The dtls1_clear_queues function in ssl/d1_lib.c in OpenSSL before 0.9.8za, 1.0.0 before 1.0.0m, and 1.0.1 before 1.0.1h frees data structures without considering that application data can arrive between a ChangeCipherSpec message and a Finished message, which allows remote DTLS peers to cause a denial of service (memory corruption and application crash) or possibly have unspecified other impact via unexpected application data.
Source: https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2014-8176
Reference (s):
- BID:75159
- URL: http://www.securityfocus.com/bid/75159
- CISCO:20150612 Multiple Vulnerabilities in OpenSSL (June 2015) Affecting Cisco Products
- URL: http://tools.cisco.com/security/center/content/CiscoSecurityAdvisory/cisco-sa-20150612-openssl
- http://fortiguard.com/advisory/openssl-vulnerabilities-june-2015