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Updated enscript packages that fix insecure handling of temporary files are available.

Basically, this is the same Security Advisory as DSA 102-1, except that the uploaded binary packages really fix the problem this time. Unfortunately the bugfix from DSA 102-1 wasn't propagated properly due to a packaging bug. While the file parsetime.y was fixed, and yy.tab.c should be generated from it, yy.tab.c from the original source was still used. This has been fixed now.

zen-parse discovered a problem in versions 1.4.2 and 1.4.3 of xchat that could allow a malicious user to send commands to the IRC server they are on which would take advantage of the CTCP PING reply handler in xchat. This could be used for denial of service, channel takeovers, and other similar attacks. The problem exists in 1.6 and 1.8 versions, however it is controlled by the "percascii" variable which defaults to 0. It "percascii" is set to 1, the problem is exploitable. This vulnerability has been fixed upstream in version 1.8.7.

Matthew S. Hallacy discovered that ProFTPD was not forward resolving reverse-resolved hostnames. A remote attacker could exploit this to bypass ProFTPD access controls or have false information logged. Frank Denis discovered that a remote attacker could send malicious commands to the ProFTPD server and it would force the process to consume all CPU and memory resources available to it. This DoS vulnerability could bring the server down with repeated attacks. Finally, Mattias found a segmentation fault problem that is considered by the developers to be unexploitable.

Joost Pol reported a remotely exploitable buffer overflow in the mutt email client. It is recommended that all mutt users upgrade their packages immediately. Update: The previous packages released for 8.x were unable to recall postponed messages due to an incorrect patch. These new packages also provide the compressed folders patch that was unavailable when MDKSA-2002:002 was announced.

uuxqt in Taylor UUCP package does not properly remove dangerous long options, which allows local users to gain uid and gid uucp privileges by calling uux and specifying an alternate configuration file with the --config option.

All versions of stunnel from 3.15 to 3.21c are vulnerable to format string bugs in the functions which implement smtp, pop, and nntp client negotiations. Using stunnel with the "-n service" option and the "-c" client mode option, a malicious server could use the format sting vulnerability to run arbitrary code as the owner of the current stunnel process. Version 3.22 is not vulnerable to this bug.

The 'at' command reads commands from standard input for execution at a later time specified on the command line. If such an execution time is given in a carefully drafted (but wrong) format, the at command may crash as a result of a surplus call to free(). The cause of the crash is a heap corruption that is exploitable under certain circumstances since the /usr/bin/at command is installed setuid root.

zen-parse found a bug in the current implementation of at which leads into a heap corruption vulnerability which in turn could potentially lead into an exploit of the daemon user.

The SuSE Security Team discovered a vulnerability in sudo that can be exploited to obtain root privilege because sudo is installed setuid root. An attacker could trick sudo to log failed sudo calls executing the sendmail (or equivalent mailer) program with root privileges and an environment that is not completely clean. This problem has been fixed upstream by the author in sudo 1.6.4 and it is highly recommended that all users upgrade regardless of what mailer you are using.

Versions of xchat prior to version 1.8.7 contain a vulnerability which allows an attacker to cause a vulnerable client to execute arbitrary IRC server commands as if the vulnerable user had typed them. This security erratum updates xchat to version 1.8.7, which is not vulnerable to this attack.

Pine (version 4.43 and earlier) as released with all currently supported versions of Red Hat Linux (6.2, 7, 7.1, 7.2), contains a URL handling bug. This bug can allow a malicious attacker to cause arbitrary commands embedded in a URL to be executed on the users system upon attempting to view the URL.

This updated sudo package fixes a potential local root exploit.

A number of security-related bugs have been found in Bugzilla version

Updated sudo packages fixing a security problem are available.

New groff packages have been made available that fix an overflow in groff. If the printing system running this is a security issue, it is recommended to update to the new, fixed packages.

Sebastian Krahmer from SuSE found a vulnerability in sudo which could easily lead into a local root exploit.

Larry McVoy found a bug in the packet handling code for the CIPE VPN package: it did not check if a received packet was too short and could crash.

The SuSE Security Team discovered a bug in the sudo program which is installed setuid to root. Attackers may trick "sudo" to log failed sudo invocations executing the sendmail program with root-privileges and not completely cleaned environment. Depending on the installed mail-package this may enable attackers to execute code as root. This is the case for at least the postfix mailer. Other mailers may be exploited in a similar way. This bug has been fixed by having "sudo" invoke the sendmail command with user-privileges instead. Please update your sudo package regardless of the mail-packages you are using. As a temporary workaround you may remove the s-bit from sudo with the "chmod -s `which sudo`" command, which will disable the sudo functionality.

A buffer overflow has been found in the globbing code for glibc. This code which is used to glob patterns for filenames and is commonly used in applications like shells and FTP servers.