The (1) Zend_Feed_Rss and (2) Zend_Feed_Atom classes in Zend_Feed in Zend Framework 1.11.x before 1.11.15 and 1.12.x before 1.12.1 allow remote attackers to read arbitrary files, send HTTP requests to intranet servers, and possibly cause a denial of service (CPU and memory consumption) via an XML External Entity (XXE) attack.
framework.zend.com/security/advisory/ZF2012-05
openwall.com/lists/oss-security/2012/12/20/2
openwall.com/lists/oss-security/2012/12/20/4
www.debian.org/security/2012/dsa-2602
github.com/zendframework/zf1
github.com/zendframework/zf1/commit/15c84914f063efea49ea1c4425459a792cc185ea
nvd.nist.gov/vuln/detail/CVE-2012-5657
web.archive.org/web/20131101014013/www.mandriva.com/en/support/security/advisories/advisory/MDVSA-2013:115/?name=MDVSA-2013:115