========================================================================== Ubuntu Security Notice USN-5198-1 December 16, 2021 htmldoc vulnerability ========================================================================== A security issue affects these releases of Ubuntu and its derivatives: - Ubuntu 21.04 - Ubuntu 20.04 LTS Summary: HTMLDOC could be made to crash if it received specially crafted input. Software Description: - htmldoc: HTML processor that generates indexed HTML, PS, and PDF Details: It was discovered that HTMLDOC improperly handled malformed URIs from an input html file. An attacker could use this to cause a denial of service. Update instructions: The problem can be corrected by updating your system to the following package versions: Ubuntu 21.04: htmldoc 1.9.11-2ubuntu0.1 htmldoc-common 1.9.11-2ubuntu0.1 Ubuntu 20.04 LTS: htmldoc 1.9.7-1ubuntu0.2 htmldoc-common 1.9.7-1ubuntu0.2 In general, a standard system update will make all the necessary changes. References: https://ubuntu.com/security/notices/USN-5198-1 CVE-2021-23180 Package Information: https://launchpad.net/ubuntu/+source/htmldoc/1.9.11-2ubuntu0.1 https://launchpad.net/ubuntu/+source/htmldoc/1.9.7-1ubuntu0.2