Important: libxslt

Issue Overview:

A heap-based buffer overflow flaw was found in the way libxslt applied templates to nodes selected by certain namespaces. An attacker could use this flaw to create a malicious XSL file that, when used by an application linked against libxslt to perform an XSL transformation, could cause the application to crash or, possibly, execute arbitrary code with the privileges of the user running the application. (CVE-2012-2871)

Several denial of service flaws were found in libxslt. An attacker could use these flaws to create a malicious XSL file that, when used by an application linked against libxslt to perform an XSL transformation, could cause the application to crash. (CVE-2012-2825, CVE-2012-2870, CVE-2011-3970)

An information leak could occur if an application using libxslt processed an untrusted XPath expression, or used a malicious XSL file to perform an XSL transformation. If combined with other flaws, this leak could possibly help an attacker bypass intended memory corruption protections. (CVE-2011-1202)

Affected Packages:

libxslt

Issue Correction:
Run yum update libxslt to update your system.

New Packages:

i686:  
    libxslt-python-1.1.26-2.7.amzn1.i686  
    libxslt-1.1.26-2.7.amzn1.i686  
    libxslt-devel-1.1.26-2.7.amzn1.i686  
    libxslt-debuginfo-1.1.26-2.7.amzn1.i686  
  
src:  
    libxslt-1.1.26-2.7.amzn1.src  
  
x86_64:  
    libxslt-devel-1.1.26-2.7.amzn1.x86_64  
    libxslt-debuginfo-1.1.26-2.7.amzn1.x86_64  
    libxslt-python-1.1.26-2.7.amzn1.x86_64  
    libxslt-1.1.26-2.7.amzn1.x86_64  

Additional References

Red Hat: CVE-2011-1202, CVE-2011-3970, CVE-2012-2825, CVE-2012-2870, CVE-2012-2871

Mitre: CVE-2011-1202, CVE-2011-3970, CVE-2012-2825, CVE-2012-2870, CVE-2012-2871