CVE-2023-6597

Advisory

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.

Affected package

Affected versions

Fixed versions

Vulnerability changelog

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. See CVE-2023-6597.


MISC:https://github.com/python/cpython/commit/02a9259c717738dfe6b463c44d7e17f2b6d2cb3a: https://github.com/python/cpython/commit/02a9259c717738dfe6b463c44d7e17f2b6d2cb3a
MISC:https://github.com/python/cpython/commit/5585334d772b253a01a6730e8202ffb1607c3d25: https://github.com/python/cpython/commit/5585334d772b253a01a6730e8202ffb1607c3d25
MISC:https://github.com/python/cpython/commit/6ceb8aeda504b079fef7a57b8d81472f15cdd9a5: https://github.com/python/cpython/commit/6ceb8aeda504b079fef7a57b8d81472f15cdd9a5
MISC:https://github.com/python/cpython/commit/81c16cd94ec38d61aa478b9a452436dc3b1b524d: https://github.com/python/cpython/commit/81c16cd94ec38d61aa478b9a452436dc3b1b524d
MISC:https://github.com/python/cpython/commit/8eaeefe49d179ca4908d052745e3bb8b6f238f82: https://github.com/python/cpython/commit/8eaeefe49d179ca4908d052745e3bb8b6f238f82
MISC:https://github.com/python/cpython/commit/d54e22a669ae6e987199bb5d2c69bb5a46b0083b: https://github.com/python/cpython/commit/d54e22a669ae6e987199bb5d2c69bb5a46b0083b
MISC:https://github.com/python/cpython/issues/91133: https://github.com/python/cpython/issues/91133
MISC:https://mail.python.org/archives/list/[email protected]/thread/Q5C6ATFC67K53XFV4KE45325S7NS62LD/: https://mail.python.org/archives/list/[email protected]/thread/Q5C6ATFC67K53XFV4KE45325S7NS62LD/
MLIST:[debian-lts-announce] 20240324 [SECURITY] [DLA 3772-1] python3.7 security update: https://lists.debian.org/debian-lts-announce/2024/03/msg00025.html

Resources

• https://github.com/python/cpython/commit/02a9259c717738dfe6b463c44d7e17f2b6d2cb3a
• https://github.com/python/cpython/commit/5585334d772b253a01a6730e8202ffb1607c3d25
• https://github.com/python/cpython/commit/6ceb8aeda504b079fef7a57b8d81472f15cdd9a5
• https://github.com/python/cpython/commit/81c16cd94ec38d61aa478b9a452436dc3b1b524d
• https://github.com/python/cpython/commit/8eaeefe49d179ca4908d052745e3bb8b6f238f82
• https://github.com/python/cpython/commit/d54e22a669ae6e987199bb5d2c69bb5a46b0083b
• https://github.com/python/cpython/issues/91133
• https://mail.python.org/archives/list/[email protected]/thread/Q5C6ATFC67K53XFV4KE45325S7NS62LD/
• https://lists.debian.org/debian-lts-announce/2024/03/msg00025.html
• https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2023-6597