USN-6182-1: pngcheck vulnerabilities

Publication date

21 June 2023

Overview

Several security issues were fixed in pngcheck.


Packages

  • pngcheck - Verifies the integrity of PNG, JNG and MNG files

Details

It was discovered that pngcheck incorrectly handled certain inputs. If a
user or an automated system were tricked into opening a specially crafted
input file, a remote attacker could possibly use this issue to cause a
denial of service.

It was discovered that pngcheck incorrectly handled certain inputs. If a
user or an automated system were tricked into opening a specially crafted
input file, a remote attacker could possibly use this issue to cause a
denial of service.

Update instructions

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

Learn more about how to get the fixes.

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

Ubuntu Release Package Version
20.04 focal pngcheck –  2.3.0-7ubuntu0.20.04.1
18.04 bionic pngcheck –  2.3.0-7ubuntu0.18.04.1~esm1  
16.04 xenial pngcheck –  2.3.0-7ubuntu0.16.04.1~esm1  

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