CVE-2007-1747 is a vulnerability that affects the Apache web server software. This vulnerability is caused by a flaw in the processing of chunked HTTP requests, which can allow an attacker to execute arbitrary code on the affected system or cause a denial-of-service (DoS) attack. The vulnerability was first reported in March 2007 and assigned CVE-2007-1747.
The vulnerability was discovered by security researchers who found that an attacker could send specially crafted chunked requests to the Apache server. The flaw in the processing of these requests could result in a buffer overflow, allowing the attacker to execute arbitrary code or crash the server. The severity of the vulnerability was rated as critical, and patches were released by the Apache Software Foundation soon after its discovery.
In the months following the discovery of CVE-2007-1747, several attacks using this vulnerability were reported in the wild. These attacks targeted vulnerable Apache servers, exploiting the flaw to gain unauthorized access to sensitive information or launch DoS attacks. The Apache Software Foundation advised all users of the affected software versions to update their installations immediately to avoid being affected by this vulnerability.