1. Ubuntu Security Notices
  2. USN-5355-1

USN-5355-1: zlib vulnerability

Publication date

30 March 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

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

Danilo Ramos discovered that zlib incorrectly handled memory when
performing certain deflating 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

After a standard system update you need to reboot your computer to 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
21.10 impish lib64z1 –  1:1.2.11.dfsg-2ubuntu7.1
libx32z1 –  1:1.2.11.dfsg-2ubuntu7.1
lib32z1 –  1:1.2.11.dfsg-2ubuntu7.1
zlib1g –  1:1.2.11.dfsg-2ubuntu7.1
20.04 focal lib64z1 –  1:1.2.11.dfsg-2ubuntu1.3
libx32z1 –  1:1.2.11.dfsg-2ubuntu1.3
lib32z1 –  1:1.2.11.dfsg-2ubuntu1.3
zlib1g –  1:1.2.11.dfsg-2ubuntu1.3
18.04 bionic lib64z1 –  1:1.2.11.dfsg-0ubuntu2.1
libx32z1 –  1:1.2.11.dfsg-0ubuntu2.1
lib32z1 –  1:1.2.11.dfsg-0ubuntu2.1
zlib1g –  1:1.2.11.dfsg-0ubuntu2.1

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References

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