TLS: add detection for malicious heartbeats (AKA heartbleed) #924
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The OpenSSL implementation of RFC 6520 (Heartbeat extension) does not check the payload length correctly, resulting in a copy of at most 64k of memory from the server (ref: CVE-2014-0160). This patch adds support for decoding heartbeat messages (if not encrypted), and checking several parts (type, length and padding). When an anomaly is detected, a TLS event is raised.
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The OpenSSL implementation of RFC 6520 (Heartbeat extension) does not
check the payload length correctly, resulting in a copy of at most 64k
of memory from the server (ref: CVE-2014-0160).
This patch adds support for decoding heartbeat messages (if not
encrypted), and checking several parts (type, length and padding).
When an anomaly is detected, a TLS event is raised.