PT-2023-27166 · Gitlab · Gitlab Ce/Ee+1

Ryhmnlfjon · Published 2023-08-02 · Updated 2024-10-03 · CVE-2023-3994

Positive Technologies (AI Summary)

CVSS v3.1

7.5

High

Base vector

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

Name of the Vulnerable Software and Affected Versions GitLab CE/EE versions 9.3 through 16.0.7 GitLab CE/EE versions 16.1 through 16.1.2 GitLab CE/EE versions 16.2 through 16.2.1

Description An issue has been discovered in GitLab CE/EE, where a Regular Expression Denial of Service was possible via sending crafted payloads that use ProjectReferenceFilter to the "preview markdown" endpoint.

Recommendations For versions 9.3 through 16.0.7, update to version 16.0.8 or later. For versions 16.1 through 16.1.2, update to version 16.1.3 or later. For versions 16.2 through 16.2.1, update to version 16.2.2 or later. As a temporary workaround, consider restricting access to the "preview markdown" endpoint until a patch is available.

Exploit

Fix

DoS

Weakness Enumeration

CWE-1333

Related Identifiers

BIT-GITLAB-2023-3994

CVE-2023-3994

Affected Products

Gitlab

Gitlab Ce/Ee

References · 11

• 🔥 https://github.com/CVEProject/cvelistV5/tree/main/cves/2023/3xxx/CVE-2023-3994.json · Exploit
• 🔥 https://hackerone.com/reports/1963255 · Exploit
• https://osv.dev/vulnerability/CVE-2023-3994 · Vendor Advisory
• https://nvd.nist.gov/vuln/detail/CVE-2023-3994 · Security Note
• https://osv.dev/vulnerability/BIT-gitlab-2023-3994 · Vendor Advisory
• https://ubuntu.com/security/CVE-2023-3994 · Vendor Advisory
• https://osv.dev/vulnerability/UBUNTU-CVE-2023-3994 · Vendor Advisory
• https://cve.org/CVERecord?id=CVE-2023-3994 · Security Note
• https://gitlab.com/gitlab-org/gitlab/-/issues/416225 · Note
• https://t.me/cibsecurity/67548 · Telegram Post
• https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2023-3994 · Note