Non-constant Time Comparison in Jenkins GitHub Plugin Reveals Weakness
CVE-2022-36885

5.3MEDIUM

Key Information:

Vendor

Jenkins
Status
Jenkins Github Plugin
Vendor
CVE Published:
27 July 2022

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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Affected Version(s)

Jenkins GitHub Plugin <= 1.34.4

Jenkins GitHub Plugin 1.34.3.1

Jenkins GitHub Plugin 1.34.1.1

References

https://www.jenkins.io/security/advisory/2022-07-27/#SECU...
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http://www.openwall.com/lists/oss-security/2022/07/27/1
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CVSS V3.1

Score:
5.3
Severity:
MEDIUM
Confidentiality:
Low
Integrity:
None
Availability:
Low
Attack Vector:
Network
Attack Complexity:
Low
Privileges Required:
None
User Interaction:
None
Scope:
Unchanged

Timeline

  • Vulnerability published

  • Vulnerability Reserved

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