Jenkins GitHub Plugin 1.34.4 and earlier uses a non-constant time comparison function when checking whether the provided and computed webhook signatures are equal, allowing attackers to use statistical methods to obtain a valid webhook signature.
The product behaves differently or sends different responses under different circumstances in a way that is observable to an unauthorized actor, which exposes security-relevant information about the state of the product, such as whether a particular operation was successful or not.
| Link | Tags |
|---|---|
| https://www.jenkins.io/security/advisory/2022-07-27/#SECURITY-1849 | vendor advisory |
| http://www.openwall.com/lists/oss-security/2022/07/27/1 | third party advisory mailing list |