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

SECUNIA ADVISORY ID:
SA28686

VERIFY ADVISORY:
http://secunia.com/advisories/28686/

CRITICAL:
Less critical

IMPACT:
DoS

WHERE:
>From remote

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

DESCRIPTION:
Luigi Auriemma 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 multiple HTTP requests with an overly-long "Range" header
string.

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

The vulnerability is confirmed in version 1.7.6 (build 7859) on
Windows. Other versions may also be affected.

SOLUTION:
Update to version 1.7.7 (build 8179).
http://download.utorrent.com/1.7.7/utorrent.exe

PROVIDED AND/OR DISCOVERED BY:
Luigi Auriemma

ORIGINAL ADVISORY:
http://aluigi.altervista.org/adv/ruttorrent2-adv.txt

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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:
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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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