USN-6729-2: Apache HTTP Server vulnerabilities

The Apache HTTP Server is an essential component for many IT infrastructures, facilitating web services globally. Recent updates have brought attention to new vulnerabilities targeting specifically Ubuntu 16.04 LTS and Ubuntu 18.04 LTS systems. The issued USN-6729-2 update patches several significant security threats that were left addressed by the prior USN-6729-1. Understanding these vulnerabilities is crucial for maintaining the security and integrity of web server environments.

One of the critical security flaws, identified by Orange Tsai, involves improper validation of user input by the Apache HTTP Server. This flaw, tracked as CVE-2023-38709, could potentially allow attackers to execute HTTP request splitting attacks. Such attacks could compromise the security of user data and disrupt the operational integrity of the server.

Analogously, Keran Mu and Jianjun Chen uncovered a similar input validation vulnerability in Apache HTTP Server, which bears the code CVE-2024-24795. This vulnerability could also lead to HTTP request splitting attacks. Both vulnerabilities expose systems to significant risk, emphasizing the necessity for immediate action in the form of updates and patches.

Moreover, a dangerous issue related to the HTTP/2 module in Apache HTTP Server was discovered by Bartek Nowotarski. The flaw, identified as CVE-2024-27316, mainly affects Ubuntu 18.04 LTS and involves the server improperly handling endless continuation frames. This could be exploited by an external actor to force the server to expend excessive resources, effectively leading to a denial of service scenario. Mitigating such risks is critical, as they can contribute to impaired server performance or downtime, adversely affecting business operations and services.

For systems administrators and IT security personnel using Ubuntu 16.04 or Ubuntu 18.04 LTS, it is highly recommended to apply these security patches immediately. Ensuring your systems are up-to-date with the latest patches helps secure your infrastructure from potential threats. For businesses looking for reliable and secure patch management for their Linux servers, consider leveraging the expertise of With automated updates and dedicated support, can help maintain the operational integrity and security of your servers, facilitating a robust defense against both current and future vulnerabilities.