CVE-2023-6597

Description

An issue was found in the CPython `tempfile.TemporaryDirectory` class affecting versions 3.12.1, 3.11.7, 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.

CVSS breakdown

Affected products

• Python Software Foundation / CPython0 – 3.8.19
• Python Software Foundation / CPython3.9.0 – 3.9.19
• Python Software Foundation / CPython3.10.0 – 3.10.14
• Python Software Foundation / CPython3.11.0 – 3.11.8
• Python Software Foundation / CPython3.12.0 – 3.12.1
• Python Software Foundation / CPython3.13.0a1 – 3.13.0a3

References

• PATCHhttps://github.com/python/cpython/commit/81c16cd94ec38d61aa478b9a452436dc3b1b524d
• PATCHhttps://github.com/python/cpython/commit/6ceb8aeda504b079fef7a57b8d81472f15cdd9a5
• PATCHhttps://github.com/python/cpython/commit/5585334d772b253a01a6730e8202ffb1607c3d25
• PATCHhttps://github.com/python/cpython/commit/8eaeefe49d179ca4908d052745e3bb8b6f238f82
• PATCHhttps://github.com/python/cpython/commit/d54e22a669ae6e987199bb5d2c69bb5a46b0083b
• PATCHhttps://github.com/python/cpython/commit/02a9259c717738dfe6b463c44d7e17f2b6d2cb3a
• MISChttps://github.com/python/cpython/issues/91133
• MISChttps://mail.python.org/archives/list/security-announce@python.org/thread/Q5C6ATFC67K53XFV4KE45325S7NS62LD/
• MAILING_LISThttps://lists.debian.org/debian-lts-announce/2024/03/msg00025.html
• MAILING_LISThttp://www.openwall.com/lists/oss-security/2024/03/20/5
• MAILING_LISThttps://lists.fedoraproject.org/archives/list/package-announce@lists.fedoraproject.org/message/T3IGRX54M7RNCQOXVQO5KQKTGWCOABIM/
• MAILING_LISThttps://lists.fedoraproject.org/archives/list/package-announce@lists.fedoraproject.org/message/U5VHWS52HGD743C47UMCSAK2A773M2YE/