USN-5378-2: XZ Utils vulnerability

Releases

• Ubuntu 21.10
• Ubuntu 20.04 LTS
• Ubuntu 18.04 ESM

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.

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

• xz-utils - 5.2.4-1ubuntu1.1

Ubuntu 18.04

• xz-utils - 5.2.2-1.3ubuntu0.1

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

References

• CVE-2022-1271

Related notices

• USN-5378-1: gzip-win32, gzip
• USN-5378-3: liblzma5, liblzma-dev, xzdec, liblzma-doc, xz-utils
• USN-5378-4: gzip