Thank you for reading the Linux Advisory Watch Security Newsletter. The purpose of this document is to provide our readers with a quick summary of each week's vendor security bulletins and pointers on methods to improve the security posture of your open source system. Vulnerabilities affect nearly every vendor virtually every week, so be sure to read through to find the updates your distributor have made available.

LinuxSecurity.com Feature Extras:

Free Online security course (LearnSIA) - A Call for Help - The Survivability and Information Assurance (SIA) course was originally developed by a team at Carnegie Mellon, led by Lawrence Rogers (/about/divisions/cert/index.cfm). Back in 2010, I requested a license to continue the development of the course because it provides useful information on Information Assurance. Also, this course will always be freely available for anyone to use in the classroom or self-study. There are three parts to the LearnSIA curriculum.

What You Need to Know About Linux Rootkits - Rootkits are a way attackers hide their tracks and keep access to the machines they control. The good rootkits are very hard to detect and remove. They can be running on ones computer and no one can even know they have been running. Read more to learn how to detect them on your system.

(Oct 10)

Several vulnerabilities were discovered in Bugzilla, a web-based bug tracking system. CVE-2010-4572 [More...]
(Oct 10)

A cross-site scriping vulnerability was discovered in the rst parser of Moin, a Python clone of WikiWiki. For the oldstable distribution (lenny), this problem has been fixed in [More...]
Debian: 2320-1: dokuwiki: regression fix (Oct 8)

The dokuwiki update included in Debian Lenny 5.0.9 to address a cross site scripting issue (CVE-2011-2510) had a regression rendering links to external websites broken. This update corrects that regression. [More...]
(Oct 8)

Neel Mehta discovered that a race condition in Policykit, a framework for managing administrative policies and privileges, allowed local users to elevate privileges by executing a setuid program from pkexec. [More...]
(Oct 6)

Multiple security issues have been discovered in cyrus-imapd, a highly scalable mail system designed for use in enterprise environments. The Common Vulnerabilities and Exposures project identifies the following problems: [More...]
(Oct 13)

Multiple vulnerabilities in Adobe Flash Player might allow remoteattackers to execute arbitrary code or cause a Denial of Service.
(Oct 13)

Insecure usage of server provided filenames may allow the creation oroverwriting of local files.
(Oct 13)

A privilege escalation vulnerability was found in Conky.
(Oct 13)

Multiple vulnerabilities were found in feh, the worst of which leadingto remote passive code execution.
(Oct 10)

Multiple vulnerabilities were found in PHP, the worst of which leadingto remote execution of arbitrary code.
(Oct 10)

Multiple vulnerabilities were found in GnuTLS, allowing for easierman-in-the-middle attacks.
(Oct 10)

A Denial of Service vulnerability was found in vsftpd.
(Oct 10)

Multiple vulnerabilities were found in Bugzilla, the worst of whichleading to privilege escalation.
(Oct 10)

Multiple vulnerabilities were found in Dovecot, the worst of whichallowing for remote execution of arbitrary code.
(Oct 9)

Multiple vulnerabilities in Wireshark allow for the remote execution ofarbitrary code, or a Denial of Service condition.
(Oct 9)

Multiple vulnerabilities were found in OpenSSL, allowing for theexecution of arbitrary code and other attacks.
Mandriva: 2011:148: samba (Oct 11)

Multiple vulnerabilities has been discovered and corrected in samba/cifs-utils: smbfs in Samba 3.5.8 and earlier attempts to use (1) mount.cifs to append to the /etc/mtab file and (2) umount.cifs to append to the [More...]
Mandriva: 2011:147: cups (Oct 10)

A vulnerability has been discovered and corrected in cups: The gif_read_lzw function in filter/image-gif.c in CUPS 1.4.8 and earlier does not properly handle the first code word in an LZW stream, which allows remote attackers to trigger a heap-based buffer overflow, [More...]
Mandriva: 2011:146: cups (Oct 10)

Multiple vulnerabilities has been discovered and corrected in cups: The cupsDoAuthentication function in auth.c in the client in CUPS before 1.4.4, when HAVE_GSSAPI is omitted, does not properly handle a demand for authorization, which allows remote CUPS servers to cause [More...]
Mandriva: 2011:145: libxml2 (Oct 9)

Double free vulnerabilities in libxml2 allows remote attackers to cause a denial of service or possibly have unspecified other impact via a crafted XPath expression and via vectors related to XPath handling (CVE-2011-2821, CVE-2011-2834). [More...]
Mandriva: 2011:131-1: libxml (Oct 9)

Multiple vulnerabilities has been discovered and corrected in libxml/libxml2: Integer overflow in xpath.c in libxml2 2.6.x through 2.6.32 and 2.7.x through 2.7.8, and libxml 1.8.16 and earlier, allows context-dependent [More...]
Mandriva: 2011:144: apache (Oct 8)

A vulnerability has been discovered and corrected in apache: The mod_proxy module in the Apache HTTP Server 1.3.x through 1.3.42, 2.0.x through 2.0.64, and 2.2.x through 2.2.21 does not properly interact with use of (1) RewriteRule and (2) ProxyPassMatch pattern [More...]
Red Hat: 2011:1371-01: pidgin: Moderate Advisory (Oct 13)

Updated pidgin packages that fix multiple security issues are now available for Red Hat Enterprise Linux 4 and 5. The Red Hat Security Response Team has rated this update as having moderate [More...]
Red Hat: 2011:1369-01: httpd: Important Advisory (Oct 13)

Updated httpd packages that fix one security issue are now available for Red Hat Application Stack v2. The Red Hat Security Response Team has rated this update as having [More...]
Red Hat: 2011:1364-01: kdelibs: Moderate Advisory (Oct 11)

Updated kdelibs packages that fix one security issue and add one enhancement are now available for Red Hat Enterprise Linux 6. The Red Hat Security Response Team has rated this update as having moderate [More...]
Red Hat: 2011:1359-01: xorg-x11-server: Moderate Advisory (Oct 6)

Updated xorg-x11-server packages that fix multiple security issues are now available for Red Hat Enterprise Linux 5 and 6. The Red Hat Security Response Team has rated this update as having moderate [More...]
Red Hat: 2011:1360-01: xorg-x11: Moderate Advisory (Oct 6)

Updated xorg-x11 packages that fix multiple security issues are now available for Red Hat Enterprise Linux 4. The Red Hat Security Response Team has rated this update as having moderate [More...]
Ubuntu: 1230-1: Quassel vulnerability (Oct 14)

An unprivileged user could read files in the data and logging directories,including an automatically generated SSL certificate, used by the quasselcoredaemon.
Ubuntu: 1227-1: Linux kernel vulnerabilities (Oct 11)

Multiple kernel flaws have been fixed.