USN-6065-1: css-what vulnerabilities

Releases

• Ubuntu 20.04 LTS
• Ubuntu 18.04 ESM
• Ubuntu 16.04 ESM

Packages

• node-css-what - A CSS selector parser

Details

It was discovered that css-what incorrectly handled certain inputs. If a user
or an automated system were tricked into opening a specially crafted input
file, a remote attacker could possibly use this issue to cause a denial of
service. (CVE-2021-33587, CVE-2022-21222)

Update instructions

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

Ubuntu 20.04

• node-css-what - 3.2.1-1ubuntu0.1~esm1
  Available with Ubuntu Pro

Ubuntu 18.04

• node-css-what - 2.1.0-1+deb10u1build0.18.04.1

Ubuntu 16.04

• node-css-what - 2.1.0-1ubuntu0.16.04.1~esm1
  Available with Ubuntu Pro

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

References

• CVE-2022-21222
• CVE-2021-33587