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。

) F8 F/ q5 }$ U1 ?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:
-------------
  q( m% z' x+ }113: if (!empty($_GET['dl']) && file_exists(PHPWG_ROOT_PATH.$conf['data_location'].'pwg_'.$_GET['dl']))
: o: N# n0 ?# N4 M4 G" {5 m, \8 l: {114: {
115:   $filename = PHPWG_ROOT_PATH.$conf['data_location'].'pwg_'.$_GET['dl'];
116:   header('Cache-Control: no-cache, must-revalidate');
- Z6 r! Z4 R2 @+ I) K117:   header('Pragma: no-cache');
118:   header('Content-Disposition: attachment; filename="database.inc.php"');
  c* N/ [3 |( V! r7 q1 \: w119:   header('Content-Transfer-Encoding: binary');
120:   header('Content-Length: '.filesize($filename));
121:   echo file_get_contents($filename);
/ N  Z% }  e7 }8 t+ F: D122:   unlink($filename);
0 v2 K7 ]% h2 M+ W7 D( ~123:   exit();
124: }
====================================================================

# l( I! }$ [, C8 rTested on: Microsoft Windows 7 Ultimate SP1 (EN)
           Apache 2.4.2 (Win32)
9 Q1 T& M7 q. A$ a: ?% `$ k8 K6 M2 q           PHP 5.4.4
0 i+ i: I5 P9 t) D2 c+ h& S5 p           MySQL 5.5.25a

Vulnerability discovered by Gjoko 'LiquidWorm' Krstic
+ U7 ^3 w6 ?8 |" P3 N1 `% o4 v                            @zeroscience

$ B3 J3 g# \' aAdvisory ID: ZSL-2013-5127
7 H, I( K( o- l$ jAdvisory URL: http://www.zeroscience.mk/en/vulnerabilities/ZSL-2013-5127.php
* F5 I2 g  `+ z* N1 KVendor Patch: http://piwigo.org/bugs/view.php?id=2843

15.02.2013

--
http://localhost/piwigo/install.php?dl=../../../../../../lio_passwords.txt
. e6 N' X, ?9 F
& E+ X  b: e/ J- A1 |& e