FreeBSD : OpenSSL -- CMS and S/MIME Bleichenbacher attack (60eb344e-6eb1-11e1-8ad7-00e0815b8da8)

This script is Copyright (C) 2012-2015 Tenable Network Security, Inc.

Synopsis :

The remote FreeBSD host is missing a security-related update.

Description :

The OpenSSL Team reports :

A weakness in the OpenSSL CMS and PKCS #7 code can be exploited using
Bleichenbacher's attack on PKCS #1 v1.5 RSA padding also known as the
million message attack (MMA).

Only users of CMS, PKCS #7, or S/MIME decryption operations are
affected. A successful attack needs on average 2^20 messages. In
practice only automated systems will be affected as humans will not be
willing to process this many messages.

SSL/TLS applications are *NOT* affected by this problem since the
SSL/TLS code does not use the PKCS#7 or CMS decryption code.

See also :

Solution :

Update the affected package.

Risk factor :

Medium / CVSS Base Score : 5.0
CVSS Temporal Score : 4.3
Public Exploit Available : false

Family: FreeBSD Local Security Checks

Nessus Plugin ID: 58360 ()

Bugtraq ID: 52428

CVE ID: CVE-2012-0884

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