IBM AIX 430 does not properly unlock IPPMTU_LOCK, which allows remote attackers to cause a denial of service (hang) via Path Maximum Transmit Unit (PMTU) IP packets.
Buffer overflow in login in various System V based operating systems allows remote attackers to execute arbitrary commands via a large number of arguments through services such as telnet and rlogin.
IBM HACMP 4.4 allows remote attackers to cause a denial of service via a completed TCP connection to HACMP ports (e.g., using a port scan) that does not send additional data, which causes a failure in snmpd.