[ASA-202105-15] python-babel: arbitrary code execution

[Jonas Witschel]

Arch Linux Security Advisory ASA-202105-15
==========================================

Severity: Medium
Date    : 2021-05-19
CVE-ID  : CVE-2021-20095
Package : python-babel
Type    : arbitrary code execution
Remote  : No
Link    : https://security.archlinux.org/AVG-1894

Summary
=======

The package python-babel before version 2.9.1-1 is vulnerable to
arbitrary code execution.

Resolution
==========

Upgrade to 2.9.1-1.

# pacman -Syu "python-babel>=2.9.1-1"

The problem has been fixed upstream in version 2.9.1.

Workaround
==========

None.

Description
===========

Relative Path Traversal in Babel 2.9.0 allows an attacker to load
arbitrary locale files on disk and execute arbitrary code.

Impact
======

A local attacker could load arbitrary locale files through path
traversal using a crafted locale identifier and execute arbitrary code.

References
==========

https://www.tenable.com/security/research/tra-2021-14
https://github.com/python-babel/babel/pull/782
https://github.com/python-babel/babel/commit/412015ef642bfcc0d8ba8f4d05cdbb6aac98d9b3
https://security.archlinux.org/CVE-2021-20095
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