K95463126 : OpenSSL vulnerabilities CVE-2016-0703 and CVE-2016-0704

Security Advisory Description

• CVE-2016-0703

The get_client_master_key function in s2_srvr.c in the SSLv2 implementation in OpenSSL before 0.9.8zf, 1.0.0 before 1.0.0r, 1.0.1 before 1.0.1m, and 1.0.2 before 1.0.2a accepts a nonzero CLIENT-MASTER-KEY CLEAR-KEY-LENGTH value for an arbitrary cipher, which allows man-in-the-middle attackers to determine the MASTER-KEY value and decrypt TLS ciphertext data by leveraging a Bleichenbacher RSA padding oracle, a related issue to CVE-2016-0800.

• CVE-2016-0704

An oracle protection mechanism in the get_client_master_key function in s2_srvr.c in the SSLv2 implementation in OpenSSL before 0.9.8zf, 1.0.0 before 1.0.0r, 1.0.1 before 1.0.1m, and 1.0.2 before 1.0.2a overwrites incorrect MASTER-KEY bytes during use of export cipher suites, which makes it easier for remote attackers to decrypt TLS ciphertext data by leveraging a Bleichenbacher RSA padding oracle, a related issue to CVE-2016-0800.
Impact
ARX/Websafe/FirePass/LineRate/Traffix
There is no impact. These F5 products are not vulnerable to these vulnerabilities.
BIG-IP/BIG-IQ/Enterprise Manager
This issue is exposed only to SSLv2 and is related to the DROWN vulnerability (CVE-2016-0800). BIG-IP/BIG-IQ/Enterprise Manager is not vulnerable to these vulnerabilities in the default configuration. F5 recommends that you do not use the SSLv2 protocol, and it is not enabled in the BIG-IP/BIG-IQ/Enterprise Manager default configuration. Configurations that manually enable SSLv2 expose this vulnerability.