Distributed Denial of Service Attack Against Several Security Websites
IntelliShield: Applied Mitigation Bulletin
2009 February 09 22:09 GMT
2009 February 16 16:23 GMT
Attacks have ended on these domains and additional information has been released regarding the attacks.
On Friday, February 6, 2009, attackers launched a distributed denial of service (DDoS) attack against several information security-related websites. The attackers used a network consisting of thousands of computers infected with malicious code, also known as a botnet, to flood the domains associated with Immunity, Metasploit, Milw0rm, and Packet Storm.
The DDoS attacks consisted of TCP SYN flood and HTTP GET flood attacks over TCP port 80 and involved hundreds of thousands of IP addresses. At its peak, the attacks consisted of as many as 80,000 connection attempts per second. According to reports, the flooding attacks lasted nearly 12 days on certain domains, with varying traffic rates on each of those days, and subsided February 13, 2009.
These websites provide information about and exploit code for current vulnerabilities. Many information security professionals use information from these sites to assist in securing their networks. The Metasploit website is fully functional now that the attacks have stopped and users should not be experiencing any disruption. The site has released workarounds for users to receive updates for the Metasploit Framework installation if the attacks reoccur.
The security vulnerability applies to the following combinations of products.
Security Activity Bulletin
Original Release Base
Alerts and bulletins on the Cisco Security Intelligence Operations Portal are highlighted by analysts in the
Cisco Threat Operations Center and represent a subset of the comprehensive content that is available through Cisco Security IntelliShield Alert Manager Service.
This customizable threat and vulnerability alert service provides security staff with access to timely, accurate, and credible information about threats and vulnerabilities that may affect their environment.
The urgency and severity ratings of this alert are not tailored to individual users; users may value alerts differently based upon their network configurations and circumstances. THE ALERT, AND INFORMATION CONTAINED THEREIN, ARE PROVIDED ON AN "AS IS" BASIS AND DO NOT IMPLY ANY KIND OF GUARANTEE OR WARRANTY, INCLUDING THE WARRANTIES OF MERCHANTABILITY OR FITNESS FOR A PARTICULAR USE. YOUR USE OF THE ALERT, AND INFORMATION CONTAINED THEREIN, OR MATERIALS LINKED FROM THE ALERT, IS AT YOUR OWN RISK. INFORMATION IN THIS ALERT AND ANY RELATED COMMUNICATIONS IS BASED ON OUR KNOWLEDGE AT THE TIME OF PUBLICATION AND IS SUBJECT TO CHANGE WITHOUT NOTICE. CISCO RESERVES THE RIGHT TO CHANGE OR UPDATE ALERTS AT ANY TIME.