The DTLS retransmission implementation in OpenSSL through 0.9.8y and 1.x through 1.0.1e does not properly maintain data structures for digest and encryption contexts, which might allow man-in-the-middle attackers to trigger the use of a different context by interfering with packet delivery, related to ssl/d1_both.c and ssl/t1_enc.c. http://web.nvd.nist.gov/view/vuln/detail?vulnId=CVE-2013-6450