Showing headlines posted by dave

A key validation bug which results in all user IDs on a given key being treated with the validity of the most-valid user ID on that key has been fixed with the release of GnuPG 1.2.2.

An integer overflow in the xdrmem_getbytes() function found in the glibc library has been fixed. This could allow a remote attacker to execute arbitrary code by exploiting RPC service that use xdrmem_getbytes(). None of the default RPC services provided by Slackware appear to use this function, but third-party applications may make use of it.

New BitchX packages are available to fix security problems found by Timo Sirainen. BitchX is an IRC (Internet Relay Chat) client. Under certain circumstances, a malicious IRC server could cause BitchX to crash, or possibly to run arbitrary code as the user running BitchX.

New EPIC4 packages are available to fix security problems found by Timo Sirainen. EPIC4 is an IRC (Internet Relay Chat) client. Under certain circumstances, a malicious IRC server could cause EPIC4 to crash, or possibly to run arbitrary code as the user running EPIC4.

Karol Lewandowski discovered a problem with psbanner, a printer filter that creates a PostScript format banner. psbanner creates a temporary file for debugging purposes when it is configured as a filter, and does not check whether or not this file already exists or is a symlink. The filter will overwrite this file, or the file it is pointing to (if it is a symlink) with its current environment and called arguments with the user id that LPRng is running as.

A buffer overflow was discovered in the lpr printer spooling system that can be exploited by a local user to gain root privileges. This can be done even if the printer is configured properly.

A vulnerability in cdrecord was discovered that can be used to obtain root access because Mandrake Linux ships with the cdrecord binary suid root and sgid cdwriter.

Updated gnupg packages correcting a bug in the GnuPG key validation functions are now available.

Timo Sirainen discovered several problems in BitchX, a popular client for Internet Relay Chat (IRC). A malicious server could craft special reply strings, triggering the client to write beyond buffer boundaries or 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.

New lv packages that fix the possibility of local root exploit are now available.

Paul Szabo discovered bugs in three scripts included in the sendmail package where temporary files were created insecurely (expn, checksendmail and doublebounce.pl). These bugs could allow an attacker to gain the privileges of a user invoking the script (including root).

CAN-2003-0073: The mysql package contains a bug whereby dynamically allocated memory is freed more than once, which could be deliberately triggered by an attacker to cause a crash, resulting in a denial of service condition. In order to exploit this vulnerability, a valid username and password combination for access to the MySQL server is required.

Leonard Stiles discovered that lv, a multilingual file viewer, would read options from a configuration file in the current directory. Because such a file could be placed there by a malicious user, and lv configuration options can be used to execute commands, this represented a security vulnerability. An attacker could gain the privileges of the user invoking lv, including root.

A vulnerability in cdrecord was discovered that can be used to obtain root access because Mandrake Linux ships with the cdrecord binary suid root and sgid cdwriter.

Updated tcpdump packages that correctly drop privileges on startup are now available.

In MySQL 3.23.55 and earlier, MySQL would create world-writeable files and allow mysql users to gain root privileges by using the "SELECT * INTO OUTFILE" operator to overwrite a configuration file, which could cause mysql to run as root upon restarting the daemon.

A vulnerability was discovered in xinetd where memory was allocated and never freed if a connection was refused for any reason. Because of this bug, an attacker could crash the xinetd server, making unavailable all of the services it controls. Other flaws were also discovered that could cause incorrect operation in certain strange configurations.

Updated kernel packages that fix a remote denial of service vulnerability in the TCP/IP stack, and a local privilege vulnerability, are now available.

Updated xinetd packages that fix a security vulnerability are now avaliable.

This erratum provides updated KDE packages to resolve two security issues.