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
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

SVN URL Revision Certified
1.8.28 Certified
11.6 Certified
13.1 Asterisk
11 Asterisk
12 Asterisk


Asterisk Project Security Advisories are posted at

This document may be superseded by later versions; if so, the latest
version will be posted at and

Commenti (0) Trackback (0)

Spiacenti, il modulo dei commenti è chiuso per ora.

Ancora nessun trackback.