Wednesday, September 1, 2021

Ubuntu Security Notice USN-5057-1

Ubuntu Security Notice USN-5057-1
August 31, 2021

squashfs-tools vulnerability
A security issue affects these releases of Ubuntu and its derivatives:

- Ubuntu 21.04
- Ubuntu 20.04 LTS
- Ubuntu 18.04 LTS


squashfs-tools could be made to overwrite files.

Software Description:
- squashfs-tools: Tools to create and modify squashfs filesystems


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:

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

Ubuntu 21.04:
squashfs-tools 1:4.4-2ubuntu0.1

Ubuntu 20.04 LTS:
squashfs-tools 1:4.4-1ubuntu0.1

Ubuntu 18.04 LTS:
squashfs-tools 1:4.3-6ubuntu0.18.04.3

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


Package Information:

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