SSL: SSLv2 Traffic Identified
This signature detects SSLv2 traffic over the network. It is a legacy protocol and its usage is discouraged.
Extended Description
The SSLv2 protocol, as used in OpenSSL before 1.0.1s and 1.0.2 before 1.0.2g and other products, requires a server to send a ServerVerify message before establishing that a client possesses certain plaintext RSA data, which makes it easier for remote attackers to decrypt TLS ciphertext data by leveraging a Bleichenbacher RSA padding oracle, aka a "DROWN" attack.
Affected Products
Pulsesecure client
References
CVE: CVE-2016-0800
URL: https://datatracker.ietf.org/doc/rfc6176/ https://drownattack.com/
Short Name
SSL:AUDIT:SSL-V2-TRAFFIC
Severity
Info
Recommended
False
Recommended Action
None
Category
SSL
Keywords
CVE-2016-0800 Identified SSLv2 Traffic
Release Date
10/20/2014
Supported Platforms
mx-19.3
vmx-19.3
vsrx-19.2
srx-19.3
srx-branch-19.3
vsrx3bsd-19.2
srx-19.4
vsrx3bsd-19.4
srx-branch-19.4
vsrx-19.4
vmx-19.4
mx-19.4
srxevo-25.4
vsrx-26.2
srx-26.2
srx-branch-26.2
vsrx3bsd-26.2
mx-12.3
srx-12.3
srx-branch-12.3
vsrx-12.3
Sigpack Version
3590
False Positive
Rarely
Vendors
Openssl
Pulsesecure
CVSS Score
4.3