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 2)

Stunnel, a program designed to work as an universal SSL tunnel for network daemons, is prone to a buffer overflow vulnerability when using the Microsoft NT LAN Manager (NTLM) authentication ("protocolAuthentication = NTLM") together with the 'connect' protocol [More...]
(Apr 30)

Kevin Wojtysiak discovered a vulnerability in strongSwan, an IPsec based VPN solution. When using the openssl plugin for ECDSA based authentication, an empty, zeroed [More...]
Mandriva: 2013:159: clamav (Apr 30)

ClamAV 0.97.8 addresses several reported potential security bugs. [More...] _______________________________________________________________________
Mandriva: 2013:158: krb5 (Apr 30)

A vulnerability has been discovered and corrected in krb5: The prep_reprocess_req function in do_tgs_req.c in the Key Distribution Center (KDC) in MIT Kerberos 5 (aka krb5) before 1.10.5 does not properly perform service-principal realm referral, which allows [More...]
Mandriva: 2013:157: krb5 (Apr 30)

Multiple vulnerabilities has been discovered and corrected in krb5: The pkinit_check_kdc_pkid function in plugins/preauth/pkinit/pkinit_crypto_openssl.c in the PKINIT implementation in the Key Distribution Center (KDC) in MIT Kerberos [More...]
Mandriva: 2013:156: apache-mod_security (Apr 29)

A vulnerability has been found and corrected in apache-mod_security: ModSecurity before 2.7.3 allows remote attackers to read arbitrary files, send HTTP requests to intranet servers, or cause a denial of service (CPU and memory consumption) via an XML external entity [More...]
Mandriva: 2013:155: fuse (Apr 29)

A vulnerability has been found and corrected in fuse: FUSE, possibly 2.8.5 and earlier, allows local users to create mtab entries with arbitrary pathnames, and consequently unmount any filesystem, via a symlink attack on the parent directory of [More...]
Mandriva: 2013:154: util-linux (Apr 29)

A vulnerability has been found and corrected in util-linux: An information disclosure flaw was found in the way the mount command reported errors. A local attacker could use this flaw to determine the existence of files and directories they do not have access to [More...]
Mandriva: 2013:153: subversion (Apr 26)

Multiple vulnerabilities has been found and corrected in subversion: Subversion's mod_dav_svn Apache HTTPD server module will use excessive amounts of memory when a large number of properties are set or deleted on a node. This can lead to a DoS. There are no known instances of [More...]
Mandriva: 2013:152: subversion (Apr 26)

Multiple vulnerabilities has been found and corrected in subversion: Subversion's mod_dav_svn Apache HTTPD server module will use excessive amounts of memory when a large number of properties are set or deleted on a node. This can lead to a DoS. There are no known instances of [More...]
Mandriva: 2013:151: curl (Apr 26)

Updated curl packages fix security vulnerability: libcurl is vulnerable to a cookie leak vulnerability when doing requests across domains with matching tails. This vulnerability can be used to hijack sessions in targetted attacks since registering domains [More...]
Red Hat: 2013:0772-01: mysql: Important Advisory (Apr 25)

Updated mysql packages that fix several security issues are now available for Red Hat Enterprise Linux 6. The Red Hat Security Response Team has rated this update as having [More...]
Ubuntu: 1815-1: Linux kernel vulnerabilities (May 2)

Several security issues were fixed in the kernel.
Ubuntu: 1815-1: Linux kernel vulnerabilities (May 2)

Several security issues were fixed in the kernel.
Ubuntu: 1814-1: Linux kernel (OMAP4) vulnerabilities (May 2)

Several security issues were fixed in the kernel.
Ubuntu: 1813-1: Linux kernel vulnerabilities (May 2)

Several security issues were fixed in the kernel.
Ubuntu: 1812-1: Linux kernel (Quantal HWE) vulnerabilities (May 1)

Several security issues were fixed in the kernel.
Ubuntu: 1811-1: Linux kernel (OMAP4) vulnerabilities (May 1)

Several security issues were fixed in the kernel.
Ubuntu: 1809-1: Linux kernel vulnerabilities (May 1)

Several security issues were fixed in the kernel.
Ubuntu: 1808-1: Linux kernel (EC2) vulnerabilities (Apr 25)

Several security issues were fixed in the kernel.