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Path traversal vulnerability in Jenkins Subversion Plugin allows reading arbitrary files

Moderate severity GitHub Reviewed Published May 24, 2022 to the GitHub Advisory Database • Updated Dec 18, 2023

Package

maven org.jenkins-ci.plugins:subversion (Maven)

Affected versions

<= 2.15.0

Patched versions

2.15.1

Description

Subversion Plugin 2.15.0 and earlier does not restrict the name of a file when looking up a subversion key file on the controller from an agent.

This allows attackers able to control agent processes to read arbitrary files on the Jenkins controller file system.

Subversion Plugin 2.15.1 checks for the presence of and prohibits directory separator characters as part of the file name, restricting it to the intended directory.

References

Published by the National Vulnerability Database Nov 4, 2021
Published to the GitHub Advisory Database May 24, 2022
Reviewed Dec 16, 2022
Last updated Dec 18, 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
High
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:L/UI:N/S:U/C:H/I:N/A:N

EPSS score

0.242%
(64th percentile)

Weaknesses

CVE ID

CVE-2021-21698

GHSA ID

GHSA-q58j-fhj7-j6fg

Source code

Credits

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