Zero-day vulnerability in Apache HTTP Server

Resource exhaustion

The vulnerability is known as "Apache Killer".

Vulnerability details

Advisory: SB2011082301 - Denial of service in Apache HTTP Server

Vulnerable component: Apache HTTP Server

CVE-ID: CVE-2011-3192

CVSSv3 score: CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:C/C:N/I:N/A:H/E:F/RL:O/RC:C

CWE-ID: CWE-400 - Uncontrolled Resource Consumption ('Resource Exhaustion')


The vulnerability allows a remote attacker to cause DoS conditions on the target system.

The weakness exists due to an error in the ByteRange filter when processing malicious requests in Apache HTTP server. A remote attacker can send a specially crafted HTTP request containing an overly large Range header, exhaust all available memory resources and trigger the application to crash.

Successful exploitation of the vulnerability results in denial service on the vulnerable system.

Note: the vulnerability was being actively exploited.

Public Exploits: