CVE-2011-1269

CVE-2011-1269 is a vulnerability that was discovered in March 2011 and affects the Apache HTTP Server. This vulnerability allows remote attackers to cause a denial of service (DoS) by sending specially crafted requests that trigger an infinite loop in the mod_proxy module of the Apache HTTP Server. The mod_proxy module is responsible for handling requests from clients and forwarding them to other servers. When this vulnerability is exploited, the affected server enters an infinite loop and stops responding to legitimate requests. This can result in a DoS condition that prevents users from accessing the affected website or service. This vulnerability affects all versions of the Apache HTTP Server prior to version 2.2.19, which included a fix for the flaw. CVE-2011-1269 was considered a high-risk vulnerability at the time of its discovery due to the widespread use of the Apache HTTP Server for hosting websites and web applications. Organizations that were affected by this vulnerability were advised to update their Apache HTTP Server installations to the latest version as soon as possible to mitigate the risk of exploitation. In addition, security researchers recommended that organizations implement measures such as rate limiting and traffic filtering to detect and block malicious requests that exploit this vulnerability.