Ubuntu 21.10 USN-5378-2 Moderate: XZ Utils File Overwrite Risk

ubuntu

April 13, 2022

XZ Utils could be made to overwrite arbitrary files.

Summary

XZ Utils could be made to overwrite arbitrary files.

Software Description:

- xz-utils: XZ-format compression utilities

Details:

Cleemy Desu Wayo discovered that XZ Utils incorrectly handled certain

filenames. If a user or automated system were tricked into performing

xzgrep operations with specially crafted filenames, a remote attacker could

overwrite arbitrary files.

Topics Covered

security advisory security issue software update file overwrite ubuntu moderate risk xz-utils

Update Instructions

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

Ubuntu 21.10:
  xz-utils                        5.2.5-2ubuntu0.1

Ubuntu 20.04 LTS:
  xz-utils                        5.2.4-1ubuntu1.1

Ubuntu 18.04 LTS:
  xz-utils                        5.2.2-1.3ubuntu0.1

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