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:

Peter Smith Releases Linux Network Security Online - Thanks so much to Peter Smith for announcing on linuxsecurity.com the release of his Linux Network Security book available free online. "In 2005 I wrote a book on Linux security. 8 years later and the publisher has gone out of business. Now that I'm free from restrictions on reproducing material from the book, I have decided to make the entire book available online."

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.

  (Mar 31)
 

Security Report Summary
  (Mar 31)
 

Security Report Summary
  (Mar 31)
 

Security Report Summary
  (Mar 30)
 

Security Report Summary
  (Mar 29)
 

Security Report Summary
  (Mar 28)
 

Security Report Summary
  (Mar 27)
 

Security Report Summary
  (Mar 27)
 

Security Report Summary
  (Mar 27)
 

PlRPC uses Storable which allows for code execution prior to Authentication
  Red Hat: 2014:0354-01: libyaml: Important Advisory (Apr 2)
 

Updated libyaml packages that fix two security issues are now available for Red Hat Enterprise Linux OpenStack Platform 4. The Red Hat Security Response Team has rated this update as having [More...]
  Red Hat: 2014:0353-01: libyaml: Important Advisory (Apr 2)
 

Updated libyaml packages that fix two security issues are now available for Red Hat Enterprise Linux OpenStack Platform 3. The Red Hat Security Response Team has rated this update as having [More...]
  Red Hat: 2014:0355-01: ruby193-libyaml: Important Advisory (Apr 2)
 

Updated ruby193-libyaml packages that fix two security issues are now available for Red Hat Software Collections 1. The Red Hat Security Response Team has rated this update as having [More...]
  Red Hat: 2014:0348-01: xalan-j2: Important Advisory (Apr 1)
 

Updated xalan-j2 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: 2014:0342-01: wireshark: Moderate Advisory (Mar 31)
 

Updated wireshark packages that fix multiple security issues 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: 2014:0341-01: wireshark: Moderate Advisory (Mar 31)
 

Updated wireshark 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...]
  (Mar 29)
 

New httpd packages are available for Slackware 14.0, 14.1, and -current to fix security issues. [More Info...]
  (Mar 29)
 

New seamonkey packages are available for Slackware 14.0, 14.1, and -current to fix security issues. [More Info...]
  (Mar 29)
 

New openssh packages are available for Slackware 13.0, 13.1, 13.37, 14.0, 14.1, and -current to fix a security issue. [More Info...]
  (Mar 29)
 

New mozilla-firefox packages are available for Slackware 14.1, and -current to fix security issues. [More Info...]
  (Mar 28)
 

New mozilla-nss packages are available for Slackware 14.0, 14.1, and -current to fix a security issue. [More Info...]
  (Mar 28)
 

New curl packages are available for Slackware 13.0, 13.1, 13.37, 14.0, 14.1, and -current to fix security issues. [More Info...]
  (Mar 28)
 

New mozilla-thunderbird packages are available for Slackware 14.1, and -current to fix security issues. [More Info...]
  Ubuntu: 2161-1: libyaml-libyaml-perl vulnerabilities (Apr 3)
 

libyaml-libyaml-perl could be made to crash or run programs if it opened aspecially crafted YAML file.
  Ubuntu: 2160-1: LibYAML vulnerability (Apr 3)
 

LibYAML could be made to crash or run programs if it opened a speciallycrafted YAML document.
  Ubuntu: 2159-1: NSS vulnerability (Apr 2)
 

NSS could be made to expose sensitive information over the network.
  Ubuntu: 2158-1: Linux kernel (Raring HWE) vulnerabilities (Apr 1)
 

Several security issues were fixed in the kernel.
  Ubuntu: 2157-1: ClamAV update (Mar 27)
 

ClamAV has been updated to a new version.