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:

Securing a Linux Web Server - With the significant prevalence of Linux web servers globally, security is often touted as a strength of the platform for such a purpose. However, a Linux based web server is only as secure as its configuration and very often many are quite vulnerable to compromise. While specific configurations vary wildly due to environments or specific use, there are various general steps that can be taken to insure basic security considerations are in place.

Password guessing with Medusa 2.0 - Medusa was created by the fine folks at foofus.net, in fact the much awaited Medusa 2.0 update was released in February of 2010. For a complete change log please visit

(May 29)

It was discovered that a malicious client could crash a GNUTLS server and vice versa, by sending TLS records encrypted with a block cipher which contain invalid padding. [More...]
(May 29)

A vulnerability has been discovered in the Open Ticket Request System, which can be exploited by malicious users to disclose potentially sensitive information. An attacker with a valid agent login could manipulate URLs in the ticket [More...]
(May 29)

Several vulnerabilities have been discovered in the chromium web browser. Multiple use-after-free, out-of-bounds read, memory safety, and cross-site scripting issues were discovered and corrected. [More...]
(May 26)

A privilege escalation vulnerability has been found in SPIP, a website engine for publishing, which allows anyone to take control of the website. [More...]
(May 24)

Ilja van Sprundel of IOActive discovered several security issues in multiple components of the X.org graphics stack and the related libraries: Various integer overflows, sign handling errors in integer conversions, buffer overflows, memory corruption and missing input [More...]
(May 24)

A regression was discovered in the security update for libxvmc, causing segfaults with some applications. Updated packages are available to address this problem. For reference, the original advisory text follows. [More...]
(May 23)

Ilja van Sprundel of IOActive discovered several security issues in multiple components of the X.org graphics stack and the related libraries: Various integer overflows, sign handling errors in integer conversions, buffer overflows, memory corruption and missing input [More...]
(May 23)

Ilja van Sprundel of IOActive discovered several security issues in multiple components of the X.org graphics stack and the related libraries: Various integer overflows, sign handling errors in integer conversions, buffer overflows, memory corruption and missing input [More...]
(May 23)

Ilja van Sprundel of IOActive discovered several security issues in multiple components of the X.org graphics stack and the related libraries: Various integer overflows, sign handling errors in integer conversions, buffer overflows, memory corruption and missing input [More...]
(May 23)

Ilja van Sprundel of IOActive discovered several security issues in multiple components of the X.org graphics stack and the related libraries: Various integer overflows, sign handling errors in integer conversions, buffer overflows, memory corruption and missing input [More...]
(May 23)

Ilja van Sprundel of IOActive discovered several security issues in multiple components of the X.org graphics stack and the related libraries: Various integer overflows, sign handling errors in integer conversions, buffer overflows, memory corruption and missing input [More...]
(May 23)

Ilja van Sprundel of IOActive discovered several security issues in multiple components of the X.org graphics stack and the related libraries: Various integer overflows, sign handling errors in integer conversions, buffer overflows, memory corruption and missing input [More...]
(May 23)

Ilja van Sprundel of IOActive discovered several security issues in multiple components of the X.org graphics stack and the related libraries: Various integer overflows, sign handling errors in integer conversions, buffer overflows, memory corruption and missing input [More...]
(May 23)

Ilja van Sprundel of IOActive discovered several security issues in multiple components of the X.org graphics stack and the related libraries: Various integer overflows, sign handling errors in integer conversions, buffer overflows, memory corruption and missing input [More...]
(May 23)

Ilja van Sprundel of IOActive discovered several security issues in multiple components of the X.org graphics stack and the related libraries: Various integer overflows, sign handling errors in integer conversions, buffer overflows, memory corruption and missing input [More...]
(May 23)

Ilja van Sprundel of IOActive discovered several security issues in multiple components of the X.org graphics stack and the related libraries: Various integer overflows, sign handling errors in integer conversions, buffer overflows, memory corruption and missing input [More...]
(May 23)

Ilja van Sprundel of IOActive discovered several security issues in multiple components of the X.org graphics stack and the related libraries: Various integer overflows, sign handling errors in integer conversions, buffer overflows, memory corruption and missing input [More...]
(May 23)

Ilja van Sprundel of IOActive discovered several security issues in multiple components of the X.org graphics stack and the related libraries: Various integer overflows, sign handling errors in integer conversions, buffer overflows, memory corruption and missing input [More...]
(May 23)

Ilja van Sprundel of IOActive discovered several security issues in multiple components of the X.org graphics stack and the related libraries: Various integer overflows, sign handling errors in integer conversions, buffer overflows, memory corruption and missing input [More...]
(May 23)

Ilja van Sprundel of IOActive discovered several security issues in multiple components of the X.org graphics stack and the related libraries: Various integer overflows, sign handling errors in integer conversions, buffer overflows, memory corruption and missing input [More...]
(May 23)

Ilja van Sprundel of IOActive discovered several security issues in multiple components of the X.org graphics stack and the related libraries: Various integer overflows, sign handling errors in integer conversions, buffer overflows, memory corruption and missing input [More...]
(May 23)

Ilja van Sprundel of IOActive discovered several security issues in multiple components of the X.org graphics stack and the related libraries: Various integer overflows, sign handling errors in integer conversions, buffer overflows, memory corruption and missing input [More...]
(May 23)

Ilja van Sprundel of IOActive discovered several security issues in multiple components of the X.org graphics stack and the related libraries: Various integer overflows, sign handling errors in integer conversions, buffer overflows, memory corruption and missing input [More...]
(May 23)

