kwaadwillenden in staat om een Denial-of-Service te veroorzaken of om ongeautoriseerde toegang te verkrijgen tot gevoelige gegevens en gegevens te manipuleren. Subcomponenten als de RDBMS Listener, Java VM, en andere componenten zijn specifiek kwetsbaar, met CVSS-scores variërend van 5.3 tot 7.5, wat duidt op een gematigd tot hoog risico.

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
tomcat6 as a component of Red Hat Enterprise Linux 6; tomcat6-admin-webapps as a component of Red Hat Enterprise Linux 6; tomcat6-docs-webapp as a component of Red Hat Enterprise Linux 6; tomcat6-el-2.1-api as a component of Red Hat Enterprise Linux 6; tomcat6-javadoc as a component of Red Hat Enterprise Linux 6; tomcat6-jsp-2.1-api as a component of Red Hat Enterprise Linux 6; tomcat6-lib as a component of Red Hat Enterprise Linux 6; tomcat6-log4j as a component of Red Hat Enterprise Linux 6; tomcat6-servlet-2.5-api as a component of Red Hat Enterprise Linux 6; tomcat6-webapps as a component of Red Hat Enterprise Linux 6; tomcat6.src as a component of Red Hat Enterprise Linux 6
Fixed
apache-commons-collections-0:3.2.2-10.module+el8.1.0+3366+6dfb954c.noarch (pki-deps:10.6) as a component of Red Hat Enterprise Linux AppStream (v. 8); apache-commons-collections-0:3.2.2-10.module+el8.1.0+3366+6dfb954c.src (pki-deps:10.6) as a component of Red Hat Enterprise Linux AppStream (v. 8); apache-commons-lang-0:2.6-21.module+el8.1.0+3366+6dfb954c.noarch (pki-deps:10.6) as a component of Red Hat Enterprise Linux AppStream (v. 8); apache-commons-lang-0:2.6-21.module+el8.1.0+3366+6dfb954c.src (pki-deps:10.6) as a component of Red Hat Enterprise Linux AppStream (v. 8); apache-commons-net-0:3.6-3.module+el8.3.0+6805+72837426.noarch (pki-deps:10.6) as a component of Red Hat Enterprise Linux AppStream (v. 8); apache-commons-net-0:3.6-3.module+el8.3.0+6805+72837426.src (pki-deps:10.6) as a component of Red Hat Enterprise Linux AppStream (v. 8); bea-stax-0:1.2.0-16.module+el8.1.0+3366+6dfb954c.src (pki-deps:10.6) as a component of Red Hat Enterprise Linux AppStream (v. 8); bea-stax-api-0:1.2.0-16.module+el8.1.0+3366+6dfb954c.noarch (pki-deps:10.6) as a component of Red Hat Enterprise Linux AppStream (v. 8); glassfish-fastinfoset-0:1.2.13-9.module+el8.1.0+3366+6dfb954c.noarch (pki-deps:10.6) as a component of Red Hat Enterprise Linux AppStream (v. 8); glassfish-fastinfoset-0:1.2.13-9.module+el8.1.0+3366+6dfb954c.src (pki-deps:10.6) as a component of Red Hat Enterprise Linux AppStream (v. 8); glassfish-jaxb-0:2.2.11-11.module+el8.1.0+3366+6dfb954c.src (pki-deps:10.6) as a component of Red Hat Enterprise Linux AppStream (v. 8); glassfish-jaxb-api-0:2.2.12-8.module+el8.1.0+3366+6dfb954c.noarch (pki-deps:10.6) as a component of Red Hat Enterprise Linux AppStream (v. 8); glassfish-jaxb-api-0:2.2.12-8.module+el8.1.0+3366+6dfb954c.src (pki-deps:10.6) as a component of Red Hat Enterprise Linux AppStream (v. 8); glassfish-jaxb-core-0:2.2.11-11.module+el8.1.0+3366+6dfb954c.noarch (pki-deps:10.6) as a component of Red Hat Enterprise Linux AppStream (v. 8); glassfish-jaxb-runtime-0:2.2.11-11.module+el8.1.0+3366+6dfb954c.noarch (pki-deps:10.6) as a component of Red Hat Enterprise Linux AppStream (v. 8); glassfish-jaxb-txw2-0:2.2.11-11.module+el8.1.0+3366+6dfb954c.noarch (pki-deps:10.6) as a component of Red Hat Enterprise Linux AppStream (v. 8); jackson-annotations-0:2.10.0-1.module+el8.2.0+5059+3eb3af25.noarch (pki-deps:10.6) as a component of Red Hat Enterprise Linux AppStream (v. 8); jackson-annotations-0:2.10.0-1.module+el8.2.0+5059+3eb3af25.src (pki-deps:10.6) as a component of Red Hat Enterprise Linux AppStream (v. 8); jackson-core-0:2.10.0-1.module+el8.2.0+5059+3eb3af25.noarch (pki-deps:10.6) as a component of Red Hat Enterprise Linux AppStream (v. 8); jackson-core-0:2.10.0-1.module+el8.2.0+5059+3eb3af25.src (pki-deps:10.6) as a component of Red Hat Enterprise Linux AppStream (v. 8); jackson-databind-0:2.10.0-1.module+el8.2.0+5059+3eb3af25.noarch (pki-deps:10.6) as a component of Red Hat Enterprise Linux AppStream (v. 8); jackson-databind-0:2.10.0-1.module+el8.2.0+5059+3eb3af25.src (pki-deps:10.6) as a component of Red Hat Enterprise Linux AppStream (v. 8); jackson-jaxrs-json-provider-0:2.9.9-1.module+el8.1.0+3832+9784644d.noarch (pki-deps:10.6) as a component of Red Hat Enterprise Linux AppStream (v. 8); jackson-jaxrs-providers-0:2.9.9-1.module+el8.1.0+3832+9784644d.noarch (pki-deps:10.6) as a component of Red Hat Enterprise Linux AppStream (v. 8); jackson-jaxrs-providers-0:2.9.9-1.module+el8.1.0+3832+9784644d.src (pki-deps:10.6) as a component of Red Hat Enterprise Linux AppStream (v. 8); jackson-module-jaxb-annotations-0:2.7.6-4.module+el8.1.0+3366+6dfb954c.noarch (pki-deps:10.6) as a component of Red Hat Enterprise Linux AppStream (v. 8); jackson-module-jaxb-annotations-0:2.7.6-4.module+el8.1.0+3366+6dfb954c.src (pki-deps:10.6) as a component of Red Hat Enterprise Linux AppStream (v. 8); jakarta-commons-httpclient-1:3.1-28.module+el8.1.0+3366+6dfb954c.noarch (pki-deps:10.6) as a component of Red Hat Enterprise Linux AppStream (v. 8); jakarta-commons-httpclient-1:3.1-28.module+el8.1.0+3366+6dfb954c.src (pki-deps:10.6) as a component of Red Hat Enterprise Linux AppStream (v. 8); javassist-0:3.18.1-8.module+el8.1.0+3366+6dfb954c.noarch (pki-deps:10.6) as a component of Red Hat Enterprise Linux AppStream (v. 8); and 98 more
Action
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 13 May 2022 · Last source change 3 Aug 2024, 04:49 UTC · CWE-404 · Improper Resource Shutdown or Release

CVE recordCVE.org · 5.1
CVSS sourceNIST NVD
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-2022-4051
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 →

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-2022-4051↗Vendor CSAF · Red Hat Product Security↗CVE authority or vendor 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-2022-25762 · cve.blacktree.nl