This script is Copyright (C) 2014-2016 Tenable Network Security, Inc.
The remote Windows host contains a program that is affected by
The version of stunnel installed on the remote host is prior to
version 5.06. It is, therefore, affected by the following
vulnerabilities in the bundled OpenSSL library :
- An error exists related to DTLS SRTP extension handling
and specially crafted handshake messages that can allow
denial of service attacks via memory leaks.
- An error exists related to the way SSL 3.0 handles
padding bytes when decrypting messages encrypted using
block ciphers in cipher block chaining (CBC) mode. A
man-in-the-middle attacker can decrypt a selected byte
of a cipher text in as few as 256 tries if they are able
to force a victim application to repeatedly send the
same data over newly created SSL 3.0 connections. This
is also known as the 'POODLE' issue. (CVE-2014-3566)
- An error exists related to session ticket handling that
can allow denial of service attacks via memory leaks.
- An error exists related to the build configuration
process and the 'no-ssl3' build option that allows
servers and clients to process insecure SSL 3.0
handshake messages. (CVE-2014-3568)
Note that Nessus has not tested for these issues but has instead
relied only on the application's self-reported version number.
See also :
Upgrade to stunnel version 5.06 or later.
Risk factor :
Medium / CVSS Base Score : 5.0
CVSS Temporal Score : 4.3
Public Exploit Available : false