USN-5057-1: Squashfs-Tools vulnerability

Publication date

31 August 2021

Overview

squashfs-tools could be made to overwrite files.


Packages

Details

Etienne Stalmans discovered that Squashfs-Tools mishandled certain malformed SQUASHFS files. An attacker could use this vulnerability to write arbitrary files to the filesystem.

Etienne Stalmans discovered that Squashfs-Tools mishandled certain malformed SQUASHFS files. An attacker could use this vulnerability to write arbitrary files to the filesystem.

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
21.04 hirsute squashfs-tools –  1:4.4-2ubuntu0.1
20.04 focal squashfs-tools –  1:4.4-1ubuntu0.1
18.04 bionic squashfs-tools –  1:4.3-6ubuntu0.18.04.3

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.


Have additional questions?

Talk to a member of the team ›