Ilja van Sprundel of IOActive discovered several security issues in multiple components of the X.org graphics stack and the related libraries: Various integer overflows, sign handling errors in integer conversions, buffer overflows, memory corruption and missing input [More...]
(May 23)

Ilja van Sprundel of IOActive discovered several security issues in multiple components of the X.org graphics stack and the related libraries: Various integer overflows, sign handling errors in integer conversions, buffer overflows, memory corruption and missing input [More...]
(May 23)

Ilja van Sprundel of IOActive discovered several security issues in multiple components of the X.org graphics stack and the related libraries: Various integer overflows, sign handling errors in integer conversions, buffer overflows, memory corruption and missing input [More...]
Mandriva: 2013:171: gnutls (May 30)

A vulnerability has been discovered and corrected in gnutls: A flaw was found in the way GnuTLS decrypted TLS record packets when using CBC encryption. The number of pad bytes read form the packet was not checked against the cipher text size, resulting in an out of [More...]
Mandriva: 2013:170: socat (May 29)

A vulnerability has been discovered and corrected in socat: Under certain circumstances an FD leak occurs and can be misused for denial of service attacks against socat running in server mode (CVE-2013-3571). [More...]
Mandriva: 2013:169: socat (May 29)

Multiple vulnerabilities has been discovered and corrected in socat: A heap based buffer overflow vulnerability has been found with data that happens to be output on the READLINE address. Successful exploitation may allow an attacker to execute arbitrary code with [More...]
Mandriva: 2013:168: python-httplib2 (May 27)

Updated python-httplib2 packages fix security vulnerability: httplib2 only validates SSL certificates on the first request to a connection, and doesn't report validation failures on subsequent requests (CVE-2013-2037). [More...]
Mandriva: 2013:167: openvpn (May 27)

Updated openvpn package fixes security vulnerability: OpenVPN 2.3.0 and earlier running in UDP mode are subject to chosen ciphertext injection due to a non-constant-time HMAC comparison function. Plaintext recovery may be possible using a padding oracle [More...]
Red Hat: 2013:0884-01: libtirpc: Moderate Advisory (May 30)

Updated libtirpc packages that fix one security issue 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: 2013:0883-01: gnutls: Important Advisory (May 30)

Updated gnutls 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: 2013:0882-01: kernel: Important Advisory (May 30)

Updated kernel packages that fix multiple security issues and several bugs are now available for Red Hat Enterprise Linux 6.2 Extended Update Support. The Red Hat Security Response Team has rated this update as having [More...]
Red Hat: 2013:0869-01: tomcat6: Important Advisory (May 28)

Updated tomcat6 packages that fix two security issues are now available for Red Hat Enterprise Linux 6. The Red Hat Security Response Team has rated this update as having [More...]
Red Hat: 2013:0868-01: haproxy: Moderate Advisory (May 28)

An updated haproxy package that fixes one security issue is now available for Red Hat Enterprise Linux 6. The Red Hat Security Response Team has rated this update as having moderate [More...]
Red Hat: 2013:0870-01: tomcat5: Important Advisory (May 28)

Updated tomcat5 packages that fix one security issue are now available for Red Hat Enterprise Linux 5. The Red Hat Security Response Team has rated this update as having [More...]
Red Hat: 2013:0849-01: KVM image: Important Advisory (May 23)

The Red Hat Enterprise Linux 6.4 KVM Guest Image for cloud instances had an empty root password by default. The Red Hat Security Response Team has rated this update as having [More...]
Ubuntu: 1849-1: Linux kernel (Raring HWE) vulnerability (May 31)

The system could be made to crash or run programs as an administrator ifit received specially crafted network traffic.
Ubuntu: 1845-1: Linux kernel (Quantal HWE) vulnerability (May 30)

The system could be made to crash or run programs as an administrator ifit received specially crafted network traffic.
Ubuntu: 1846-1: Linux kernel vulnerability (May 30)

The system could be made to crash or run programs as an administrator ifit received specially crafted network traffic.
Ubuntu: 1844-1: Linux kernel vulnerability (May 30)

The system could be made to crash or run programs as an administrator ifit received specially crafted network traffic.
Ubuntu: 1847-1: Linux kernel vulnerability (May 30)

The system could be made to crash or run programs as an administrator ifit received specially crafted network traffic.
Ubuntu: 1838-1: Linux kernel (OMAP4) vulnerabilities (May 30)

Several security issues were fixed in the kernel.
Ubuntu: 1843-1: GnuTLS vulnerability (May 29)

GnuTLS could be made to crash if it received specially crafted networktraffic.
Ubuntu: 1842-1: KDE-Libs vulnerability (May 29)

KDE-Libs could be made to expose web credentials.
Ubuntu: 1831-2: OpenStack Nova regression (May 28)

USN-1831-1 introduced a regression in OpenStack Nova.
Ubuntu: 1841-1: Tomcat vulnerabilities (May 28)

Several security issues were fixed in Tomcat.
Ubuntu: 1839-1: Linux kernel (OMAP4) vulnerabilities (May 28)

Several security issues were fixed in the kernel.
Ubuntu: 1837-1: Linux kernel vulnerabilities (May 24)

Several security issues were fixed in the kernel.
Ubuntu: 1835-1: Linux kernel vulnerabilities (May 24)

Several security issues were fixed in the kernel.
Ubuntu: 1836-1: Linux kernel (OMAP4) vulnerabilities (May 24)

Several security issues were fixed in the kernel.
Ubuntu: 1834-1: Linux kernel (Quantal HWE) vulnerabilities (May 24)

Several security issues were fixed in the kernel.
Ubuntu: 1833-1: Linux kernel vulnerabilities (May 24)

Several security issues were fixed in the kernel.