Gitlab CE/EE - Remote Code Execution (CVE-2021-22205)

Gitlab CE/EE is affected by a Remote Code Execution, located in the /uploads/user endpoint. The versions impacted are those less than 13.10.3, 13.9.6, and 13.8.8. The root cause of this vulnerability consists in insufficient validation of image files that are parsed by the image parser. This allows a malicious unaunthenticated attacker to execute arbitrary code on the server.

Sniper can gain unauthenticated Remote Code Execution on the target system and extract multiple artefacts as evidence.

The risk exists that a remote unauthenticated attacker can fully compromise the Gitlab CE/EE in order to steal confidential information, install ransomware or pivot to the internal network.

Upgrade the Gitlab CE/EE server to the latest version or to a version higher or equal than 13.10.3, 13.9.6, or 13.8.8.

https://nvd.nist.gov/vuln/detail/CVE-2021-22205

https://about.gitlab.com/releases/2021/04/14/security-release-gitlab-13-10-3-released/