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DoS vulnerability in bundled XStream library in Jenkins Core

Moderate severity GitHub Reviewed Published Feb 10, 2022 to the GitHub Advisory Database • Updated Dec 22, 2023

Package

maven org.jenkins-ci.main:jenkins-core (Maven)

Affected versions

>= 2.320, < 2.334
< 2.319.3

Patched versions

2.334
2.319.3

Description

Jenkins 2.333 and earlier, LTS 2.319.2 and earlier is affected by the XStream library’s vulnerability CVE-2021-43859. This library is used by Jenkins to serialize and deserialize various XML files, like global and job config.xml, build.xml, and numerous others.

This allows attackers able to submit crafted XML files to Jenkins to be parsed as configuration, e.g. through the POST config.xml API, to cause a denial of service (DoS).

References

Published by the National Vulnerability Database Feb 9, 2022
Published to the GitHub Advisory Database Feb 10, 2022
Reviewed Jun 20, 2022
Last updated Dec 22, 2023

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
Low
User interaction
None
Scope
Unchanged
Confidentiality
None
Integrity
None
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:N/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H

EPSS score

0.116%
(47th percentile)

Weaknesses

CVE ID

CVE-2022-0538

GHSA ID

GHSA-34wx-x2w9-vqm3

Source code

No known source code

Credits

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