A python-pillow security update has been released for Arch Linux.

ASA-202107-26: python-pillow: arbitrary code execution

Arch Linux Security Advisory ASA-202107-26
=========================================
Severity: Medium
Date : 2021-07-14
CVE-ID : CVE-2021-34552
Package : python-pillow
Type : arbitrary code execution
Remote : Yes
Link :   https://security.archlinux.org/AVG-2150

Summary
======
The package python-pillow before version 8.3.0-1 is vulnerable to
arbitrary code execution.

Resolution
=========
Upgrade to 8.3.0-1.

# pacman -Syu "python-pillow>=8.3.0-1"

The problem has been fixed upstream in version 8.3.0.

Workaround
=========
None.

Description
==========
Pillow through 8.2.0 allows an attacker to pass controlled parameters
directly into a convert function to trigger a buffer overflow in
Convert.c.

Impact
=====
Converting a crafted image file could lead to arbitrary code execution.

References
=========
  https://pillow.readthedocs.io/en/stable/releasenotes/8.3.0.html#buffer-overflow
  https://github.com/python-pillow/Pillow/pull/5567
  https://github.com/python-pillow/Pillow/commit/518ee3722a99d7f7d890db82a20bd81c1c0327fb
  https://security.archlinux.org/CVE-2021-34552