----------------------------------------------------------------------

2003: 2,700 advisories published
2004: 3,100 advisories published
2005: 4,600 advisories published
2006: 5,300 advisories published

How do you know which Secunia advisories are important to you?

The Secunia Vulnerability Intelligence Solutions allows you to filter
and structure all the information you need, so you can address issues
effectively.

Get a free trial of the Secunia Vulnerability Intelligence Solutions:
http://corporate.secunia.com/how_to_buy/38/vi/?ref=secadv

----------------------------------------------------------------------

TITLE:
Asterisk Registration Database Security Bypass

SECUNIA ADVISORY ID:
SA28149

VERIFY ADVISORY:
http://secunia.com/advisories/28149/

CRITICAL:
Less critical

IMPACT:
Security Bypass

WHERE:
>From remote

SOFTWARE:
Asterisk Business Edition 2.x
http://secunia.com/product/14820/
Asterisk 1.x
http://secunia.com/product/2155/

DESCRIPTION:
A security issue has been reported in Asterisk, which can be
exploited by malicious people to bypass certain security
restrictions.

The security issue is caused due to missing checks of IP addresses
when processing database-based registrations ("realtime"). This can
be exploited to authenticate as a legitimate user without a
password.

Successful exploitation requires that host-based authentication is
used and that the attacker has knowledge of a valid username.

The security issue affects the following products and versions:
* Asterisk Open Source 1.2.x prior to 1.2.26
* Asterisk Open Source 1.4.x prior to 1.4.16
* Asterisk Business Edition B.x.x prior to B.2.3.6
* Asterisk Business Edition C.x.x prior to C.1.0-beta8

SOLUTION:
Update to a fixed version.

Asterisk Open Source 1.2.x:
Update to version 1.2.26.

Asterisk Open Source 1.4.x:
Update to version 1.4.16.

Asterisk Business Edition B.x.x:
Update to version B.2.3.6.

Asterisk Business Edition C.x.x:
Fixed in version C.1.0-beta8.

PROVIDED AND/OR DISCOVERED BY:
Reported by the vendor.

ORIGINAL ADVISORY:
http://downloads.digium.com/pub/security/AST-2007-027.pdf

----------------------------------------------------------------------

About:
This Advisory was delivered by Secunia as a free service to help
everybody keeping their systems up to date against the latest
vulnerabilities.

Subscribe:
http://secunia.com/secunia_security_advisories/

Definitions: (Criticality, Where etc.)
http://secunia.com/about_secunia_advisories/


Please Note:
Secunia recommends that you verify all advisories you receive by
clicking the link.
Secunia NEVER sends attached files with advisories.
Secunia does not advise people to install third party patches, only
use those supplied by the vendor.

----------------------------------------------------------------------

Unsubscribe: Secunia Security Advisories
http://secunia.com/sec_adv_unsubscribe/?email=packet%40packetstormsecurity.org

----------------------------------------------------------------------