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Potential remote code execution in Apache Tomcat

High severity GitHub Reviewed Published Mar 19, 2021 to the GitHub Advisory Database • Updated Feb 3, 2023

Package

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

Affected versions

>= 10.0.0-M1, < 10.0.2
>= 9.0.0, < 9.0.41
>= 8.0.0, < 8.5.61
>= 7.0.0, < 7.0.107

Patched versions

10.0.2
9.0.41
8.5.61
7.0.108

Description

The fix for CVE-2020-9484 was incomplete. When using Apache Tomcat 10.0.0-M1 to 10.0.0, 9.0.0.M1 to 9.0.41, 8.5.0 to 8.5.61 or 7.0.0. to 7.0.107 with a configuration edge case that was highly unlikely to be used, the Tomcat instance was still vulnerable to CVE-2020-9494. Note that both the previously published prerequisites for CVE-2020-9484 and the previously published mitigations for CVE-2020-9484 also apply to this issue.

References

Published by the National Vulnerability Database Mar 1, 2021
Reviewed Mar 19, 2021
Published to the GitHub Advisory Database Mar 19, 2021
Last updated Feb 3, 2023

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

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

EPSS score

0.055%
(24th percentile)

Weaknesses

CVE ID

CVE-2021-25329

GHSA ID

GHSA-jgwr-3qm3-26f3

Source code

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