#VU65851 Information Exposure Through Timing Discrepancy in GitHub


Published: 2022-07-28

Vulnerability identifier: #VU65851

Vulnerability risk: Low

CVSSv3.1: 2.7 [CVSS:3.1/AV:N/AC:H/PR:L/UI:N/S:U/C:L/I:N/A:N/E:U/RL:O/RC:C]

CVE-ID: CVE-2022-36885

CWE-ID: CWE-208

Exploitation vector: Network

Exploit availability: No

Vulnerable software:
GitHub
Web applications / Modules and components for CMS

Vendor: Jenkins

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


External links
http://www.jenkins.io/security/advisory/2022-07-27/#SECURITY-1849
http://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.


Latest bulletins with this vulnerability