SSL: OpenSSL ChangeCipherSpec MITM Security Bypass

This signature detects attempts to exploit a known security-bypass vulnerability against OpenSSL. A successful exploitation would provide an attacker the ability to decrypt traffic and inject plaintext into a TLS connection.

Extended Description

OpenSSL before 0.9.8za, 1.0.0 before 1.0.0m, and 1.0.1 before 1.0.1h does not properly restrict processing of ChangeCipherSpec messages, which allows man-in-the-middle attackers to trigger use of a zero-length master key in certain OpenSSL-to-OpenSSL communications, and consequently hijack sessions or obtain sensitive information, via a crafted TLS handshake, aka the "CCS Injection" vulnerability.

Affected Products

Nodejs node.js

References

BugTraq: 67899

CVE: CVE-2015-0204

Short Name

SSL:OPENSSL-MITM-SEC-BYPASS

Severity

Major

Recommended

False

Recommended Action

Drop

SSL: OpenSSL ChangeCipherSpec MITM Security Bypass

Extended Description

Affected Products

References

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