OpenBSD

The i386 trace-trap handling in OpenBSD 2.4 with DDB enabled allows a local user to cause a denial of service.

IP fragment assembly in OpenBSD 2.4 allows a remote attacker to cause a denial of service by sending a large number of fragmented packets.

cron in OpenBSD 2.5 allows local users to gain root privileges via an argv[] that is not NULL terminated, which is passed to cron's fake popen function.

Vulnerability in OpenBSD 2.6 allows a local user to change interface media configurations.

OpenSSH SSH client before 2.3.0 does not properly disable X11 or agent forwarding, which could allow a malicious SSH server to gain access to the X11 display and sniff X11 events, or gain access to the ssh-agent.

Format string vulnerability in OpenBSD su program (and possibly other BSD-based operating systems) allows local attackers to gain root privileges via a malformed shell.

The IPSEC implementation in OpenBSD 2.7 does not properly handle empty AH/ESP packets, which allows remote attackers to cause a denial of service.

Format string vulnerability in OpenBSD yp_passwd program (and possibly other BSD-based operating systems) allows attackers to gain root privileges a malformed name.

Format string vulnerabilities in eeprom program in OpenBSD, NetBSD, and possibly other operating systems allows local attackers to gain root privileges.

Format string vulnerability in talkd in OpenBSD and possibly other BSD-based OSes allows remote attackers to execute arbitrary commands via a user name that contains format characters.

Format string vulnerability in OpenBSD photurisd allows local users to execute arbitrary commands via a configuration file directory name that contains formatting characters.

Buffer overflow in mopd (Maintenance Operations Protocol loader daemon) allows remote attackers to execute arbitrary commands via a long file name.

OpenSSH does not properly drop privileges when the UseLogin option is enabled, which allows local users to execute arbitrary commands by providing the command to the ssh daemon.

The undocumented semconfig system call in BSD freezes the state of semaphores, which allows local users to cause a denial of service of the semaphore system by using the semconfig call.

The default configuration of SSH allows X forwarding, which could allow a remote attacker to control a client's X sessions via a malicious xauth program.

The SSH protocol server sshd allows local users without shell access to redirect a TCP connection through a service that uses the standard system password database for authentication, such as POP or FTP.

The BSD make program allows local users to modify files via a symlink attack when the -j option is being used.

ip_input.c in BSD-derived TCP/IP implementations allows remote attackers to cause a denial of service (crash or hang) via crafted packets.

An SSH 1.2.27 server allows a client to use the "none" cipher, even if it is not allowed by the server policy.

Buffer overflow in OpenBSD procfs and fdescfs file systems via uio_offset in the readdir() function.

A kernel leak in the OpenBSD kernel allows IPsec packets to be sent unencrypted.

OpenBSD, BSDI, and other Unix operating systems allow users to set chflags and fchflags on character and block devices.

Denial of service in "poll" in OpenBSD.

OpenBSD kernel crash through TSS handling, as caused by the crashme program.

OpenBSD crash using nlink value in FFS and EXT2FS filesystems.

Buffer overflow in OpenBSD ping.

Remote attackers can cause a system crash through ipintr() in ipq in OpenBSD.

A race condition between the select() and accept() calls in NetBSD TCP servers allows remote attackers to cause a denial of service.

Buffer overflow in bootpd on OpenBSD, FreeBSD, and Linux systems via a malformed header type.

The chpass command in OpenBSD allows a local user to gain root access through file descriptor leakage.

Buffer overflow in BNU UUCP daemon (uucpd) through long hostnames.

FreeBSD mmap function allows users to modify append-only or immutable files.

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…

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

The asynchronous I/O facility in 4.4 BSD kernel does not check user credentials when setting the recipient of I/O notification, which allows local users to cause a denial of service by using certain ioctl and fcntl calls to cause the signal to be sent to an arbitrary process ID.

rpc.mountd on Linux, Ultrix, and possibly other operating systems, allows remote attackers to determine the existence of a file on the server by attempting to mount that file, which generates different error messages depending on whether the file exists or not.