NCP Network Communication Secure Client 8.11 Build 146, and possibly other versions, allows local users to cause a denial of service (CPU consumption) via a large number of arguments to ncprwsnt.exe, possibly due to a buffer overflow.

NCP Network Communication Secure Client 8.11 Build 146, and possibly other versions, allows local users to cause a denial of service (memory usage and cpu utilization) via a flood of arbitrary UDP datagrams to ports 0 to 65000. NOTE: this issue was reported as a buffer overflow, but that term usually does not apply in flooding attacks.

Client Firewall in NCP Network Communication Secure Client 8.11 Build 146, and possibly other versions, allows local users to bypass firewall program execution rules by replacing an allowed program with an arbitrary program.

The ncprwsnt service in NCP Network Communication Secure Client 8.11 Build 146, and possibly other versions, allows local users to execute arbitrary code by modifying the connect.bat script, which is automatically executed by the service after a connection is established.

The Downloadable RADIUS ACLs feature in Cisco PIX and VPN 3000 concentrators, when creating an ACL on the Cisco Secure Access Control Server (CS ACS), generates a random internal name for an ACL that is also used as a hidden user name and password, which allows remote attackers to gain privileges by sniffing the username from the cleartext portion of a RADIUS session, then using the password to log in to another device that uses CS ACS.

Heap-based buffer overflow in pskcmp.dll in Panda Software Antivirus library allows remote attackers to execute arbitrary code via a crafted ZOO archive.

The SSL/TLS handshaking code in OpenSSL 0.9.7a, 0.9.7b, and 0.9.7c, when using Kerberos ciphersuites, does not properly check the length of Kerberos tickets during a handshake, which allows remote attackers to cause a denial of service (crash) via a crafted SSL/TLS handshake that causes an out-of-bounds read.

The do_change_cipher_spec function in OpenSSL 0.9.6c to 0.9.6k, and 0.9.7a to 0.9.7c, allows remote attackers to cause a denial of service (crash) via a crafted SSL/TLS handshake that triggers a null dereference.

OpenSSL 0.9.6 before 0.9.6d does not properly handle unknown message types, which allows remote attackers to cause a denial of service (infinite loop), as demonstrated using the Codenomicon TLS Test Tool.

Cisco VPN 3000 Concentrator before 2.5.2(F), with encryption enabled, allows remote attackers to cause a denial of service (reload) via a Windows-based PPTP client with the "No Encryption" option set.