SB2024100725 - Multiple vulnerabilities in Jenkins OpenId Connect Authentication plugin

Description

This security bulletin contains information about 2 vulnerabilities.

1) Improper Authentication (CVE-ID: CVE-2024-47806)

CWE-ID: CWE-287 - Improper Authentication

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

The vulnerability allows a remote attacker to bypass authentication process.

The vulnerability exists due to the affected plugin does not check the aud (Audience) claim of an ID Token during its authentication flow, a value to verify the token is issued for the correct client. A remote attacker can subvert the authentication flow and gain administrator access to Jenkins.

2) Improper Authentication (CVE-ID: CVE-2024-47807)

CWE-ID: CWE-287 - Improper Authentication

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

The vulnerability allows a remote attacker to bypass authentication process.

The vulnerability exists due to the affected plugin does not check the iss (Issuer) claim of an ID Token during its authentication flow, a value that identifies the Originating Party (IdP). A remote attacker can subvert the authentication flow and gain administrator access to Jenkins.

Remediation

Install update from vendor's website.

References

• https://www.jenkins.io/security/advisory/2024-10-02/#SECURITY-3441%20(1)
• https://www.jenkins.io/security/advisory/2024-10-02/#SECURITY-3441%20(2)