PT-2021-22727 · Gitlab · Gitlab Ce/Ee+1

Executor · Published 2021-10-05 · Updated 2024-03-06 · CVE-2021-39881

Positive Technologies (AI Summary)

CVSS v2.0

3.5

Low

Base vector

AV:N/AC:M/Au:S/C:N/I:P/A:N

Name of the Vulnerable Software and Affected Versions: GitLab CE/EE versions 7.7 and later

Description: The application may allow a malicious user to create an OAuth client application with arbitrary scope names, potentially tricking unsuspecting users into authorizing the malicious client application using the spoofed scope name and description.

Recommendations: For GitLab CE/EE versions 7.7 and later, consider restricting the ability to create OAuth client applications with arbitrary scope names until a patch is available. As a temporary workaround, monitor OAuth client application creations and authorization requests to detect potential malicious activity.

Fix

Related Identifiers

BIT-GITLAB-2021-39881

CVE-2021-39881

Affected Products

Gitlab

Gitlab Ce/Ee

References · 10

• https://nvd.nist.gov/vuln/detail/CVE-2021-39881 · Security Note
• https://cve.org/CVERecord?id=CVE-2021-39881 · Security Note
• https://ubuntu.com/security/CVE-2021-39881 · Vendor Advisory
• https://osv.dev/vulnerability/UBUNTU-CVE-2021-39881 · Vendor Advisory
• https://gitlab.com/gitlab-org/cves/-/blob/master/2021/CVE-2021-39881.json · Vendor Advisory
• https://osv.dev/vulnerability/BIT-gitlab-2021-39881 · Vendor Advisory
• https://osv.dev/vulnerability/CVE-2021-39881 · Vendor Advisory
• https://t.me/cibsecurity/29987 · Telegram Post
• https://hackerone.com/reports/494530 · Note
• https://gitlab.com/gitlab-org/gitlab/-/issues/26695 · Note