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TITLE:
D-Link Router DI-524 HNAP Security Bypass Vulnerability

SECUNIA ADVISORY ID:
SA38214

VERIFY ADVISORY:
http://secunia.com/advisories/38214/

DESCRIPTION:
A vulnerability has been reported in the D-Link router DI-524, which
can be exploited by malicious users to bypass certain security
restrictions.

The vulnerability is caused due to the HNAP (Home Network
Administration Protocol) implementation not properly restricting
access to certain administrative functionality. This can be exploited
by a normal user to e.g. set the administrator's password via a
specially crafted HNAP request.

Successful exploitation requires valid user credentials.

The vulnerability is reported in DI-524 hardware version C1 with
firmware version 3.23. Other models and firmware versions may also be
affected.

SOLUTION:
Restrict access to trusted users only.

PROVIDED AND/OR DISCOVERED BY:
SourceSec DevTeam

ORIGINAL ADVISORY:
http://www.sourcesec.com/Lab/dlink_hnap_captcha.pdf

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