An issue was found in the CPython tempfile.TemporaryDirectory class affecting versions 3.12.2, 3.11.8, 3.10.13, 3.9.18, and 3.8.18 and prior.

The tempfile.TemporaryDirectory class would dereference symlinks during cleanup of permissions-related errors. This means users which can run privileged programs are potentially able to modify permissions of files referenced by symlinks in some circumstances.

*References*

• CVE: https://www.cve.org/CVERecord?id=CVE-2023-6597
• Patch: https://github.com/python/cpython/pull/99930
• Issue: https://github.com/python/cpython/issues/91133