CVE-2023-46656: Jenkins Multibranch Scan Webhook Trigger Plugin uses non-constant time webhook token comparison

October 25, 2023 (updated October 30, 2023)

Jenkins Multibranch Scan Webhook Trigger Plugin 1.0.9 and earlier uses a non-constant time comparison function when checking whether the provided and expected webhook token are equal, potentially allowing attackers to use statistical methods to obtain a valid webhook token.

References

www.openwall.com/lists/oss-security/2023/10/25/2
github.com/advisories/GHSA-8859-v9jp-cphf
nvd.nist.gov/vuln/detail/CVE-2023-46656
www.jenkins.io/security/advisory/2023-10-25/

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