Information disclosure in Jenkins GitHub plugin

1) Information Exposure Through Timing Discrepancy

EUVDB-ID: #VU65851

Risk: Low

CVSSv4.0: 0.6 [CVSS:4.0/AV:N/AC:L/AT:P/PR:L/UI:N/VC:L/VI:N/VA:N/SC:N/SI:N/SA:N/E:U/U:Clear]

CVE-ID: CVE-2022-36885

CWE-ID: CWE-208 - Information Exposure Through Timing Discrepancy

Exploit availability: No

Description

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

The vulnerability exists due to the affected plugin does not use a constant-time comparison when checking whether the provided and computed webhook signatures are equal. A remote user can use statistical methods to obtain a valid webhook signature.

Mitigation

Install updates from vendor's website.

Vulnerable software versions

GitHub: 0.1 - 1.34.4

CPE2.3

• cpe:2.3:a:jenkins:github:0.1:*:*:*:*:*:*:*
• cpe:2.3:a:jenkins:github:0.2:*:*:*:*:*:*:*
• cpe:2.3:a:jenkins:github:0.3:*:*:*:*:*:*:*

External links

https://www.jenkins.io/security/advisory/2022-07-27/#SECURITY-1849
https://www.openwall.com/lists/oss-security/2022/07/27/1

Q & A

Can this vulnerability be exploited remotely?

Yes. This vulnerability can be exploited by a remote authenticated user via the Internet.

Is there known malware, which exploits this vulnerability?

No. We are not aware of malware exploiting this vulnerability.