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Several potential stack overflow vulnerabilities affect the ISC DHCPD server. This advisory provides fixed packages for Red Hat Linux 8.0.

Updated MySQL packages are available for Red Hat Linux 7, 7.1, 7.2, 7.3, and 8.0 which fix security vulnerabilities found in the MySQL server.

The advisory DSA 229-1 contained a typo in one file which could cause certain installations to fail suddenly.

Jouko Pynnonen discovered a probem with IMP, a web based IMAP mail program. Using carefully crafted URLs a remote attacker is able to inject SQL code into SQL queries without proper user authentication. Even though results of SQL queries aren't directly readable from the screen, an attacker might. update his mail signature to contain wanted query results and then view it on the preferences page of IMP.

A review was completed by the SuSE Security Team on the OpenLDAP server software, and this audit revealed several buffer overflows and other bugs that remote attackers could exploit to gain unauthorized access to the system running the vulnerable OpenLDAP servers. Additionally, various locally exploitable bugs in the OpenLDAP v2 libraries have been fixed as well.

A vulnerability was discovered by Jan Knutar in leafnode that Mark Brown pointed out could be used in a Denial of Service attack. This vulnerability causes leafnode to go into an infinite loop with 100% CPU use when an article that has been crossposed to several groups, one of which is the prefix of another, is requested by it's Message-ID.

Updated PostgreSQL packages are available for Red Hat Linux 7.3 and 8.0. These packages correct several security and other bugs. A separate advisory deals with updated PostgreSQL packages for Red Hat Linux 6.2, 7, 7.1, and 7.

Updated PostgreSQL packages are available for Red Hat Linux 6.2, 7, 7.1, and 7.2 where we have backported a number of security fixes. A separate advisory deals with updated PostgreSQL packages for Red Hat Linux 7.3 and 8.0.

Ilia Alshanetsky discovered several buffer overflows in libmcrypt, a decryption and encryption library, that originates in from improper or lacking input validation. By passing input which is longer then expected to a number of functions (multiple functions are affected) the user can successful make libmcrypt crash and may be able to insert arbitrary, malicious, code which will be executed under the user libmcrypt runs as, e.g. inside a web server.

The library libpng provides several functions to encode, decode and manipulate Portable Network Graphics (PNG) image files. Due to wrong calculation of some loop offset values a buffer overflow can occur. The buffer overflow can lead to Denial-of-Service or even to remote compromise.

Multiple instances of improperly quoted shell command execution exist in KDE 2.x up to and including KDE 3.0.5. KDE fails to properly quote parameters of instructions passed to the shell for execution. These parameters may contain data such as filenames, URLs, email address, and so forth; this data may be provided remotely to a victim via email, web pages, files on a network filesystem, or other untrusted sources.

A stack buffer overflow in the implementation of the Kerberos v4 compatibility administration daemon (kadmind4) in the krb5 package can be exploited to gain unauthorized root access to a KDC host. Authentication to the daemon is not required to successfully perform the attack and according to MIT at least one exploit is known to exist. kadmind4 is used only by sites that require compatibility with legacy administrative clients, and sites that do not have these needs are likely not using kadmind4 and are not affected.

Updated CUPS packages are available for Red Hat Linux 7.3 and 8.0 which fix various security issues.

Updated libpng packages are available that fix a buffer overflow vulnerability.

The SuSE Security Team reviewed critical parts of openldap2, an implementation of the Lightweight Directory Access Protocol (LDAP) version 2 and 3, and found several buffer overflows and other bugs remote attackers could exploit to gain access on systems running vulnerable LDAP servers. In addition to these bugs, various local exploitable bugs within the OpenLDAP2 libraries have been fixed.

iDEFENSE discovered an integer overflow in the pdftops filter from the xpdf and xpdf-i packages that can be exploited to gain the privileges of the target user. This can lead to gaining privileged access to the 'lp' user if thee pdftops program is part of the print filter.

A vulnerability was discovered by Simon Kelley in the dhcpcd DHCP client daemon. dhcpcd has the ability to execute an external script named dhcpcd-<interface>.exe when an IP address is assigned to that network interface. The script sources the file /var/lib/dhcpcd/dhcpcd-<interface>.info which contains shell variables and DHCP assignment information. The way quotes are handled inside these assignments is flawed, and a malicious DHCP server can execute arbitrary shell commands on the vulnerable DHCP client system. This can also be exploited by an attacker able to spoof DHCP responses.

The pdftops filter found in both the xpdf and CUPS packages suffers from an integer overflow that can be exploited to gain the privilege of the victim user.

iDefense reported several security problems in CUPS that can lead to local and remote root compromise.

Updated Ethereal packages are available which fix various security issues.