USN-6358-1: RedCloth vulnerability

Publication date

12 September 2023

Overview

RedCloth could be made to crash if it received specially crafted input.


Packages

Details

It was discovered that RedCloth incorrectly handled certain inputs during
html sanitisation. An attacker could possibly use this issue to cause a
denial of service.

It was discovered that RedCloth incorrectly handled certain inputs during
html sanitisation. An attacker could possibly use this issue to cause a
denial of service.

Update instructions

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

Learn more about how to get the fixes.

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

Ubuntu Release Package Version
23.04 lunar ruby-redcloth –  4.3.2-4ubuntu0.23.04.1
22.04 jammy ruby-redcloth –  4.3.2-4ubuntu0.22.04.1
20.04 focal ruby-redcloth –  4.3.2-3+deb10u1build0.20.04.1
18.04 bionic ruby-redcloth –  4.3.2-3ubuntu0.1~esm1  
16.04 xenial ruby-redcloth –  4.2.9-5ubuntu0.1~esm1  

Reduce your security exposure

Ubuntu Pro provides ten-year security coverage to 25,000+ packages in Main and Universe repositories, and it is free for up to five machines.


Have additional questions?

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