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Updated Ethereal packages that fix a number of exploitable security issues are now available.

Hylafax is an Open Source fax server which allows sharing of fax equipment among computers by offering its service to clients by a protocol similar to http://FTP. The SuSE Security Team found a format bug condition during a code review of the hfaxd server. It allows remote attackers to execute arbitrary code as root. However, the bug can not be triggered in hylafax' default configuration.

Jeremy Nelson discovered a remotely exploitable buffer overflow in EPIC4, a popular client for Internet Relay Chat (IRC). A malicious server could craft a reply which triggers the client to allocate a negative amount of memory. This could lead to a denial of service if the client only crashes, but may also lead to executing of arbitrary code under the user id of the chatting user.

Steve Kemp discovered a buffer overflow in the environment variable handling of conquest, a curses based, real-time, multi-player space warfare game, which could lead a local attacker to gain unauthorised access to the group conquest.

Tom Lane discovered a buffer overflow in the to_ascii function in PostgreSQL. This allows remote attackers to execute arbitrary code on the host running the database.

The Fedora Project is a Red Hat-sponsored and community-supported open source project that promotes rapid development of innovative open source software through a collaborative, community effort.

A bug in versions of CUPS prior to 1.1.19 was reported by Paul Mitcheson in the Internet Printing Protocol (IPP) implementation would result in CUPS going into a busy loop, which could result in a Denial of Service (DoS) condition. To be able to exploit this problem, an attacker would need to be able to make a TCP connection to the IPP port (port 631 by default).

Upgraded Apache packages are available for Slackware 8.1, 9.0, 9.1, and -current. These fix local vulnerabilities that could allow users who can create or edit Apache config files to gain additional privileges. Sites running Apache should upgrade to the new packages.

A buffer overflow in mod_alias and mod_rewrite was discovered in Apache versions 1.3.19 and earlier as well as Apache 2.0.47 and earlier. This happens when a regular expression with more than 9 captures is confined. An attacker would have to create a carefully crafted configuration file (.htaccess or httpd.conf) in order to exploit these problems.

Two bugs were discovered that lead to a buffer overflow in PostgreSQL versions 7.2.x and 7.3.x prior to 7.3.4, in the abstract data type (ADT) to ASCII conversion functions. It is believed that, under the right circumstances, an attacker may use this vulnerability to execute arbitrary instructions on the PostgreSQL server.

Updated CUPS packages that fix a problem where CUPS can hang are now available.

Updated fileutils and coreutils packages that close a potential denial of service vulnerability are now available.

Updated CUPS packages that fix a problem where CUPS can hang are now available.

Two vulnerabilities were found in the "tiny" web-server thttpd. The first bug is a buffer overflow that can be exploited remotely to overwrite the EBP register of the stack. Due to memory-alignment of the stack done by gcc 3.x this bug can not be exploited. All thttpd versions mentioned in this advisory are compiled with gcc 3.x and are therefore not exploitable. The other bug occurs in the virtual-hosting code of thttpd. A remote attacker can bypass the virtual-hosting mechanism to read arbitrary files.

Several vulnerabilities have been discovered in thttpd, a tiny HTTP server.

Past couple of weeks have been pretty interesting.

Upgraded fetchmail packages are available for Slackware 8.1, 9.0, 9.1, and -current. These fix a vulnerability where a specially crafted email could crash fetchmail, preventing the user from downloading or forwarding their email.

GDM is the GNOME Display Manager, and is commonly used to provide a graphical login for local users.

A problem was discovered in Apache2 where CGI scripts that output more than 4k of output to STDERR will hang the script's execution which can cause a Denial of Service on the httpd process because it is waiting for more input from the CGI that is not forthcoming due to the locked write() call in mod_cgi.

A bug was discovered in fetchmail 6.2.4 where a specially crafted email message can cause fetchmail to crash.