SSL: OpenSSL ssl23_get_client_hello Function Denial of Service
This signature detects SSLv3 Traffic over the network. Attackers can make use of it, to modify network transmissions between the client and server.
Extended Description
The ssl23_get_client_hello function in s23_srvr.c in OpenSSL 0.9.8zc, 1.0.0o, and 1.0.1j does not properly handle attempts to use unsupported protocols, which allows remote attackers to cause a denial of service (NULL pointer dereference and daemon crash) via an unexpected handshake, as demonstrated by an SSLv3 handshake to a no-ssl3 application with certain error handling. NOTE: this issue became relevant after the CVE-2014-3568 fix.
Affected Products
Openssl openssl
References
CVE: CVE-2014-3566
Short Name
SSL:SSL-V3-TRAFFC-DOS
Severity
Major
Recommended
True
Recommended Action
Drop
Category
SSL
Keywords
CVE-2014-3566 CVE-2014-3569 Denial Function OpenSSL Service of ssl23_get_client_hello
Release Date
06/14/2015
Supported Platforms
srx-branch-12.3
srx-19.3
srx-branch-19.3
vsrx3bsd-19.2
srx-branch-19.4
vsrx-19.4
mx-12.3
mx-19.4
vmx-19.4
mx-19.3
vsrx3bsd-19.4
srx-19.4
vsrx-12.3
vmx-19.3
vsrx-19.2
srx-12.3
Sigpack Version
3650
False Positive
Unknown
Vendors
Openssl
CVSS Score
5.0
4.3