REDHAT-BUG-2276518: High severity Python CPython vulnerability
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.
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://lists.debian.org/debian-lts-announce/2024/03/msg00025.html https://mail.python.org/archives/list/security-announce@python.org/thread/Q5C6ATFC67K53XFV4KE45325S7NS62LD/
Affected Software
Event History
Frequently Asked Questions
What is the severity of REDHAT-BUG-2276518?
The severity of REDHAT-BUG-2276518 is considered critical due to the potential for privilege escalation.
How do I fix REDHAT-BUG-2276518?
To fix REDHAT-BUG-2276518, update CPython to a version later than 3.12.1, 3.11.7, 3.10.13, 3.9.18, or 3.8.18.
Which versions of CPython are affected by REDHAT-BUG-2276518?
The affected versions of CPython are 3.12.1, 3.11.7, 3.10.13, 3.9.18, and 3.8.18 and prior.
What type of issue is REDHAT-BUG-2276518 related to?
REDHAT-BUG-2276518 is related to a permissions-related error in the tempfile.TemporaryDirectory class.
What should users be aware of regarding REDHAT-BUG-2276518?
Users should be aware that it can allow for dereferencing symlinks during cleanup processes, potentially leading to security vulnerabilities.