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Jenkins Multibranch Scan Webhook Trigger Plugin uses non-constant time webhook token comparison

Low severity GitHub Reviewed Published Oct 25, 2023 to the GitHub Advisory Database • Updated Nov 11, 2023

Package

maven igalg.jenkins.plugins:multibranch-scan-webhook-trigger (Maven)

Affected versions

<= 1.0.9

Patched versions

None

Description

Jenkins Multibranch Scan Webhook Trigger Plugin 1.0.9 and earlier does not use a constant-time comparison when checking whether the provided and expected webhook token are equal.

This could potentially allow attackers to use statistical methods to obtain a valid webhook token.

As of publication of this advisory, there is no fix.

References

Published by the National Vulnerability Database Oct 25, 2023
Published to the GitHub Advisory Database Oct 25, 2023
Reviewed Oct 30, 2023
Last updated Nov 11, 2023

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
None
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:N/UI:N/S:U/C:L/I:N/A:N

EPSS score

0.063%
(29th percentile)

Weaknesses

CVE ID

CVE-2023-46656

GHSA ID

GHSA-8859-v9jp-cphf

Source code

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