SB2021042211 - Multiple vulnerabilities in GitLab

Description

This security bulletin contains information about 2 secuirty vulnerabilities.

1) OS Command Injection (CVE-ID: CVE-2021-22205)

The vulnerability allows a remote user to execute arbitrary shell commands on the target system.

The vulnerability exists due to improper input validation within image parser when processing image files. A remote authenticated user can upload a specially crafted image file to the system and execute arbitrary OS commands on the target system.

Successful exploitation of this vulnerability may result in complete compromise of vulnerable system.

2) XML External Entity injection (CVE-ID: CVE-2021-28965)

The vulnerability allows a remote attacker to gain access to sensitive information.

The vulnerability exists due to insufficient validation of user-supplied XML input. A remote attacker can pass a specially crafted XML code to the affected application and view contents of arbitrary files on the system or initiate requests to external systems.

Successful exploitation of the vulnerability may allow an attacker to view contents of arbitrary file on the server or perform network scanning of internal and external infrastructure.

Remediation

Install update from vendor's website.

References

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