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Updated XFree86 packages that resolve various security issues and additionally provide a number of bug fixes and enhancements are now available for Red Hat Linux 7.1 and 7.

XFree86 is an implementation of the X Window System providing the core graphical user interface and video drivers. Updated XFree86 packages for Red Hat Linux 7.3 are now available which include several security fixes, bug fixes, enhancements, and driver updates.

Updated XFree86 packages for Red Hat Linux 8.0 are now available which include several security fixes, bug fixes, enhancements, and driver updates.

Updated ypserv packages fixing a denial of service vulnerability are now available.

tcptraceroute is a setuid-root program which drops root privileges after obtaining a file descriptor used for raw packet capture. However, it did not fully relinquish all privileges, and in the event of an exploitable vulnerability, root privileges could be regained.

A number of string handling bugs were found in the packet dissectors in ethereal that can be exploited using specially crafted packets to cause ethereal to consume excessive amounts of memory, crash, or even execute arbitray code.

Updated Netscape 4.8 packages fixing various bugs and vulnerabilities are now available.

Steve Kemp discovered that osh, a shell intended to restrict the actions of the user, contains two buffer overflows, in processing environment variables and file redirections. These vulnerabilities could be used to execute arbitrary code, overriding any restrictions placed on the shell.

webfs, a lightweight HTTP server for static content, contains a buffer overflow whereby a long Request-URI in an HTTP request could cause arbitrary code to be executed.

Steve Kemp discovered several buffer overflows in xbl, a game, which can be triggered by long command line arguments. This vulnerability could be exploited by a local attacker to gain gid 'games'.

Orville Write, a replacement for the standard write(1) command, contains a number of buffer overflows. These could be exploited to gain either gid tty or root privileges, depending on the configuration selected when the package is installed.

eldav, a WebDAV client for Emacs, creates temporary files without taking appropriate security precautions. This vulnerability could be exploited by a local user to create or overwrite files with the privileges of the user running emacs and eldav.

Updated Xpdf packages are available that fix a vulnerability where a malicious PDF document could run arbitrary code.

Precompiled Linux 2.4.21 kernels and source packages are now available for Slackware 9.0 and -current. These provide an improved version of the ptrace fix that had been applied to 2.4.20 in Slackware 9.0 (for example, command line options now appear correctly when root does 'ps ax'), and fix a potential denial of service problem with netfilter.

Several of the packet dissectors in ethereal contain string handling bugs which could be exploited using a maliciously crafted packet to cause ethereal to consume excessive amounts of memory, crash, or execute arbitrary code.

The jnethack package is vulnerable to a buffer overflow exploited via a long '-s' command line option. This vulnerability could be used by an attacker to gain gid 'games' on a system where jnethack is installed.

A Denial Of Service (DoS) vulnerability was discovered in BitchX that would allow a remote attacker to crash BitchX by changing certain channel modes. This vulnerability has been fixed in CVS and patched in the released updates.

Jakob Lell discovered a bug in the 'noroff' script included in noweb whereby a temporary file was created insecurely. During a review, several other instances of this problem were found and fixed. Any of these bugs could be exploited by a local user to overwrite arbitrary files owned by the user invoking the script.

typespeed is a game which challenges the player to type words correctly and quickly. It contains a network play mode which allows players on different systems to play competitively. The network code contains a buffer overflow which could allow a remote attacker to execute arbitrary code under the privileges of the user invoking typespeed, in addition to gid games.

A vulnerability exists in znew, a script included with gzip, that would create temporary files without taking precautions to avoid a symlink attack. Patches have been applied to make use of mktemp to generate unique filenames, and properly make use of noclobber in the script. Likewise, a fix for gzexe which had been applied previously was incomplete. It has been fixed to make full use of mktemp everywhere a temporary file is created.