[Full-disclosure] Grandstream GXP1405 Executive IP Phone Persistent XSS

[Are You Likeme Now <areulikemenow@xxxxxxxxx>]

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              title: Grandstream GXP1405 Executive IP Phone Persistent XSS
            product: Grandstream Networks
 vulnerable version: 1.0.1.110
             impact: Low
           homepage: www.grandstream.com
              found: 23.10.2012
                 by: aulmn
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Vendor description:

Grandstream Networks is a leading manufacturer of innovative IP voice/video
telephony and video surveillance solutions

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Vulnerability overview/description:

This is cross-site scripting for logged in users.

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Proof of concept:

Go to Your http://ip.of.tel/cgi-bin/login and log in.
Next check card called 'Accounts' and then vulnerable parameter is P134.
Click 'update' and ance again 'continue'. And here Your xss in triggered.
Parameter P2318 is vulnerable too, so I suppose there is more vulnerable
places.

'Conference URL' parameter is also vulnerable to persistent xss.
So if attacker will get your (default? ;)) credentials, then he can set
persistent xss to attack you.

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Vulnerable / tested versions:

Software Version 1.0.1.110

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The vulnerability is verified to exist in ...........,
which is the most recent version at the time of discovery.

Older versions are probably affected as well.

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Vendor contact timeline:
Nope.

Solution:
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Please validate content delivered by your users.

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Advisory URL:
Maybe later.

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Contact:
areulikemenow@xxxxxxxxx

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