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TITLE:
Linksys SPA921 Long HTTP Requests Denial of Service

SECUNIA ADVISORY ID:
SA22267

VERIFY ADVISORY:
http://secunia.com/advisories/22267/

CRITICAL:
Less critical

IMPACT:
DoS

WHERE:
>From local network

OPERATING SYSTEM:
Linksys SPA927 VoIP Phone
http://secunia.com/product/12273/

DESCRIPTION:
Shawn Merdinger has reported a vulnerability in the Linksys SPA921
VoIP Phone, which can be exploited by malicious people to cause a DoS
(Denial of Service).

The vulnerability is caused due to errors within the embedded HTTP
server when handling long strings. This can be exploited to reboot
the phone by sending long HTTP requests to it.

The vulnerability has been reported in firmware version 1.0.0. Other
versions may also be affected.

SOLUTION:
Restrict use to within trusted networks only.

PROVIDED AND/OR DISCOVERED BY:
Shawn Merdinger

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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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