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Ubuntu 20.04 LTS: USN-5227-3 Critical: Pillow Denial of Service Threat

ubuntu
Calendar Grey October 24, 2022
Dist Ubuntu Esm H88
The Ubuntu Security Notice USN-5227-3 pertains to an unfinished resolution in the Pillow library impacting several LTS iterations of Ubuntu.
An incomplete fix was discovered in Pillow.

Summary

An incomplete fix was discovered in Pillow.

Software Description:

- pillow: Python Imaging Library

Details:

USN-5227-1 fixed vulnerabilities in Pillow. It was discovered that the fix

for CVE-2022-22817 was incomplete. This update fixes the problem.

Original advisory 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 hang, resulting in a denial

of service. (CVE-2021-23437)

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, resulting in a denial

of service. This issue ony affected Ubuntu 18.04 LTS, Ubuntu 20.04 LTS, and

Ubuntu 21.04. (CVE-2021-34552)

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

user or autom...

Read the Full Advisory

Topics%20covered

Topics Covered

security advisory denial of service critical issue ubuntu image processing pillow

Update Instructions

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

Ubuntu 20.04 LTS:
   python3-pil                     7.0.0-4ubuntu0.6

Ubuntu 18.04 LTS:
   python-pil                      5.1.0-1ubuntu0.8
   python3-pil                     5.1.0-1ubuntu0.8

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

References

https://ubuntu.com/security/notices/USN-5227-3

https://ubuntu.com/security/notices/USN-5227-1

CVE-2022-22817

Severity
critical
Lowest
Low
Medium
High
Critical

October 24, 2022

Topics%20covered

Topics Covered

security advisory denial of service critical issue ubuntu image processing pillow

Package Information

https://launchpad.net/ubuntu/+source/pillow/7.0.0-4ubuntu0.6
https://launchpad.net/ubuntu/+source/pillow/5.1.0-1ubuntu0.8

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