USN-6756-1: less vulnerability

Releases

• Ubuntu 24.04 LTS
• Ubuntu 23.10
• Ubuntu 22.04 LTS
• Ubuntu 20.04 LTS
• Ubuntu 18.04 ESM
• Ubuntu 16.04 ESM
• Ubuntu 14.04 ESM

Packages

• less - pager program similar to more

Details

It was discovered that less mishandled newline characters in file names. If
a user or automated system were tricked into opening specially crafted
files, an attacker could possibly use this issue to execute arbitrary
commands on the host.

Update instructions

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

Ubuntu 24.04

• less - 590-2ubuntu2.1

Ubuntu 23.10

• less - 590-2ubuntu0.23.10.2

Ubuntu 22.04

• less - 590-1ubuntu0.22.04.3

Ubuntu 20.04

• less - 551-1ubuntu0.3

Ubuntu 18.04

• less - 487-0.1ubuntu0.1~esm2
  Available with Ubuntu Pro

Ubuntu 16.04

• less - 481-2.1ubuntu0.2+esm2
  Available with Ubuntu Pro

Ubuntu 14.04

• less - 458-2ubuntu0.1~esm1
  Available with Ubuntu Pro

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

References

• CVE-2024-32487