CVE-2021-39908 Information

Description

In all versions of GitLab CE/EE starting from 0.8.0 before 14.2.6 all versions starting from 14.3 before 14.3.4 and all versions starting from 14.4 before 14.4.1 certain Unicode characters can be abused to commit malicious code into projects without being noticed in merge request or source code viewer UI.

CVSS Vector

CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:H/A:N

Reference

https://hackerone.com/reports/1280077 https://gitlab.com/gitlab-org/cves/-/blob/master/2021/CVE-2021-39908.json https://gitlab.com/gitlab-org/gitlab/-/issues/337193

Attack Complexity

LOW

Privileges Required

NONE

User Interaction Required

NONE

Scope

NONE

Confidentiality Impact

UNCHANGED

Integrity Impact

NONE

Availability Impact

HIGH

Base Score

NONE

Base Severity

7.5