SB2024012514 - Improper access control in Jenkins Git server plugin

Description

This security bulletin contains information about 1 vulnerability.

1) Improper access control (CVE-ID: CVE-2024-23899)

CWE-ID: CWE-284 - Improper Access Control

CVSSv4: CVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N/E:U/U:Green

The vulnerability allows a remote attacker to gain unauthorized access to otherwise restricted functionality.

The vulnerability exists due to the affected plugin does not disable a feature of its command parser that replaces an "@" character followed by a file path in an argument with the file’s contents. A remote user can read content from arbitrary files on the Jenkins controller file system, leading to arbitrary code execution.

Remediation

Install update from vendor's website.

References

• https://www.jenkins.io/security/advisory/2024-01-24/#SECURITY-3319
• http://www.openwall.com/lists/oss-security/2024/01/24/6