SB2023121506 - Multiple vulnerabilities in Jenkins Scriptler plugin

Description

This security bulletin contains information about 2 vulnerabilities.

1) Improper access control (CVE-ID: CVE-2023-50764)

CWE-ID: CWE-284 - Improper Access Control

CVSSv4: CVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:A/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 restrict a file name query parameter in an HTTP endpoint. A remote user can delete arbitrary files on the Jenkins controller file system.

2) Information disclosure (CVE-ID: CVE-2023-50765)

CWE-ID: CWE-200 - Exposure of sensitive information to an unauthorized actor

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

The vulnerability allows a remote attacker to gain access to potentially sensitive information.

The vulnerability exists due to the affected plugin does not perform a permission check in an HTTP endpoint. A remote user can read the contents of a Groovy script by knowing its ID.

Remediation

Install update from vendor's website.

References

• https://www.jenkins.io/security/advisory/2023-12-13/#SECURITY-3205
• http://www.openwall.com/lists/oss-security/2023/12/13/4
• https://www.jenkins.io/security/advisory/2023-12-13/#SECURITY-3206