1. Ubuntu Security Notices
  2. USN-5078-2

USN-5078-2: Squashfs-Tools vulnerabilities

Publication date

15 September 2021

Overview

Squashfs-Tools could be made to overwrite files.

Releases

Packages

Details

USN-5078-1 fixed several vulnerabilities in Squashfs-Tools.
This update provides the corresponding update for Ubuntu 16.04 ESM.

Original advisory 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. (CVE-2021-40153)

Richard Weinberger discovered that Squashfs-Tools mishandled certain
malformed SQUASHFS files. An attacker could use this vulnerability to
write arbitrary files to the filesystem. (CVE-2021-41072)

USN-5078-1 fixed several vulnerabilities in Squashfs-Tools.
This update provides the corresponding update for Ubuntu 16.04 ESM.

Original advisory 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. (CVE-2021-40153)

Richard Weinberger discovered that Squashfs-Tools mishandled certain
malformed SQUASHFS files. An attacker could use this vulnerability to
write arbitrary files to the filesystem. (CVE-2021-41072)

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
16.04 xenial squashfs-tools –  1:4.3-3ubuntu2.16.04.3+esm1  

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References

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