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Moderately critical

Asterisk Two Vulnerabilities

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Release Date:  2012-08-31    Views:  1,672

Secunia Advisory SA50456

Where:

From remote

Impact:

Security Bypass, System access

Solution Status:

Vendor Patch

CVE Reference(s):

Description


Two vulnerabilities have been reported in Asterisk, which can be exploited by malicious users to bypass certain security restrictions and compromise a vulnerable system.

1) An error within the Asterisk Manager Interface when handling "originate" actions does not properly restrict access and can be exploited to execute arbitrary shell commands via the “ExternalIVR" application action.

This is related to vulnerability #1 in:
SA48891

Successful exploitation of this vulnerability requires an attacker to have the ability to place calls.

2) An error when making IAX2 calls on behalf of a peer may result in certain ACL rules to be ignored for the call attempt.

Successful exploitation of this vulnerability requires an attacker to have credentials of a peer defined in a dynamic Asterisk Realtime Architecture (ARA) backend.

Please see the vendor's advisory for a list of affected versions.


Solution:
Apply patches (please see the vendor's advisory for details).

Provided and/or discovered by:
The vendor credits:
1) Zubair Ashraf, IBM X-Force Research.
2) Alan Frisch.

Original Advisory:
http://downloads.asterisk.org/pub/security/AST-2012-012.html
http://downloads.asterisk.org/pub/security/AST-2012-013.html

Deep Links:
Links available to Secunia VIM customers

Do you have additional information related to this advisory?

Please provide information about patches, mitigating factors, new versions, exploits, faulty patches, links, and other relevant data by posting comments to this Advisory. You can also send this information to vuln@secunia.com

Subject: Asterisk Two Vulnerabilities

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