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TITLE:
Asterisk Unspecified SIP Packet Handling Denial of Service

SECUNIA ADVISORY ID:
SA24380

VERIFY ADVISORY:
http://secunia.com/advisories/24380/

CRITICAL:
Moderately critical

IMPACT:
DoS

WHERE:
>From remote

SOFTWARE:
Asterisk 1.x
http://secunia.com/product/2155/

DESCRIPTION:
A vulnerability has been reported in Asterisk, which can be exploited
by malicious people to cause a DoS (Denial of Service).

The vulnerability is caused due to an unspecified error when handling
received SIP packets. This can be exploited to cause the service to
crash via a specially crafted SIP packet sent to default port
5060/UDP.

SOLUTION:
Update to version 1.4.1 or 1.2.16.

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

ORIGINAL ADVISORY:
Asterisk:
http://asterisk.org/node/48320
http://asterisk.org/node/48319

OTHER REFERENCES:
US-CERT VU#228032:
http://www.kb.cert.org/vuls/id/228032

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About:
This Advisory was delivered by Secunia as a free service to help
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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.

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