1. Ubuntu Security Notices
  2. USN-5378-2

USN-5378-2: XZ Utils vulnerability

Publication date

13 April 2022

Overview

XZ Utils could be made to overwrite arbitrary files.

Releases

Packages

  • 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.

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.

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
21.10 impish xz-utils –  5.2.5-2ubuntu0.1
20.04 focal xz-utils –  5.2.4-1ubuntu1.1
18.04 bionic xz-utils –  5.2.2-1.3ubuntu0.1

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References

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