CVE-2023-43494

Description

Jenkins allows filtering builds in the build history widget by specifying an expression that searches for matching builds by name, description, parameter values, etc. Jenkins 2.50 through 2.423 (both inclusive), LTS 2.60.1 through 2.414.1 (both inclusive) does not exclude sensitive build variables (e.g., password parameter values) from this search. This allows attackers with Item/Read permission to obtain values of sensitive variables used in builds by iteratively testing different characters until the correct sequence is discovered. Jenkins 2.424, LTS 2.414.2 excludes sensitive variables from this search.

How to fix CVE-2023-43494

To remediate CVE-2023-43494, upgrade the affected package to a fixed version below.

• —upgrade to 2.424.0 or later
• —upgrade to 2.414.2 or later

Is CVE-2023-43494 being exploited?

Moderate — EPSS is 49.1%. Track this CVE but it's not at the top of the prioritisation list.

Affected packages (2)

• >= 2.50.0, < 2.424.0
• >= 2.50, < 2.414.2

CVSS scores

References (5)

• ADVISORYnvd.nist.gov/vuln/detail/CVE-2023-43494
• PATCHgithub.com/jenkinsci/jenkins
• WEBgithub.com/jenkinsci/jenkins/commit/b8ac8cd4c51511b9f844846ba80a8aed054288c5
• WEBwww.jenkins.io/security/advisory/2023-09-20/#SECURITY-3261