Piwigo任意文件泄露和任意文件删除漏洞

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Piwigo是用PHP编写的相册脚本。

  ^; P+ {  \; T5 ]) @) DPiwigo 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。
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* D1 D3 i  O7 `( M8 N. F- Q/install.php:
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* i& d) ~1 N" Y( x113: if (!empty($_GET['dl']) && file_exists(PHPWG_ROOT_PATH.$conf['data_location'].'pwg_'.$_GET['dl']))
7 C! w* _9 r; f4 l* x114: {
115:   $filename = PHPWG_ROOT_PATH.$conf['data_location'].'pwg_'.$_GET['dl'];
8 C8 E, a6 n# F7 {116:   header('Cache-Control: no-cache, must-revalidate');
. Q. q; H) y) L  ?117:   header('Pragma: no-cache');
118:   header('Content-Disposition: attachment; filename="database.inc.php"');
) e% c9 z6 N- X( k' u119:   header('Content-Transfer-Encoding: binary');
120:   header('Content-Length: '.filesize($filename));
121:   echo file_get_contents($filename);
122:   unlink($filename);
123:   exit();
124: }
====================================================================

Tested on: Microsoft Windows 7 Ultimate SP1 (EN)
           Apache 2.4.2 (Win32)
           PHP 5.4.4
8 q+ l4 x; h7 ~           MySQL 5.5.25a

0 U6 Y3 H. E; A# _0 `5 k1 S' @9 h: hVulnerability discovered by Gjoko 'LiquidWorm' Krstic
: X7 U! B, o8 t7 A                            @zeroscience

/ d& k& N6 Q7 _; r( L  Z( P0 N* e8 {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
# {5 h# J9 W" e# T: l6 l. ?
15.02.2013

5 s  m  F# P" ^0 Z7 H4 t--
$ m) V* R( V  T7 k- nhttp://localhost/piwigo/install.php?dl=../../../../../../lio_passwords.txt

3 d/ z6 g0 ^( i, e( I$ E