==========================================================================
Ubuntu Security Notice USN-6748-1
April 24, 2024
ruby-sanitize vulnerabilities
==========================================================================
A security issue affects these releases of Ubuntu and its derivatives:
- Ubuntu 23.10
- Ubuntu 22.04 LTS
- Ubuntu 20.04 LTS
Summary:
Several security issues were fixed in Sanitize.
Software Description:
- ruby-sanitize: Allowlist-based HTML and CSS sanitizer
Details:
It was discovered that Sanitize incorrectly handled noscript elements
under certain circumstances. An attacker could possibly use this issue to
execute a cross-site scripting (XSS) attack. This issue only affected
Ubuntu 22.04 LTS. (CVE-2023-23627)
It was discovered that Sanitize incorrectly handled style elements under
certain circumstances. An attacker could possibly use this issue to
execute a cross-site scripting (XSS) attack. (CVE-2023-36823)
Update instructions:
The problem can be corrected by updating your system to the following
package versions:
Ubuntu 23.10:
   ruby-sanitize                   6.0.0-1.1ubuntu0.23.10.1
Ubuntu 22.04 LTS:
   ruby-sanitize                   6.0.0-1ubuntu0.1
Ubuntu 20.04 LTS:
   ruby-sanitize                   4.6.6-2.1~0.20.04.2
In general, a standard system update will make all the necessary changes.
References:
   https://ubuntu.com/security/notices/USN-6748-1
   CVE-2023-23627, CVE-2023-36823
Package Information:
   https://launchpad.net/ubuntu/+source/ruby-sanitize/6.0.0-1.1ubuntu0.23.10.1
   https://launchpad.net/ubuntu/+source/ruby-sanitize/6.0.0-1ubuntu0.1
   https://launchpad.net/ubuntu/+source/ruby-sanitize/4.6.6-2.1~0.20.04.2