Non-constant Time Comparison in Jenkins GitHub Plugin Reveals Weakness

CVE-2022-36885

What is CVE-2022-36885?

The Jenkins GitHub Plugin versions 1.34.4 and earlier exhibit a significant security flaw due to the use of a non-constant time comparison function for webhook signatures. This vulnerability allows attackers to leverage statistical methods to discern valid webhook signatures, potentially compromising the integrity of the webhook communications. Such a weakness opens the door for unauthorized actions to be performed on behalf of users, highlighting the critical need for timely updates and patching to enhance the security of Jenkins installations.

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