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TITLE:
Grandstream GXV3000 Eavesdropping and Denial of Service Vulnerability

SECUNIA ADVISORY ID:
SA26568

VERIFY ADVISORY:
http://secunia.com/advisories/26568/

CRITICAL:
Moderately critical

IMPACT:
Security Bypass, Exposure of sensitive information, DoS

WHERE:
>From remote

OPERATING SYSTEM:
Grandstream GXV3000 IP Video Phone
http://secunia.com/product/15436/

DESCRIPTION:
A vulnerability has been reported in the Grandstream GXV3000 IP Video
Phone, which can be exploited by malicious people to cause a DoS
(Denial of Service) and eavesdrop with vulnerable devices.

The vulnerability is caused due to an unspecified error in the SIP
stack and can be exploited to set the phone to an inconsistent state
by sending an "INVITE" and a "183 Session Progress" message sequence.
This allows an attacker to eavesdrop with the device and also disables
it to hang up.

The vulnerability is reported in firmware version 1.0.1.7. Other
versions may also be affected.

SOLUTION:
Reportedly fixed in version 1.0.1.12. Contact the vendor for more
information.

PROVIDED AND/OR DISCOVERED BY:
Humberto J. Abdelnur, Radu State, and Olivier Festor

ORIGINAL ADVISORY:
http://lists.grok.org.uk/pipermail/full-disclosure/2007-August/065417.html

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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.

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