Kerweb / Kerwin Cross Site Scripting

                Kerweb/Kerwin XSS vulnerabilities

Severity:
Moderate

Vendor:
Schneider Electrics

Versions Affected:
Kerweb < 3.0.1
Kerwin < 6.0.1

Description:
Input fields used for searching and displaying content are not filtered properly.
Thus, the web application suffers from multiple reflected XSS vulnerabilities.
Exploitation is made easier as parameters are passed with GET HTTP method.

Example:
An URL can be forged by injecting code in one of the parameter, like 'evtvariablename' here:
http://<server>/kw.dll?page=evts.xml&sessionid=xxx&nomenu=&typeevtwin=alms&dt=&gtvariablevalue=&ltvariablevalue=&variablevalue=&nevariablevalue=&evtclass=&evtdevicezone=&evtdevicecountry=&evtdeviceregion=&evtstatustype=&evtseveritytype=&evtstatus=&evtseverity=&evtlevel=&gtdateapp=&ltdateapp=&gtdaterec=&ltdaterec=&evtvariablename="</script><script>alert(1)</script>"&evtdevicename=&evtnature=&evttype=&gtduration=&ltduration=&gtdurationvalue=&gtdurationwide=1&ltdurationvalue=&ltdurationwide=1

Vendor status:
Vendor was contacted and a fix was released (with Kerweb 3.0.1 and Kerwin 6.0.1)

Mitigation:
Upgrade to Kerweb 3.0.1 and Kerwin 6.0.1

CVE:
CVE-2012-1990

Timeline:
06/20/2011: vendor disclosure (ticket reference : KN10915)
07/22/2011: vendor response
09/01/2012: fix released
05/05/2012: public disclosure

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