The Zend_Xml_Security::scan in ZendXml before 1.0.1 and Zend Framework before 1.12.14, 2.x before 2.4.6, and 2.5.x before 2.5.2, when running under PHP-FPM in a threaded environment, allows remote attackers to bypass security checks and conduct XML external entity (XXE) and XML entity expansion (XEE) attacks via multibyte encoded characters.

References

• https://nvd.nist.gov/vuln/detail/CVE-2015-5161
• https://www.exploit-db.com/exploits/37765/
• http://framework.zend.com/security/advisory/ZF2015-06
• http://legalhackers.com/advisories/zend-framework-XXE-vuln.txt
• http://lists.fedoraproject.org/pipermail/package-announce/2015-August/164409.html
• http://lists.fedoraproject.org/pipermail/package-announce/2015-August/165147.html
• http://lists.fedoraproject.org/pipermail/package-announce/2015-August/165173.html
• http://packetstormsecurity.com/files/133068/Zend-Framework-2.4.2-1.12.13-XXE-Injection.html
• http://seclists.org/fulldisclosure/2015/Aug/46
• http://www.debian.org/security/2015/dsa-3340
• zendframework/zf1#393
• zendframework/ZendXml@79f478f
• zendframework/zf1@ff7eddd
• https://web.archive.org/web/20200228055156/http://www.securityfocus.com/bid/76177
• https://framework.zend.com/security/advisory/ZF2015-06
• https://github.com/FriendsOfPHP/security-advisories/blob/master/zendframework/zendframework/CVE-2015-5161.yaml
• https://github.com/FriendsOfPHP/security-advisories/blob/master/zendframework/zendframework1/CVE-2015-5161.yaml
• https://github.com/FriendsOfPHP/security-advisories/blob/master/zendframework/zendxml/CVE-2015-5161.yaml
• http://www.securityfocus.com/bid/76177