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Ubuntu 21.04, 20.04 LTS: 5078-3 Critical: Squashfs-Tools File Overwrite

ubuntu
Calendar Grey October 13, 2021
Dist Ubuntu Esm H88
Severe squashfs-tools vulnerability puts Ubuntu users at risk of file replacement. Ensure your system is updated to safeguard against potential exploits.
Squashfs-Tools could be made to overwrite files.

Summary

Squashfs-Tools could be made to overwrite files.

Software Description:

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

Details:

USN-5078-1 fixed a vulnerability in Squashfs-Tools. That update was

incomplete and could still result in Squashfs-Tools mishandling certain

malformed SQUASHFS files. This update fixes the problem.

We apologize for the inconvenience.

Original advisory details:

Richard Weinberger discovered that Squashfs-Tools mishandled certain

malformed SQUASHFS files. An attacker could use this vulnerability to

write arbitrary files to the filesystem.

Topics%20covered

Topics Covered

security advisory update critical file overwrite ubuntu malformed files squashfs-tools

Update Instructions

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

Ubuntu 21.04:
  squashfs-tools                  1:4.4-2ubuntu0.3

Ubuntu 20.04 LTS:
  squashfs-tools                  1:4.4-1ubuntu0.3

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

References

https://ubuntu.com/security/notices/USN-5078-3

https://ubuntu.com/security/notices/USN-5078-1

CVE-2021-41072

Severity
critical
Lowest
Low
Medium
High
Critical

October 13, 2021

Topics%20covered

Topics Covered

security advisory update critical file overwrite ubuntu malformed files squashfs-tools

Package Information

https://launchpad.net/ubuntu/+source/squashfs-tools/1:4.4-2ubuntu0.3
https://launchpad.net/ubuntu/+source/squashfs-tools/1:4.4-1ubuntu0.3

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