1. Ubuntu Security Notices
  2. USN-5570-1

USN-5570-1: zlib vulnerability

Publication date

17 August 2022

Overview

zlib could be made to crash or run programs if it received specially crafted input.

Releases

Packages

  • zlib - Lossless data-compression library

Details

Evgeny Legerov discovered that zlib incorrectly handled memory when
performing certain inflate operations. An attacker could use this issue
to cause zlib to crash, resulting in a denial of service, or possibly
execute arbitrary code.

Evgeny Legerov discovered that zlib incorrectly handled memory when
performing certain inflate operations. An attacker could use this issue
to cause zlib to crash, resulting in a denial of service, or possibly
execute arbitrary code.

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
18.04 bionic lib64z1 –  1:1.2.11.dfsg-0ubuntu2.2
libx32z1 –  1:1.2.11.dfsg-0ubuntu2.2
lib32z1 –  1:1.2.11.dfsg-0ubuntu2.2
zlib1g –  1:1.2.11.dfsg-0ubuntu2.2
16.04 xenial lib64z1 –  1:1.2.8.dfsg-2ubuntu4.3+esm2  
libx32z1 –  1:1.2.8.dfsg-2ubuntu4.3+esm2  
lib32z1 –  1:1.2.8.dfsg-2ubuntu4.3+esm2  
zlib1g –  1:1.2.8.dfsg-2ubuntu4.3+esm2  
14.04 trusty lib64z1 –  1:1.2.8.dfsg-1ubuntu1.1+esm2  
libx32z1 –  1:1.2.8.dfsg-1ubuntu1.1+esm2  
zlib-bin –  1:1.2.8.dfsg-1ubuntu1.1+esm2  
lib32z1 –  1:1.2.8.dfsg-1ubuntu1.1+esm2  
zlib1g –  1:1.2.8.dfsg-1ubuntu1.1+esm2  

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References

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