Apache Range Header DoS (CVE-2011-3192)

Remediation

To remediate the Apache Range Header DoS vulnerability (CVE-2011-3192), it is recommended to upgrade to a version of Apache HTTP Server that includes the fix for this issue.

About

The Apache Range Header DoS vulnerability (CVE-2011-3192) is a security flaw that affects earlier versions of the Apache HTTP Server. It allows remote attackers to cause a denial of service by sending a Range request header that identifies multiple overlapping ranges. This can lead to memory and CPU exhaustion, resulting in the server becoming unresponsive or crashing. This vulnerability was actively exploited in the wild in August 2011.

Risks

The risks associated with the Apache Range Header DoS vulnerability include:

1. Denial of Service: Attackers can exploit this vulnerability to exhaust the server’s memory and CPU resources, causing it to become unresponsive or crash. This can result in service disruption and loss of availability for legitimate users.
2. Server Compromise: In some cases, attackers may be able to leverage this vulnerability to gain unauthorized access to the server or execute arbitrary code. This can lead to further compromise of the system and potential data breaches.
3. Loss of Data: If the server crashes or becomes unresponsive due to this vulnerability, there is a risk of data loss or corruption. This can have significant consequences, especially for systems hosting critical or sensitive information.

It is crucial to address this vulnerability promptly to mitigate these risks and ensure the security and stability of the Apache HTTP Server.