The web administration interface (mainApp) to Cisco IDS before 4.1(5c), and IPS 5.0 before 5.0(6p1) and 5.1 before 5.1(2) allows remote attackers to cause a denial of service (unresponsive device) via a crafted SSLv2 Client Hello packet.
https://exchange.xforce.ibmcloud.com/vulnerabilities/29056
http://www.vupen.com/english/advisories/2006/3721
http://www.securityfocus.com/bid/20124
http://www.kb.cert.org/vuls/id/642076
http://www.cisco.com/warp/public/707/cisco-sa-20060920-ips.shtml