simple-git enables running native Git commands from JavaScript. Versions up to and including 3.31.1 allow execution of arbitrary commands through Git option manipulation, bypassing safety checks meant to block dangerous options like -u and --upload-pack. The flaw stems from an incomplete fix for CVE-2022-25860, as Git's flexible option parsing allows numerous character combinations (e.g., -vu, -4u, -nu) to circumvent the regular-expression-based blocklist in the unsafe operations plugin.
Due to the virtually infinite number of valid option variants that Git accepts, a complete blocklist-based mitigation may be infeasible without fully emulating Git's option parsing behavior. This issue has been fixed in version 3.32.0.
Attack Parameters
Attack Vector
Network
Can be exploited remotely
Attack Complexity
High
Difficult to exploit
Privileges Required
None
No privileges needed
User Interaction
None
No user interaction needed
Impact Assessment
Confidentiality
High
Complete data leak
Integrity
High
Complete data modification
Availability
High
Complete denial of service
CVSS Vector v3.1
Weakness Type (CWE)
References 5
https://github.com/steveukx/git-js/blob/789c13ebabcf18ebe0b3a0c88ebb4037dede42e…
security-advisories@github.com
https://github.com/steveukx/git-js/commit/1effd8e5012a5da05a9776512fac3e39b11f2…
security-advisories@github.com
https://github.com/steveukx/git-js/releases/tag/simple-git%403.32.0
security-advisories@github.com
https://github.com/steveukx/git-js/security/advisories/GHSA-jcxm-m3jx-f287
security-advisories@github.com
https://www.cve.org/CVERecord?id=CVE-2022-25860
security-advisories@github.com