PT-2021-6533 · Gitlab · Gitlab Ce/Ee+1

Saleemrashid · CVE-2021-22242 · Published 2021-08-25 · Updated 2024-03-06

Positive Technologies (AI Summary)

CVSS v3.1

8.7

High

Base vector

AV:N/AC:L/PR:L/UI:R/S:C/C:H/I:H/A:N

Name of the Vulnerable Software and Affected Versions GitLab CE/EE versions 11.4 and up

Description The issue is related to insufficient input sanitization in Mermaid markdown, allowing a remote attacker to exploit a stored cross-site scripting vulnerability via a specially-crafted markdown. This can impact the integrity of data.

Recommendations For GitLab CE/EE versions 11.4 and up, consider disabling the Mermaid markdown feature until a patch is available to prevent exploitation of the stored cross-site scripting vulnerability. Restrict access to markdown editing to minimize the risk of malicious input.

Fix

XSS

Weakness Enumeration

CWE-79

Related Identifiers

BDU:2022-01793

BIT-GITLAB-2021-22242

CVE-2021-22242

Affected Products

Gitlab

Gitlab Ce/Ee

References · 14

• https://osv.dev/vulnerability/BIT-gitlab-2021-22242 · Vendor Advisory
• https://nvd.nist.gov/vuln/detail/CVE-2021-22242 · Security Note
• https://osv.dev/vulnerability/UBUNTU-CVE-2021-22242 · Vendor Advisory
• https://gitlab.com/gitlab-org/cves/-/blob/master/2021/CVE-2021-22242.json · Vendor Advisory
• https://ubuntu.com/security/CVE-2021-22242 · Vendor Advisory
• https://security-tracker.debian.org/tracker/CVE-2021-22242 · Vendor Advisory
• https://cve.org/CVERecord?id=CVE-2021-22242 · Security Note
• https://bdu.fstec.ru/vul/2022-01793 · Security Note
• https://osv.dev/vulnerability/CVE-2021-22242 · Vendor Advisory
• https://gitlab.com/gitlab-org/gitlab/-/issues/332528 · Note
• https://t.me/cibsecurity/27879 · Telegram Post
• https://hackerone.com/reports/1212822 · Note
• https://t.me/cvenotify/20091 · Telegram Post
• https://about.gitlab.com/releases/2021/08/03/security-release-gitlab-14-1-2-released · Note