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Apache Tomcat Incomplete Cleanup vulnerability

Moderate severity GitHub Reviewed Published Oct 10, 2023 to the GitHub Advisory Database • Updated Apr 25, 2024

Package

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

Affected versions

>= 11.0.0-M1, < 11.0.0-M12
>= 10.1.0-M1, < 10.1.14
>= 9.0.0-M1, < 9.0.81
>= 8.5.0, < 8.5.94

Patched versions

11.0.0-M12
10.1.14
9.0.81
8.5.94
maven org.apache.tomcat:tomcat (Maven)
>= 11.0.0-M1, < 11.0.0-M12
>= 10.1.0-M1, < 10.1.14
>= 9.0.0-M1, < 9.0.81
>= 8.5.0, < 8.5.94
11.0.0-M12
10.1.14
9.0.81
8.5.94

Description

Incomplete Cleanup vulnerability in Apache Tomcat.

When recycling various internal objects in Apache Tomcat from 11.0.0-M1 through 11.0.0-M11, from 10.1.0-M1 through 10.1.13, from 9.0.0-M1 through 9.0.80 and from 8.5.0 through 8.5.93, an error could cause Tomcat to skip some parts of the recycling process leading to information leaking from the current request/response to the next.

Users are recommended to upgrade to version 11.0.0-M12 onwards, 10.1.14 onwards, 9.0.81 onwards or 8.5.94 onwards, which fixes the issue.

References

Published by the National Vulnerability Database Oct 10, 2023
Published to the GitHub Advisory Database Oct 10, 2023
Reviewed Oct 10, 2023
Last updated Apr 25, 2024

Severity

Moderate

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
Low
Integrity
None
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:L/I:N/A:N

EPSS score

0.974%
(84th percentile)

Weaknesses

CVE ID

CVE-2023-42795

GHSA ID

GHSA-g8pj-r55q-5c2v

Source code

Credits

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