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  Secunia CSI
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TITLE:
uTorrent Web UI Basic Authorization Header Parsing Denial of Service

SECUNIA ADVISORY ID:
SA39192

VERIFY ADVISORY:
http://secunia.com/advisories/39192/

DESCRIPTION:
zombiefx 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 a NULL pointer dereference error
in WebUI when processing an invalid basic authorization string that
does not contain a user-id and password as expected.

Successful exploitation allows crashing the application, but requires
that the Web UI interface is enabled (disabled by default).

The vulnerability is confirmed in version 2.0 build 18907. Other
versions may also be affected.

SOLUTION:
Restrict access to the WebUI.

PROVIDED AND/OR DISCOVERED BY:
zombiefx

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