expat is vulnerable to denial of service (DoS) attacks, with the possibility of other attacks. The vulnerability exists because there are multiple integer overflows in the XML_GetBuffer
function that leads to a heap-based buffer overflow which may lead to further unspecified impact. CVE-2016-4472 is related to the original issues CVE-2015-1283 and CVE-2015-2716, which were both incomplete due to the possibility of having the overflow checks optimized out during compilation.
www.securityfocus.com/bid/91528
www.ubuntu.com/usn/USN-3013-1
bugzilla.redhat.com/show_bug.cgi?id=1344251
kc.mcafee.com/corporate/index?page=content&id=SB10365
security.gentoo.org/glsa/201701-21
sourceforge.net/p/expat/code_git/ci/f0bec73b018caa07d3e75ec8dd967f3785d71bde
www.tenable.com/security/tns-2016-20