Intrusion PreventionGitLab.Community.and.Enterprise.Edition.Mermaid.Markdown.XSS
Description
This indicates an attack attempt to exploit a Cross-Site Scripting Vulnerability in GitLab GitLab Community Edition (CE) and Enterprise Edition (EE).
The vulnerability is due to improper input validation of Mermaid Markdown. A remote, authenticated attacker can exploit this vulnerability by sending specially-crafted markdown to the target system. Successful exploitation could result in the execution of script code in the security context of the browser of any user visiting the affected pages.
Affected Products
GitLab GitLab Community Edition (CE) and Enterprise Edition (EE) prior to 13.12.9
GitLab GitLab Community Edition (CE) and Enterprise Edition (EE) prior to 14.0.7
GitLab GitLab Community Edition (CE) and Enterprise Edition (EE) prior to 14.1.2
Impact
System Compromise: Remote attackers can execute arbitrary script code in the context of the affected application.
Recommended Actions
Apply the most recent upgrade or patch from the vendor.
https://about.gitlab.com/releases/2021/08/03/security-release-gitlab-14-1-2-released
Telemetry
Coverage
| IPS (Regular DB) | |
| IPS (Extended DB) |
| ID | 50797 |
| Created | Sep 28, 2021 |
| Updated | May 25, 2022 |
| Risk |
|
| CVE ID | CVE-2021-22242 |
| Exploit Prediction Score | 0.1% |
| Default Action | drop |
| Active | |
| Affected OS | Linux, BSD |
| Affected App | Other |