CVE-2021-22201 Path traversal in GitLab

Critical 9.6 Published Updated

An attacker can read arbitrary files on the server by uploading a specially crafted import file 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-2021-22201?

CVE-2021-22201 is a critical path traversal vulnerability in Gitlab Gitlab, published on 2 Apr 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 13.9. A specially crafted import file could read files on the server.

Which versions are affected by CVE-2021-22201?

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

PackageAffectedFixed in
gitlab BitnamiFrom 13.9.013.9.5, 13.10.1

Products include Gitlab Gitlab.

How do I fix CVE-2021-22201?

Upgrade gitlab to a fixed version for your release line: 13.9.5 or 13.10.1.

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

Is CVE-2021-22201 being exploited?

There is no known exploitation of CVE-2021-22201 in the wild and no public exploit code.

Public exploit code: 1 proofs of concept on GitHub.

All Gitlab Gitlab vulnerabilities

Sources

Also known as BIT-gitlab-2021-22201, GHSA-4c45-wmm4-4hq2, UBUNTU-CVE-2021-22201.

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