The _clone function in XML::LibXML before 2.0119 does not properly set the expand_entities option, which allows remote attackers to conduct XML external entity (XXE) attacks via crafted XML data to the (1) new or (2) load_xml function.

References

• https://nvd.nist.gov/vuln/detail/CVE-2015-3451
• https://bitbucket.org/shlomif/perl-xml-libxml/commits/5962fd067580767777e94640b129ae8930a68a30/raw/
• http://advisories.mageia.org/MGASA-2015-0199.html
• http://cpansearch.perl.org/src/SHLOMIF/XML-LibXML-2.0119/Changes
• http://lists.fedoraproject.org/pipermail/package-announce/2015-May/157448.html
• http://lists.fedoraproject.org/pipermail/package-announce/2015-May/157740.html
• http://lists.opensuse.org/opensuse-updates/2015-09/msg00006.html
• http://www.debian.org/security/2015/dsa-3243
• http://www.mandriva.com/security/advisories?name=MDVSA-2015:231
• http://www.openwall.com/lists/oss-security/2015/04/25/2
• http://www.openwall.com/lists/oss-security/2015/04/30/1
• http://www.securityfocus.com/bid/74333
• http://www.ubuntu.com/usn/USN-2592-1