Vulnerability Description
There is a defect in the CPython standard library module “mimetypes” where on Windows the default list of known file locations are writable meaning other users can create invalid files to cause MemoryError to be raised on Python runtime startup or have file extensions be interpreted as the incorrect file type. This defect is caused by the default locations of Linux and macOS platforms (such as “/etc/mime.types”) also being used on Windows, where they are user-writable locations (“C:\etc\mime.types”). To work-around this issue a user can call mimetypes.init() with an empty list (“[]”) on Windows platforms to avoid using the default list of known file locations.
Related Weaknesses (CWE)
References
- https://mail.python.org/archives/list/[email protected]/thread/CDXW34
- http://www.openwall.com/lists/oss-security/2025/02/14/8
- https://security.netapp.com/advisory/ntap-20250314-0001/
FAQ
What is CVE-2024-3220?
CVE-2024-3220 is a documented vulnerability. There is a defect in the CPython standard library module “mimetypes” where on Windows the default list of known file locations are writable meaning other users can create invalid files to cause Memory...
How severe is CVE-2024-3220?
CVSS scoring is not yet available for CVE-2024-3220. Check NVD for updates.
Is there a patch for CVE-2024-3220?
Check the references section above for vendor advisories and patch information. Review vendor security bulletins for remediation guidance.