PT-2023-31154 · Github · Tj-Actions/Branch-Names

Adnanekhan + 1 · Published 2023-12-04 · Updated 2025-03-17 · CVE-2023-49291

Positive Technologies (AI Summary)

CVSS v3.1

9.3

Critical

Base vector

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

Name of the Vulnerable Software and Affected Versions tj-actions/branch-names versions prior to 7.0.7

Description The tj-actions/branch-names GitHub Actions improperly references the github.event.pull request.head.ref and github.head ref context variables within a GitHub Actions run step. The head ref variable is the branch name and can be used to execute arbitrary code using a specially crafted branch name. An attacker can use this issue to steal secrets from or abuse GITHUB TOKEN permissions.

Recommendations For versions prior to 7.0.7, upgrade to version 7.0.7 to address the issue. As a temporary workaround, consider restricting the use of the github.event.pull request.head.ref and github.head ref context variables within GitHub Actions run steps to minimize the risk of exploitation. Avoid using specially crafted branch names that could be used to inject arbitrary code.

Exploit

Fix

RCE

Weakness Enumeration

CWE-20

Related Identifiers

CVE-2023-49291

GHSA-8V8W-V8XG-79RF

Affected Products

Tj-Actions/Branch-Names

References · 14

• 🔥 https://github.com/CVEProject/cvelistV5/tree/main/cves/2023/49xxx/CVE-2023-49291.json · Exploit
• 🔥 https://github.com/tj-actions/branch-names/security/advisories/GHSA-8v8w-v8xg-79rf · Exploit
• 🔥 https://securitylab.github.com/research/github-actions-untrusted-input · Exploit
• https://github.com/tj-actions/branch-names/commit/726fe9ba5e9da4fcc716223b7994ffd0358af060 · Patch
• https://github.com/tj-actions/branch-names/commit/6c999acf206f5561e19f46301bb310e9e70d8815 · Patch
• https://github.com/tj-actions/branch-names/commit/4923d1ca41f928c24f1c1b3af9daaadfb71e6337 · Patch
• https://nvd.nist.gov/vuln/detail/CVE-2023-49291 · Security Note
• https://osv.dev/vulnerability/CVE-2023-49291 · Vendor Advisory
• https://osv.dev/vulnerability/GHSA-8v8w-v8xg-79rf · Vendor Advisory
• https://github.com/tj-actions/branch-names · Note
• https://t.me/s_e_reborn/5486 · Telegram Post
• https://twitter.com/VulmonFeeds/status/1731850445205704954 · Twitter Post
• https://t.me/true_secator/6845 · Telegram Post
• https://twitter.com/CVEnew/status/1731817467864105466 · Twitter Post