1. Ubuntu Security Notices
  2. USN-5378-1

USN-5378-1: Gzip vulnerability

Publication date

13 April 2022

Overview

Gzip could be made to overwrite arbitrary files.

Releases

Packages

  • gzip - GNU compression utilities

Details

Cleemy Desu Wayo discovered that Gzip incorrectly handled certain
filenames. If a user or automated system were tricked into performing zgrep
operations with specially crafted filenames, a remote attacker could
overwrite arbitrary files.

Cleemy Desu Wayo discovered that Gzip incorrectly handled certain
filenames. If a user or automated system were tricked into performing zgrep
operations with specially crafted filenames, a remote attacker could
overwrite arbitrary files.

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
21.10 impish gzip –  1.10-4ubuntu1.1
20.04 focal gzip –  1.10-0ubuntu4.1
18.04 bionic gzip –  1.6-5ubuntu1.2

Reduce your security exposure

Ubuntu Pro provides ten-year security coverage to 25,000+ packages in Main and Universe repositories, and it is free for up to five machines.

Get Ubuntu Pro

References

Have additional questions?

Talk to a member of the team ›