Armageddon (DDoS Botnet) Started Integrating Apache Killer Exploit
The latest version of Denial of Service Bot (DDoS) named Armageddon integrates a relatively new exploit known as Apache Killer. Armageddon is a Russian malware family exclusively designed to launch DDoS attacks. Because it is sold as a toolkit on underground forums, there is more than one Armageddon-powered botnets on the Internet. Aside from the Apache Killer exploit, the latest Armageddon version also incorporates other application-layer DDoS techniques that target popular Internet forum platforms like vBulletin or phpBB, however these are not particularly ground-breaking.
The Apache Killer exploit was released in August 2011. It exploits a vulnerability in the Apache Web server by sending a specially crafted "Range" HTTP header to trigger a denial-of-service condition. The attack is particularly dangerous because it can be successfully executed from a single computer and the entire targeted machine needs to be rebooted in order to recover from it. The vulnerability exploited by Apache Killer is identified as CVE-2011-3192 and was patched in Apache HTTPD 2.2.20, a week after the exploit was publicly released. Apache 2.2.21 contains an improved fix.
Recommendation:-
System administrators should upgrade their Apache servers to the latest available version or should implement known work arounds. "There is an update to the Apache mod_security module that attempts to address this type of attack by filtering requests with 'Range' headers that are too large.
System administrators should upgrade their Apache servers to the latest available version or should implement known work arounds. "There is an update to the Apache mod_security module that attempts to address this type of attack by filtering requests with 'Range' headers that are too large.
-Source (PC World)
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