Ubuntu 21.04 USN-4963-1 Critical: Pillow Denial Of Service Issue

ubuntu

May 19, 2021

Pillow could be made to crash or hang if it opened a specially crafted file.

Summary

Pillow could be made to crash or hang if it opened a specially crafted

file.

Software Description:

- pillow: Python Imaging Library

Details:

It was discovered that Pillow incorrectly handled certain image files. If a

user or automated system were tricked into opening a specially-crafted

file, a remote attacker could cause Pillow to crash or hand, resulting in a

denial of service.

Topics Covered

security advisory denial of service critical software update Ubuntu update instructions software issue Python library Pillow Python Imaging Library

Update Instructions

The problem can be corrected by updating your system to the following
package versions:

Ubuntu 21.04:
  python3-pil                     8.1.2-1ubuntu0.1

Ubuntu 20.10:
  python3-pil                     7.2.0-1ubuntu0.3

Ubuntu 20.04 LTS:
  python3-pil                     7.0.0-4ubuntu0.4

Ubuntu 18.04 LTS:
  python-pil                      5.1.0-1ubuntu0.6
  python3-pil                     5.1.0-1ubuntu0.6

In general, a standard system update will make all the necessary changes.