CVE-2021-22234 Path traversal in GitLab

Critical 9.6 Published Updated

Attackers can read arbitrary files on the server by uploading a specially crafted design image in GitLab.

Exploited in the wild
Not known
Login needed
Any signed-in user
Attackable
Over the internet
Victim action needed
Not needed
Fix
Available

What is CVE-2021-22234?

CVE-2021-22234 is a critical path traversal vulnerability in Gitlab Gitlab, published on 5 Aug 2021. Any signed-in user can exploit it over the network, with no action from the victim.

Official description

An issue has been discovered in GitLab CE/EE affecting all versions starting from 13.11 before 13.11.7, all versions starting from 13.12 before 13.12.8, and all versions starting from 14.0 before 14.0.4. A specially crafted design image allowed attackers to read arbitrary files on the server.

Weakness: CWE-79

Which versions are affected by CVE-2021-22234?

1 open source package ship an affected version, including gitlab. It affects 1 product.

PackageAffectedFixed in
gitlab BitnamiFrom 13.11.013.11.7, 13.12.8, 14.0.4

Products include Gitlab Gitlab.

How do I fix CVE-2021-22234?

Upgrade gitlab to a fixed version for your release line: 13.11.7, 13.12.8 or 14.0.4.

Upgrade, and resolve every user-supplied path against an allowed base folder before opening it. More about Path traversal.

Is CVE-2021-22234 being exploited?

There is no known exploitation of CVE-2021-22234 in the wild and no public exploit code.

All Gitlab Gitlab vulnerabilities

Sources

Also known as BIT-gitlab-2021-22234, GHSA-gj8c-fhmc-cqpg, UBUNTU-CVE-2021-22234.

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