Cisco IPS Sensor Software 5.1\(1\)

The Cisco Intrusion Prevention System (IPS) and IOS with Firewall/IPS Feature Set do not properly handle certain full-width and half-width Unicode character encodings, which might allow remote attackers to evade detection of HTTP traffic.

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.

The device driver for Intel-based gigabit network adapters in Cisco Intrusion Prevention System (IPS) 5.1(1) through 5.1(p1), as installed on various Cisco Intrusion Prevention System 42xx appliances, allows remote attackers to cause a denial of service (kernel panic and possibly network outage) via a crafted IP packet.