OpenSSL is vulnerable to man in the middle (MitM) attacks. These attacks are possible because the DTLS retransmission implementation doesnโt correctly maintain data structures for digest and encryption contexts.
git.openssl.org/gitweb/?p=openssl.git;a=commit;h=34628967f1e65dc8f34e000f0f5518e21afbfc7b
lists.fedoraproject.org/pipermail/package-announce/2014-August/136470.html
lists.fedoraproject.org/pipermail/package-announce/2014-August/136473.html
lists.opensuse.org/opensuse-updates/2014-01/msg00031.html
lists.opensuse.org/opensuse-updates/2014-01/msg00032.html
rhn.redhat.com/errata/RHSA-2014-0015.html
seclists.org/fulldisclosure/2014/Dec/23
security.gentoo.org/glsa/glsa-201412-39.xml
www-01.ibm.com/support/docview.wss?uid=isg400001841
www-01.ibm.com/support/docview.wss?uid=isg400001843
www.debian.org/security/2014/dsa-2833
www.openssl.org/news/vulnerabilities.html
www.oracle.com/technetwork/topics/security/cpujan2015-1972971.html
www.oracle.com/technetwork/topics/security/cpujul2014-1972956.html
www.securityfocus.com/archive/1/534161/100/0/threaded
www.securityfocus.com/bid/64618
www.securitytracker.com/id/1029549
www.securitytracker.com/id/1031594
www.ubuntu.com/usn/USN-2079-1
www.vmware.com/security/advisories/VMSA-2014-0012.html
git.openssl.org/gitweb/?p=openssl.git;a=commit;h=34628967f1e65dc8f34e000f0f5518e21afbfc7b
puppet.com/security/cve/cve-2013-6450
security-tracker.debian.org/tracker/CVE-2013-6450
www.openssl.org/news/vulnerabilities.html