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Jenkins GitHub plugin uses weak webhook signature function

Low severity GitHub Reviewed Published Jul 28, 2022 to the GitHub Advisory Database • Updated Jan 5, 2024

Package

maven com.coravy.hudson.plugins.github:github (Maven)

Affected versions

<= 1.34.4

Patched versions

1.34.5

Description

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. GitHub Plugin 1.34.5 uses a constant-time comparison when validating the webhook signature.

References

Published by the National Vulnerability Database Jul 27, 2022
Published to the GitHub Advisory Database Jul 28, 2022
Reviewed Aug 24, 2022
Last updated Jan 5, 2024

Severity

Low

CVSS overall score

This score calculates overall vulnerability severity from 0 to 10 and is based on the Common Vulnerability Scoring System (CVSS).
/ 10

CVSS v3 base metrics

Attack vector
Network
Attack complexity
High
Privileges required
Low
User interaction
None
Scope
Unchanged
Confidentiality
Low
Integrity
None
Availability
None

CVSS v3 base metrics

Attack vector: More severe the more the remote (logically and physically) an attacker can be in order to exploit the vulnerability.
Attack complexity: More severe for the least complex attacks.
Privileges required: More severe if no privileges are required.
User interaction: More severe when no user interaction is required.
Scope: More severe when a scope change occurs, e.g. one vulnerable component impacts resources in components beyond its security scope.
Confidentiality: More severe when loss of data confidentiality is highest, measuring the level of data access available to an unauthorized user.
Integrity: More severe when loss of data integrity is the highest, measuring the consequence of data modification possible by an unauthorized user.
Availability: More severe when the loss of impacted component availability is highest.
CVSS:3.1/AV:N/AC:H/PR:L/UI:N/S:U/C:L/I:N/A:N

EPSS score

0.078%
(34th percentile)

Weaknesses

CVE ID

CVE-2022-36885

GHSA ID

GHSA-mxcc-7h5m-x57r

Source code

Credits

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