PHP before 5.3.9 has improper libxslt security settings, which allows remote attackers to create arbitrary files via a crafted XSLT stylesheet that uses the libxslt output extension.
h20000.www2.hp.com/bizsupport/TechSupport/Document.jsp?objectID=c03360041
lists.opensuse.org/opensuse-security-announce/2012-03/msg00013.html
lists.opensuse.org/opensuse-security-announce/2012-03/msg00016.html
lists.opensuse.org/opensuse-security-announce/2012-04/msg00001.html
openwall.com/lists/oss-security/2012/01/13/10
openwall.com/lists/oss-security/2012/01/13/4
openwall.com/lists/oss-security/2012/01/13/5
openwall.com/lists/oss-security/2012/01/13/6
openwall.com/lists/oss-security/2012/01/13/7
openwall.com/lists/oss-security/2012/01/14/1
openwall.com/lists/oss-security/2012/01/14/2
openwall.com/lists/oss-security/2012/01/14/3
openwall.com/lists/oss-security/2012/01/15/1
openwall.com/lists/oss-security/2012/01/15/10
openwall.com/lists/oss-security/2012/01/15/2
openwall.com/lists/oss-security/2012/01/18/3
php.net/ChangeLog-5.php#5.3.9
secunia.com/advisories/48668
www.debian.org/security/2012/dsa-2399
bugs.php.net/bug.php?id=54446
exchange.xforce.ibmcloud.com/vulnerabilities/72908