USN-6358-1: RedCloth vulnerability

Published Sep 12, 2023
·
Updated

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.

Affected Software

10 affected componentsFixes available
All of the following
ubuntu/ruby-redcloth<4.3.2-4ubuntu0.23.04.1
4.3.2-4ubuntu0.23.04.1
Ubuntu Ubuntu=23.04
All of the following
ubuntu/ruby-redcloth<4.3.2-4ubuntu0.22.04.1
4.3.2-4ubuntu0.22.04.1
Ubuntu Ubuntu=22.04
All of the following
ubuntu/ruby-redcloth<4.3.2-3+deb10u1build0.20.04.1
4.3.2-3+deb10u1build0.20.04.1
Ubuntu Ubuntu=20.04
All of the following
ubuntu/ruby-redcloth<4.3.2-3ubuntu0.1~esm1
4.3.2-3ubuntu0.1~esm1
Ubuntu Ubuntu=18.04
All of the following
ubuntu/ruby-redcloth<4.2.9-5ubuntu0.1~esm1
4.2.9-5ubuntu0.1~esm1
Ubuntu Ubuntu=16.04

Event History

Sep 12, 2023
Advisory Published
via Ubuntu·12:00 AM

Child vulnerabilities

Contains the following vulnerabilities.

Frequently Asked Questions

1

What is the vulnerability ID?

The vulnerability ID is USN-6358-1.

2

What is the title of the vulnerability?

The title of the vulnerability is RedCloth vulnerability.

3

What is the description of the vulnerability?

The RedCloth vulnerability is related to incorrect handling of certain inputs during html sanitization, which could potentially lead to a denial of service attack.

4

Which software is affected by this vulnerability?

The vulnerability affects the following software: Ubuntu 23.04 with ruby-redcloth version 4.3.2-4ubuntu0.23.04.1, Ubuntu 22.04 with ruby-redcloth version 4.3.2-4ubuntu0.22.04.1, Ubuntu 20.04 with ruby-redcloth version 4.3.2-3+deb10u1build0.20.04.1, Ubuntu 18.04 with ruby-redcloth version 4.3.2-3ubuntu0.1~esm1, and Ubuntu 16.04 with ruby-redcloth version 4.2.9-5ubuntu0.1~esm1.

5

How can I fix the RedCloth vulnerability?

To fix the RedCloth vulnerability, you should update the ruby-redcloth package to the specified versions: 4.3.2-4ubuntu0.23.04.1 for Ubuntu 23.04, 4.3.2-4ubuntu0.22.04.1 for Ubuntu 22.04, 4.3.2-3+deb10u1build0.20.04.1 for Ubuntu 20.04, 4.3.2-3ubuntu0.1~esm1 for Ubuntu 18.04, and 4.2.9-5ubuntu0.1~esm1 for Ubuntu 16.04.

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