Resource exhaustion in GitLab Enterprise Edition and Gitlab Community Edition - CVE-2021-39877
Published: October 4, 2021
Vulnerability identifier: #VU57011
CSH Severity: Medium
CVSS v4: 8.7 [CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:N/VI:N/VA:H/SC:N/SI:N/SA:N]
CVE-ID: CVE-2021-39877
CWE-ID: CWE-400
Exploitation vector: Remote access
Exploit availability:
No public exploit available
Vulnerability details
The vulnerability allows a remote attacker to perform a denial of service (DoS) attack.
The vulnerability exists due to application does not properly control consumption of internal resources in Markdown parser. A remote attacker can trigger resource exhaustion and perform a denial of service (DoS) attack.
Affected software
GitLab Enterprise Edition
Gitlab Community Edition
Gitlab Community Edition
How to mitigate CVE-2021-39877
Install updates from vendor's website.
GitLab Enterprise Edition - addressed in versions 14.1.7, 14.2.5, 14.3.1
Gitlab Community Edition - addressed in versions 14.1.7, 14.2.5, 14.3.1
Gitlab Community Edition - addressed in versions 14.1.7, 14.2.5, 14.3.1