=========================================================================Ubuntu Security Notice USN-5378-3
April 13, 2022
xz-utils vulnerability
=========================================================================
A security issue affects these releases of Ubuntu and its derivatives:
- Ubuntu 16.04 ESM
- Ubuntu 14.04 ESM
Summary:
XZ Utils could be made to overwrite arbitrary files.
Software Description:
- xz-utils: XZ-format compression utilities
Details:
USN-5378-2 fixed a vulnerability in XZ Utils. This update provides
the corresponding update for Ubuntu 14.04 ESM and 16.04 ESM.
Original advisory details:
Cleemy Desu Wayo discovered that Gzip incorrectly handled certain
filenames. If a user or automated system were tricked into performing zgrep
operations with specially crafted filenames, a remote attacker could
overwrite arbitrary files.
Update instructions:
The problem can be corrected by updating your system to the following
package versions:
Ubuntu 16.04 ESM:
xz-utils 5.1.1alpha+20120614-2ubuntu2.16.04.1+esm1
Ubuntu 14.04 ESM:
xz-utils 5.1.1alpha+20120614-2ubuntu2.14.04.1+esm1
In general, a standard system update will make all the necessary changes.
References:
https://ubuntu.com/security/notices/USN-5378-3
https://ubuntu.com/security/notices/USN-5378-1
CVE-2022-1271
