Mozilla Network Security Services TLS State Machine Weak Encryption Vulnerability (CVE-2015-2721)

  Severity: CRITICAL
  Advisory Date: JUN 09, 2016

  DESCRIPTION

Mozilla Network Security Services (NSS) before 3.19, as used in Mozilla Firefox before 39.0, Firefox ESR 31.x before 31.8 and 38.x before 38.1, Thunderbird before 38.1, and other products, does not properly determine state transitions for the TLS state machine, which allows man-in-the-middle attackers to defeat cryptographic protection mechanisms by blocking messages, as demonstrated by removing a forward-secrecy property by blocking a ServerKeyExchange message, aka a "SMACK SKIP-TLS" issue.

  TREND MICRO PROTECTION INFORMATION

Apply associated Trend Micro DPI Rules.

  SOLUTION

  Trend Micro Deep Security DPI Rule Number: 1006546

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