USN-6373-1: gawk vulnerability

Releases

• Ubuntu 22.04 LTS
• Ubuntu 20.04 LTS
• Ubuntu 18.04 ESM
• Ubuntu 16.04 ESM
• Ubuntu 14.04 ESM

Packages

• gawk - GNU awk, a pattern scanning and processing language

Details

It was discovered that gawk could be made to read out of bounds when
processing certain inputs. If a user or an automated system were tricked
into opening a specially crafted input, an attacker could possibly use
this issue to cause a denial of service.

Update instructions

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

Ubuntu 22.04

• gawk - 1:5.1.0-1ubuntu0.1

Ubuntu 20.04

• gawk - 1:5.0.1+dfsg-1ubuntu0.1

Ubuntu 18.04

• gawk - 1:4.1.4+dfsg-1ubuntu0.1~esm1
  Available with Ubuntu Pro

Ubuntu 16.04

• gawk - 1:4.1.3+dfsg-0.1ubuntu0.1~esm1
  Available with Ubuntu Pro

Ubuntu 14.04

• gawk - 1:4.0.1+dfsg-2.1ubuntu2+esm1
  Available with Ubuntu Pro

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

References

• CVE-2023-4156