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TITLE:
uTorrent Web UI Malformed HTTP "Range" Header Denial of Service

SECUNIA ADVISORY ID:
SA28703

VERIFY ADVISORY:
http://secunia.com/advisories/28703/

CRITICAL:
Less critical

IMPACT:
DoS

WHERE:
>From remote

SOFTWARE:
uTorrent 1.x
http://secunia.com/product/13466/

DESCRIPTION:
Secunia Research has discovered a vulnerability in uTorrent, which
can be exploited by malicious people to cause a DoS (Denial of
Service).

The vulnerability is caused due to an error in the handling of HTTP
requests and can be exploited to cause the application to crash by
sending an HTTP request with a malformed "Range" header string.

Successful exploitation requires that the Web UI interface is enabled
(not default).

The vulnerability is confirmed in version 1.7.7 (build 8179) on
Windows. Other versions may also be affected.

SOLUTION:
The vulnerability is fixed in uTorrent 1.8 Beta (build 10524).

PROVIDED AND/OR DISCOVERED BY:
Dyon Balding, Secunia Research.

ORIGINAL ADVISORY:
Secunia Research:
http://secunia.com/secunia_research/2008-7/

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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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