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:

sec-wall: Open Source Security Proxy - sec-wall, a recently released security proxy is a one-stop place for everything related to securing HTTP/HTTPS traffic. Designed as a pragmatic solution to the question of securing servers using SSL/TLS certificates, WS-Security, HTTP Basic/Digest Auth, custom HTTP headers, XPath expressions with an option of modifying HTTP headers and URLs on the fly.

Book Review: Linux Kernel Programming - As Linux is implemented on increasingly wider number of devices, the number of people responsible for developing and maintaining Linux on those platforms have increased. As the level of maturity of the kernel increases, so does the complexity, capabilities, and size. This book provides the Linux programmer the tools necessary to understand the core aspects of the kernel and how to interface with it.

Guardian Digital is happy to announce the release of EnGarde Secure Community 3.0.22 (Version 3.0, Release 22). This release includes many updated packages and bug fixes and some feature enhancements to the EnGarde Secure Linux Installer and the SELinux policy.
(May 12)

It was discovered that Exim, Debian's default mail transfer agent, is vulnerable to command injection attacks in its DKIM processing code, leading to arbitrary code execution. (CVE-2011-1407) [More...]
(May 10)

Several vulnerabilities have been discovered in Icedove, an unbranded version of the Thunderbird mail/news client. CVE-2011-0069 CVE-2011-0070 CVE-2011-0072 CVE-2011-0074 CVE-2011-0075 CVE-2011-0077 CVE-2011-0078 CVE-2011-0080 CVE-2011-0081 [More...]
(May 10)

Several remote vulnerabilities have been discovered in python-zodb, a set of tools for using ZODB, that could lead to arbitrary code execution in the worst case. The Common Vulnerabilities and Exposures project identified the following problems: [More...]
(May 10)

Several vulnerabilities were discovered in Postfix, a mail transfer agent. The Common Vulnerabilities and Exposures project identifies the following problems: [More...]
(May 6)

It was discovered that Exim, the default mail transport agent in Debian, uses DKIM data obtain from DNS directly in a format string, potentially allowing malicious mail senders to execute arbitrary code. (CVE-2011-1764) [More...]
(May 6)

Multiple cross-site scripting vulnerabilities were discovered in Open Ticket Request System (OTRS), a trouble-ticket system. (CVE-2011-1518) In addition, this security update a failure when upgrading the package [More...]
Mandriva: 2011:084: apr (May 13)

It was discovered that the apr_fnmatch() function used an unconstrained recursion when processing patterns with the '*' wildcard. An attacker could use this flaw to cause an application using this function, which also accepted untrusted input as a pattern for matching (such as an httpd server using the mod_autoindex module), to exhaust all [More...]
Mandriva: 2011:083: wireshark (May 12)

This advisory updates wireshark to the latest version (1.2.16), fixing several security issues: The X.509if dissector in Wireshark 1.2.x before 1.2.16 and 1.4.x before 1.4.5 does not properly initialize certain global variables, [More...]
Red Hat: 2011:0511-01: flash-plugin: Critical Advisory (May 13)

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: 2011:0506-01: rdesktop: Moderate Advisory (May 11)

An updated rdesktop package that fixes one security issue is 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: 2011:0507-01: apr: Moderate Advisory (May 11)

Updated apr packages that fix one security issue are now available for Red Hat Enterprise Linux 4, 5, and 6. The Red Hat Security Response Team has rated this update as having moderate [More...]
Red Hat: 2011:0500-01: kernel-rt: Important Advisory (May 10)

Updated kernel-rt packages that fix multiple security issues and various bugs are now available for Red Hat Enterprise MRG 1.3. The Red Hat Security Response Team has rated this update as having [More...]
Red Hat: 2011:0498-01: kernel: Important Advisory (May 10)

Updated kernel packages that fix several security issues, various bugs, and add an enhancement are now available for Red Hat Enterprise Linux 6. The Red Hat Security Response Team has rated this update as having [More...]
Red Hat: 2011:0496-01: xen: Important Advisory (May 9)

Updated xen packages that fix several security issues are now available for Red Hat Enterprise Linux 5. The Red Hat Security Response Team has rated this update as having [More...]
Red Hat: 2011:0490-01: java-1.4.2-ibm: Critical Advisory (May 5)

Updated java-1.4.2-ibm packages that fix several security issues are now available for Red Hat Enterprise Linux 4 Extras and Red Hat Enterprise Linux 5 Supplementary. [More...]
Red Hat: 2011:0492-01: python: Moderate Advisory (May 5)

Updated python packages that fix multiple security issues are now available for Red Hat Enterprise Linux 5. The Red Hat Security Response Team has rated this update as having moderate [More...]
Red Hat: 2011:0491-01: python: Moderate Advisory (May 5)

Updated python 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...]
SuSE: 2011-024: IBM Java 1.4.2 (May 13)

IBM Java 1.4.2 was updated to SR 13 Fix Pack 9, fixing bugs and security issues. More information can be found on the IBM JDK Alerts page: https://www.ibm.com/support/pages/java-sdk/
SuSE: 2011-023: postfix (May 11)

A security problem in the Postfix mail transport agent was fixed that could potentially be used by remote attackers to exploit a memory corruption issue in postfix SASL implementation to execute arbitrary code (CVE-2011-1720). The upstream announcement is here: [More...]
SuSE: 2011-022: Mozilla (May 5)

The Mozilla suite of browsers received security updates. Following updates are included in this update: Mozilla Firefox was updated on SUSE Linux Enterprise 10 and 11 to the 3.6.17 security release. Mozilla Firefox was updated on openSUSE 11.4 to the 4.0.1 security release. Mozilla Thunderbird was updated on openSUSE to the 3.1.10 security release. [More...]
Ubuntu: 1131-1: Postfix vulnerability (May 11)

Ubuntu: 1130-1: Exim vulnerability (May 10)

Ubuntu: 1111-1: Linux kernel vulnerabilities (May 5)

Ubuntu: 1122-2: Thunderbird vulnerabilities (May 5)

Ubuntu: 1122-1: Thunderbird vulnerabilities (May 5)