CVE-2011-1980 is a vulnerability that was discovered in 2011 and affects the Apache HTTP Server. This vulnerability allows remote attackers to execute arbitrary code or cause a denial of service (DoS) attack by sending specially crafted requests to the server. The flaw lies in the way the server handles certain HTTP headers, which can be exploited to trigger a buffer overflow.
Exploiting CVE-2011-1980 requires an attacker to send a specially crafted request to an affected Apache server. If successful, the attacker could gain control of the server or cause it to crash, resulting in a DoS attack. This vulnerability has the potential to affect a large number of servers running Apache, which is one of the most popular web servers in use today.
When CVE-2011-1980 was first discovered, the Apache Software Foundation released a patch to address the vulnerability. Server administrators were advised to update their systems as soon as possible to prevent exploitation. It is important for organizations to stay vigilant and keep their software up-to-date in order to mitigate the risk of vulnerabilities like CVE-2011-1980 being exploited.