Local file modification via umask-bypassing chmod
Published Jan 20, 2025 · Updated Jan 21, 2025
Improper file permissions in GitoxideLabs gitoxide before 0.17.0 allow local users to modify executable worktree files. In gix_worktree_state::checkout, checkout::entry::finalize_entry passes mode 0777 to set_permissions after file creation, so the process umask cannot remove group and other write bits. Exploitation requires a Unix-like host, an executable repository file, the nonexclusive checkout path, and another account able to traverse the worktree.
Summary
What happened
Improper file permissions in GitoxideLabs gitoxide before 0.17.0 allow local users to modify executable worktree files. In gix_worktree_state::checkout, checkout::entry::finalize_entry passes mode 0777 to set_permissions after file creation, so the process umask cannot remove group and other write bits. Exploitation requires a Unix-like host, an executable repository file, the nonexclusive checkout path, and another account able to traverse the worktree.
The record
- CVE
- CVE-2025-22620
- Published
- Jan 20, 2025
- Updated
- Jan 21, 2025
- Vendor
- GitoxideLabs
- Product
- gitoxide
- Classifications
- CWE-687, CWE-281
- Attack vector
- local
- Privileges
- authenticated
Timeline
How it unfolded
- Jan 20, 2025CVE publishedPublication date reported by the CVE source.
- Jan 21, 2025Record updatedLatest update available in the CVE record.
Exploitability
Present is not the same as exploitable
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Is a vulnerable build present?
Compare these published version ranges with your installed build and any vendor patches.
- Affected versionversion=< 0.17.0
What conditions does exploitation require?
What is affected?
Published CVSS scores
CVSS describes severity. EPSS estimates exploitation probability.
Attacks
What attackers are doing with it
Daily unique IPs observed by Shadowserver honeypots for known exploited vulnerabilities (KEVs). Missing observations do not establish an absence of attacks.
Weakness, pattern, technique
Public exploit references
- Upstream gix-worktree-state checkout proof of conceptproof of concept · demonstrated
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Technologies
Your stack
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Your stack
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