FreeBSD : asterisk -- TLS Certificate Common name NULL byte exploit (5fee3f02-de37-11e4-b7c3-001999f8d30b)

This script is Copyright (C) 2015-2016 Tenable Network Security, Inc.


Synopsis :

The remote FreeBSD host is missing one or more security-related
updates.

Description :

The Asterisk project reports :

When Asterisk registers to a SIP TLS device and and verifies the
server, Asterisk will accept signed certificates that match a common
name other than the one Asterisk is expecting if the signed
certificate has a common name containing a null byte after the portion
of the common name that Asterisk expected. For example, if Asterisk is
trying to register to www.domain.com, Asterisk will accept
certificates of the form www.domain.com\x00www.someotherdomain.com

See also :

http://downloads.asterisk.org/pub/security/AST-2015-003.html
http://www.nessus.org/u?71d0ab22

Solution :

Update the affected packages.

Risk factor :

Medium / CVSS Base Score : 4.3
(CVSS2#AV:N/AC:M/Au:N/C:N/I:P/A:N)

Family: FreeBSD Local Security Checks

Nessus Plugin ID: 82650 ()

Bugtraq ID:

CVE ID: CVE-2015-3008

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