--- title: 'USN-5333-1: Apache HTTP Server vulnerabilities | Ubuntu security notices' description: Ubuntu is an open source software operating system that runs from the desktop, to the cloud, to all your internet connected things. url: https://ubuntu.com/security/notices/USN-5333-1 --- 1. [Ubuntu Security Notices](https://ubuntu.com/security/notices) 2. USN-5333-1 --- # USN-5333-1: Apache HTTP Server vulnerabilities Publication date 17 March 2022 Overview Several security issues were fixed in Apache HTTP Server. Releases [21.10](https://ubuntu.com/security/notices?release=impish) [20.04 LTS](https://ubuntu.com/security/notices?release=focal) [18.04 LTS](https://ubuntu.com/security/notices?release=bionic) --- Open side navigation ## Packages * [apache2](https://ubuntu.com/security/cves?package=apache2) - Apache HTTP server ## Details Chamal De Silva discovered that the Apache HTTP Server mod\_lua module incorrectly handled certain crafted request bodies. A remote attacker could possibly use this issue to cause the server to crash, resulting in a denial of service. ([CVE-2022-22719](https://ubuntu.com/security/CVE-2022-22719)) James Kettle discovered that the Apache HTTP Server incorrectly closed inbound connection when certain errors are encountered. A remote attacker could possibly use this issue to perform an HTTP Request Smuggling attack. ([CVE-2022-22720](https://ubuntu.com/security/CVE-2022-22720)) It was discovered that the Apache HTTP Server incorrectly handled large LimitXMLRequestBody settings on certain platforms. In certain configurations, a remote attacker could use this issue to cause the server to crash, resulting in a denial of service, or possibly execute arbitrary code. ([CVE-2022-22721](https://ubuntu.com/security/CVE-2022-22721)) Ronald Crane... --- Show more ## Update instructions In general, a standard system update will make all the necessary changes. [Learn more about how to get the fixes.](https://ubuntu.com/security/cves/about#security) The problem can be corrected by updating your system to the following package versions: | Ubuntu Release | Package Version | | --- | --- | | 21.10 impish | [apache2](https://launchpad.net/ubuntu/+source/apache2) –  [2.4.48-3.1ubuntu3.3](https://launchpad.net/ubuntu/+source/apache2/2.4.48-3.1ubuntu3.3) | | | | [apache2-bin](https://launchpad.net/ubuntu/+source/apache2) –  [2.4.48-3.1ubuntu3.3](https://launchpad.net/ubuntu/+source/apache2/2.4.48-3.1ubuntu3.3) | | | | 20.04 LTS focal | [apache2](https://launchpad.net/ubuntu/+source/apache2) –  [2.4.41-4ubuntu3.10](https://launchpad.net/ubuntu/+source/apache2/2.4.41-4ubuntu3.10) | | | | [apache2-bin](https://launchpad.net/ubuntu/+source/apache2) –  [2.4.41-4ubuntu3.10](https://launchpad.net/ubuntu/+source/apache2/2.4.41-4ubuntu3.10) | | | | 18.04 LTS bionic | [apache2](https://launchpad.net/ubuntu/+source/apache2) –  [2.4.29-1ubuntu4.22](https://launchpad.net/ubuntu/+source/apache2/2.4.29-1ubuntu4.22) | | | | [apache2-bin](https://launchpad.net/ubuntu/+source/apache2) –  [2.4.29-1ubuntu4.22](https://launchpad.net/ubuntu/+source/apache2/2.4.29-1ubuntu4.22) | | | --- ### 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. [Get Ubuntu Pro](https://ubuntu.com/pro) ## References * [CVE-2022-23943](https://ubuntu.com/security/CVE-2022-23943) * [CVE-2022-22721](https://ubuntu.com/security/CVE-2022-22721) * [CVE-2022-22720](https://ubuntu.com/security/CVE-2022-22720) * [CVE-2022-22719](https://ubuntu.com/security/CVE-2022-22719) ## Related notices * [USN-5333-2](https://ubuntu.com/security/notices/USN-5333-2)