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Ubuntu 16.04 ESM USN-5078-2: Critical Squashfs-Tools File Overwrite

ubuntu
Calendar Grey September 15, 2021
Dist Ubuntu Esm H88
Security Notice regarding Squashfs-Tools flaw for Ubuntu 16.04 ESM, released on September 15, 2021.
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 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)

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

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

References

https://ubuntu.com/security/notices/USN-5078-2

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

CVE-2021-40153, CVE-2021-41072

Severity
critical
Lowest
Low
Medium
High
Critical

September 15, 2021

Topics%20covered

Topics Covered

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

Package Information

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