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Apache Tomcat Improper Input Validation vulnerability

High severity GitHub Reviewed Published Nov 28, 2023 to the GitHub Advisory Database • Updated Jul 12, 2024

Package

maven org.apache.tomcat.embed:tomcat-embed-core (Maven)

Affected versions

>= 11.0.0-M1, < 11.0.0-M11
>= 10.1.0-M1, < 10.1.16
>= 9.0.0-M1, < 9.0.83
>= 8.5.0, < 8.5.96

Patched versions

11.0.0-M11
10.1.16
9.0.83
8.5.96
maven org.apache.tomcat:tomcat-catalina (Maven)
>= 11.0.0-M1, < 11.0.0-M11
>= 10.1.0-M1, < 10.1.16
>= 9.0.0-M1, < 9.0.83
>= 8.5.0, < 8.5.96
11.0.0-M11
10.1.16
9.0.83
8.5.96

Description

Improper Input Validation vulnerability in Apache Tomcat. Tomcat from 11.0.0-M1 through 11.0.0-M10, from 10.1.0-M1 through 10.1.15, from 9.0.0-M1 through 9.0.82, and from 8.5.0 through 8.5.95 did not correctly parse HTTP trailer headers. A trailer header that exceeded the header size limit could cause Tomcat to treat a single request as multiple requests leading to the possibility of request smuggling when behind a reverse proxy.

Users are recommended to upgrade to version 11.0.0-M11 onwards, 10.1.16 onwards, 9.0.83 onwards or 8.5.96 onwards, which fix the issue.

References

Published by the National Vulnerability Database Nov 28, 2023
Published to the GitHub Advisory Database Nov 28, 2023
Reviewed Nov 28, 2023
Last updated Jul 12, 2024

Severity

High

CVSS overall score

This score calculates overall vulnerability severity from 0 to 10 and is based on the Common Vulnerability Scoring System (CVSS).
/ 10

CVSS v3 base metrics

Attack vector
Network
Attack complexity
Low
Privileges required
None
User interaction
None
Scope
Unchanged
Confidentiality
None
Integrity
High
Availability
None

CVSS v3 base metrics

Attack vector: More severe the more the remote (logically and physically) an attacker can be in order to exploit the vulnerability.
Attack complexity: More severe for the least complex attacks.
Privileges required: More severe if no privileges are required.
User interaction: More severe when no user interaction is required.
Scope: More severe when a scope change occurs, e.g. one vulnerable component impacts resources in components beyond its security scope.
Confidentiality: More severe when loss of data confidentiality is highest, measuring the level of data access available to an unauthorized user.
Integrity: More severe when loss of data integrity is the highest, measuring the consequence of data modification possible by an unauthorized user.
Availability: More severe when the loss of impacted component availability is highest.
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:H/A:N

EPSS score

0.849%
(83rd percentile)

Weaknesses

CVE ID

CVE-2023-46589

GHSA ID

GHSA-fccv-jmmp-qg76

Source code

Credits

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