Paper/Archive/CVE-2023-49291

CVE-2023-49291

tj-actions branch-names — Improper Sanitization of Branch Name Leads to Arbitrary Code Injection

CVSS 9.8 (NVD)9.8 / 10 × 3029.4 Not in CISA KEV+300.0 EPSS percentile 73.3.733 × 2014.7 No public exploit+100.0 SSVC exploitation: unknown+100.0

Description · from the CVE record

tj-actions/branch-names is a Github action to retrieve branch or tag names with support for all events. 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. As a result an attacker can use this vulnerability to steal secrets from or abuse `GITHUB_TOKEN` permissions. This vulnerability has been addressed in version 7.0.7. Users are advised to upgrade. There are no known workarounds for this vulnerability.

Affected

ProductAffectedFixed inSource

branch-names< 7.0.7–CNA

Scores by source

NVD9.8CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H

GitHub_M (CNA)9.3CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:C/C:L/I:H/A:N

References

refgithub.com/tj-actions/branch-names/security/advisories/GHSA-8v8w-v8xg-79rf refgithub.com/tj-actions/branch-names/commit/4923d1ca41f928c24f1c1b3af9daaadfb71e6337 refgithub.com/tj-actions/branch-names/commit/6c999acf206f5561e19f46301bb310e9e70d8815 refgithub.com/tj-actions/branch-names/commit/726fe9ba5e9da4fcc716223b7994ffd0358af060 refsecuritylab.github.com/research/github-actions-untrusted-input