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:

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.

Review: A Practical Guide to Fedora and Red Hat Enterprise Linux - Fifth Edition - Mark Sobell again delivers the answers to common Linux administration challenges, and provides thorough and step-by-step instructions to configuring many of the common Linux Internet services in A Practical Guide to Fedora and Red Hat Enterprise Linux, Fifth Edition.

(Aug 11)

David Zych discovered that the ISC DHCP crashes when processing certain packets, leading to a denial of service. For the oldstable distribution (lenny), this problem has been fixed in [More...]
(Aug 8)

Various vulnerabilities have been found in SquirrelMail, a webmail application. The Common Vulnerabilities and Exposures project identifies the following vulnerabilities: [More...]
(Aug 7)

The Samba Web Administration Tool (SWAT) contains several cross-site request forgery (CSRF) vulnerabilities (CVE-2011-2522) and a cross-site scripting vulnerability (CVE-2011-2694). [More...]
(Aug 7)

Several remote vulnerabilities have been discovered in the TYPO3 web content management framework: cross-site scripting, information disclosure, authentication delay bypass, and arbitrary file deletion. More details can be found in the Typo3 security advisory: [More...]
Red Hat: 2011:1155-01: xorg-x11: Important Advisory (Aug 11)

Updated xorg-x11 packages that fix one security issue are now available for Red Hat Enterprise Linux 4. The Red Hat Security Response Team has rated this update as having [More...]
Red Hat: 2011:1154-01: libXfont: Important Advisory (Aug 11)

Updated libXfont packages that fix one security issue are now available for Red Hat Enterprise Linux 5 and 6. The Red Hat Security Response Team has rated this update as having [More...]
Red Hat: 2011:1144-01: flash-plugin: Critical Advisory (Aug 10)

An updated Adobe Flash Player package that fixes multiple security issues is now available for Red Hat Enterprise Linux 5 and 6 Supplementary. The Red Hat Security Response Team has rated this update as having critical [More...]
Red Hat: 2011:1132-01: dbus: Moderate Advisory (Aug 9)

Updated dbus packages that fix one security issue 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...]
SuSE: 2011-034: Linux kernel (Aug 12)

This kernel update for the SUSE Linux Enterprise 10 SP4 kernel fixes several security issues and bugs. Following security issues were fixed: CVE-2011-1093: The dccp_rcv_state_process function in net/dccp/input.c in the Datagram Congestion Control Protocol (DCCP) implementation [More...]
SuSE: 2011-032: IBM Java 5 (Aug 4)

IBM Java 1.5.0 SR12 FP5 has been released fixing bugs and security issues. Following security issues were fixed: CVE-2011-0865: Unspecified vulnerability in the Java Runtime Environment (JRE) component in Oracle Java SE 6 Update 25 and earlier, [More...]
Ubuntu: 1187-1: Linux kernel (Maverick backport) vulnerabilities (Aug 8)

Multiple kernel flaws have been fixed.
Ubuntu: 1186-1: Linux kernel vulnerabilities (Aug 8)

Multiple kernel flaws have been fixed.
Pardus: 2011-107: wireshark: Multiple (Aug 8)

A vulnerability has been fixed in wireshark
Pardus: 2011-106: clamav: Denial of Service (Aug 8)

A vulnerability has been fixed in clamav.
Pardus: 2011-106: clamav: Denial of Service (Aug 8)

A vulnerability has been fixed in clamav.
Pardus: 2011-105: libpng: Multiple Vulnerabilities (Aug 8)

Multiple vulnerabilities have been fixed in libpng.
Pardus: 2011-103: libsndfile: Arbitrary Code (Aug 4)

A vulnerability has been fixed in libsndfile.
Pardus: 2011-102: libvirt: Multiple Vulnerabilities (Aug 4)

Multiple vulnerabilities have been fixed in libvirt.
Pardus: 2011-101: Ruby: Denial of Service (Aug 4)

A vulnerability has been fixed in ruby, which can be used by local attacker to possibly cause denial of service.
Pardus: 2011-100: Bind: Denial of Service (Aug 4)

A vulnerability has been fixed in bind.