Buffer overflow in lpr, as used in BSD-based systems including Linux, allows local users to execute arbitrary code as root via a long -C (classification) command line option.

Arbitrary command execution via metamail package using message headers, when user processes attacker's message using metamail.

Buffer overflow in Xt library of X Windowing System allows local users to execute commands with root privileges.

Buffer overflow of rlogin program using TERM environmental variable.

IP fragmentation denial of service in FreeBSD allows a remote attacker to cause a crash.

TCP RST denial of service in FreeBSD.

Vacation program allows command execution by remote users through a sendmail command.

File creation and deletion, and remote execution, in the BSD line printer daemon (lpd).

Listening TCP ports are sequentially allocated, allowing spoofing attacks.

pcnfsd (aka rpc.pcnfsd) allows local users to change file permissions, or execute arbitrary commands through arguments in the RPC call.

Buffer overflow in rwhod on AIX and other operating systems allows remote attackers to execute arbitrary code via a UDP packet with a long hostname.

Sendmail decode alias can be used to overwrite sensitive files.

Sendmail allows local users to write to a file and gain group permissions via a .forward or :include: file.

Local users can start Sendmail in daemon mode and gain root privileges.

Buffer overflow and denial of service in Sendmail 8.7.5 and earlier through GECOS field gives root access to local users.

The suidperl and sperl program do not give up root privileges when changing UIDs back to the original users, allowing root access.

Buffer overflow in Vixie Cron library up to version 3.0 allows local users to obtain root access via a long environmental variable.

Buffer overflow in FreeBSD lpd through long DNS hostnames.

mmap function in BSD allows local attackers in the kmem group to modify memory through devices.

The system configuration control (sysctl) facility in BSD based operating systems OpenBSD 2.2 and earlier, and FreeBSD 2.2.5 and earlier, does not properly restrict source routed packets even when the (1) dosourceroute or (2) forwarding variables are set, which allows remote attackers to spoof TCP connections.