SecurityvulnsSECURITYVULNS:DOC:26517DoS, CSRF and XSS vulnerabilities in ADSL modem Callisto 821+
Hello 3APA3A!
I want to warn you about new security vulnerabilities in ADSL modem
Callisto 821+ (SI2000 Callisto821+ Router).
These are Denial of Service, 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).
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 DoS, CSRF or XSS attack.
DoS (WASC-10):
http://192.168.1.1/configuration/qbridgestatsclearintfstats.html
http://192.168.1.1/configuration/qbridgestatsflushintf.html
http://192.168.1.1/configuration/qbridgevlanstatsclear.html
At these requests the restart of modem occurs, at which both admin
panel and modem itself aren't accessible (so connection to Internet
is absent).
CSRF (WASC-09):
This vulnerability allows to conduct clearing of statistics of
selected VLAN port.
XSS (WASC-08):
On above-mentioned page there is a persistent XSS vulnerability.
http://websecurity.com.ua/uploads/2011/Callisto%20821+%20XSS20.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.
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.
I mentioned about these vulnerabilities at my site
(http://websecurity.com.ua/5216/).
Best wishes & regards,
MustLive
Administrator of Websecurity web site
http://websecurity.com.ua