CVE-2022-43411 Non-constant time webhook token comparison in Jenkins GitLab Plugin

Medium 5.3 Published Updated

Attackers can statistically recover valid webhook tokens due to non-constant time comparison, bypassing authentication checks in the Jenkins GitLab Plugin.

Exploited in the wild
Not known
Login needed
Not needed
Attackable
Over the internet
Victim action needed
Not needed
Fix
Available

What is CVE-2022-43411?

CVE-2022-43411 is a medium-severity vulnerability in Jenkins GitLab Plugin, published on 19 Oct 2022. An attacker can exploit it over the internet without logging in, with no action from the victim.

Official description

Jenkins GitLab Plugin 1.5.35 and earlier uses a non-constant time comparison function when checking whether the provided and expected webhook token are equal, potentially allowing attackers to use statistical methods to obtain a valid webhook token.

Weakness: CWE-203

Which versions are affected by CVE-2022-43411?

2 open source packages ship an affected version, including org.jenkins-ci.plugins:gitlab-plugin. It affects 1 product.

PackageAffectedFixed in
org.jenkins-ci.plugins:gitlab-plugin MavenAll versions1.5.36
org.jenkins-ci.plugins:gitlab-plugin MavenAll versions1.5.36

Products include Jenkins Gitlab.

How do I fix CVE-2022-43411?

Upgrade org.jenkins-ci.plugins:gitlab-plugin to 1.5.36 or later.

Is CVE-2022-43411 being exploited?

There is no known exploitation of CVE-2022-43411 in the wild and no public exploit code.

Sources

Also known as GHSA-f9f9-4r63-4qcc.

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