phpLDAPadmin <= 1.2.1.1 (query_engine) Remote PHP Code Injection Exploit author...............: EgiX mail.................: n0b0d13s[at]gmail[dot]com software link........: http://phpldapadmin.sourceforge.net/ affected versions....: from 1.2.0 to 1.2.1.1 [-] vulnerable code in /lib/functions.php 1002. function masort(&$data,$sortby,$rev=0) { 1003. if (defined('DEBUG_ENABLED') && DEBUG_ENABLED && (($fargs=func_get_args())||$fargs='NOARGS')) 1004. debug_log('Entered (%%)',1,0,__FILE__,__LINE__,__METHOD__,$fargs); 1005. 1006. # if the array to sort is null or empty 1007. if (! $data) return; 1008. 1009. static $CACHE = array(); 1010. 1011. if (empty($CACHE[$sortby])) { 1012. $code = "\$c=0;\n"; 1013. 1014. foreach (explode(',',$sortby) as $key) { 1015. $code .= "if (is_object(\$a) || is_object(\$b)) {\n"; 1016. 1017. $code .= " if (is_array(\$a->$key)) {\n"; 1018. $code .= " asort(\$a->$key);\n"; 1019. $code .= " \$aa = array_shift(\$a->$key);\n"; ... 1078. $code .= 'return $c;'; 1079. 1080. $CACHE[$sortby] = create_function('$a, $b',$code); 1081. } The $sortby parameter passed to 'masort' function isn't properly sanitized before being used in a call to create_function() at line 1080, this can be exploited to inject and execute arbitrary PHP code. The only possible attack vector is when handling the 'query_engine' command, here input passed through $_REQUEST['orderby'] is passed as $sortby parameter to 'masort' function. [-] Disclosure timeline: [30/09/2011] - Vulnerability discovered [02/10/2011] - Issue reported to http://sourceforge.net/support/tracker.php?aid=3417184 [05/10/2011] - Fix committed: http://phpldapadmin.git.sourceforge.net/git/gitweb.cgi?p=phpldapadmin/phpldapadmin;h=76e6dad [23/10/2011] - Public disclosure [-] Proof of concept: http://www.exploit-db.com/exploits/18021/
