Ubuntu 5078-3: Squashfs-Tools vulnerability | LinuxSecurity.com

Advisories

==========================================================================
Ubuntu Security Notice USN-5078-3
October 13, 2021

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

- Ubuntu 21.04
- Ubuntu 20.04 LTS

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.

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

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

Ubuntu 5078-3: Squashfs-Tools vulnerability

October 13, 2021

Summary

A security issue affects these releases of Ubuntu and its derivatives: - Ubuntu 21.04 - Ubuntu 20.04 LTS 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.

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
Ubuntu Security Notice USN-5078-3

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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