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Date: Wed, 03 Feb 2016 19:59:17 -0600
From: "Asterisk Security Team" <security@...erisk.org>
To: fulldisclosure@...lists.org
Subject: [FD] AST-2016-001: BEAST vulnerability in HTTP server
Asterisk Project Security Advisory - AST-2016-001
Product Asterisk
Summary BEAST vulnerability in HTTP server
Nature of Advisory Unauthorized data disclosure due to
man-in-the-middle attack
Susceptibility Remote unauthenticated sessions
Severity Minor
Exploits Known Yes
Reported On 04/15/15
Reported By Alex A. Welzl
Posted On 02/03/16
Last Updated On February 3, 2016
Advisory Contact Joshua Colp <jcolp AT digium DOT com>
CVE Name Pending
Description The Asterisk HTTP server currently has a default
configuration which allows the BEAST vulnerability to be
exploited if the TLS functionality is enabled. This can
allow a man-in-the-middle attack to decrypt data passing
through it.
Resolution Additional configuration options have been added to Asterisk
which allow configuration of the HTTP server to not be
susceptible to the BEAST vulnerability. These include
options to confirm the permitted ciphers, to control what
TLS protocols are allowed, and to use server cipher
preference order instead of client preference order. The
default configuration has also been changed for the HTTP
server to use a configuration which is not susceptible to
the BEAST vulnerability.
Affected Versions
Product Release
Series
Asterisk Open Source 1.8.x All Versions
Asterisk Open Source 11.x All Versions
Asterisk Open Source 12.x All Versions
Asterisk Open Source 13.x All Versions
Certified Asterisk 1.8.28 All Versions
Certified Asterisk 11.6 All Versions
Certified Asterisk 13.1 All Versions
Corrected In
Product Release
Asterisk Open Source 11.21.1, 13.7.1
Certified Asterisk 11.6-cert12, 13.1-cert3
Patches
SVN URL Revision
http://downloads.asterisk.org/pub/security/AST-2016-001-1.8.28.diff Certified
Asterisk
1.8.28
http://downloads.asterisk.org/pub/security/AST-2016-001-11.6.diff Certified
Asterisk
11.6
http://downloads.asterisk.org/pub/security/AST-2016-001-13.1.diff Certified
Asterisk
13.1
http://downloads.asterisk.org/pub/security/AST-2016-001-11.diff Asterisk
11
http://downloads.asterisk.org/pub/security/AST-2016-001-12.diff Asterisk
12
http://downloads.asterisk.org/pub/security/AST-2016-001-13.diff Asterisk
13
Links https://issues.asterisk.org/jira/browse/ASTERISK-24972
Asterisk Project Security Advisories are posted at
http://www.asterisk.org/security
This document may be superseded by later versions; if so, the latest
version will be posted at
http://downloads.digium.com/pub/security/AST-2016-001.pdf and
http://downloads.digium.com/pub/security/AST-2016-001.html
Revision History
Date Editor Revisions Made
3 August, 2015 Joshua Colp Initial creation of document
Asterisk Project Security Advisory - AST-2016-001
Copyright (c) 2015 Digium, Inc. All Rights Reserved.
Permission is hereby granted to distribute and publish this advisory in its
original, unaltered form.
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