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[Discuz X3.2] Discuz! System Error---函嗅閮芸隢瘙嗡葉急瘜摮蝚佗撌脩鋡怎頂蝯望蝯[2撘萄]

[銴鋆賡包
頝唾唳摰璅撅
璅銝
潸” 2015-7-19 20:45:45 | 芰閰脖 |芰憭批 撣 |摨閬 |梯璅∪
砍敺 IT_man 2015-7-19 20:51 蝺刻摩 3 q) w' z2 J" l/ b) F1 M

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/ U0 S+ R5 T( }6 }" A( ohttp://www.alexa.com/  園Y憒銝憿- G; t! q$ V: f' }' i

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閫瘙箸寞憒銝:
. d( z! l0 [5 f* d; T" Rsource\class\discuzdiscuz_application.php曉( O/ v* l$ P+ X2 E9 E
  1. private function _xss_check() {) m+ S3 l  _) y& M  a, `
  2. 1 O# s! h( Q3 E2 f1 h
  3.   static $check = array('"', '>', '<', '\'', '(', ')', 'CONTENT-TRANSFER-ENCODING');9 D( ^( |3 k) }+ U9 i
  4. 6 O5 [( G  {1 w& W9 _
  5.   if(isset($_GET['formhash']) && $_GET['formhash'] !== formhash()) {7 G3 `) w' Q! \# R* G( h2 l2 I9 l& G
  6.     system_error('request_tainting');
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  7.   }% Y2 c9 D2 D8 P1 o+ W1 L

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  9.   if($_SERVER['REQUEST_METHOD'] == 'GET' ) {5 Q; A& Z! Q+ F+ F9 {% M# ]% D
  10.     $temp = $_SERVER['REQUEST_URI'];" y5 l. r; t: p% u0 \1 E
  11.   } elseif(empty ($_GET['formhash'])) {
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  12.     $temp = $_SERVER['REQUEST_URI'].file_get_contents('php://input');  M; Q$ Z" q7 O
  13.   } else {) S# U; B0 ~5 i2 L0 D% O# \
  14.     $temp = '';
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  15.   }+ W0 O3 G  q0 s# ]% Y9 S

  16. + w% q. Q% D. o) Q) Q
  17.   if(!empty($temp)) {
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  18.     $temp = strtoupper(urldecode(urldecode($temp)));6 I  h, |9 T( p  k$ B( [; P
  19.     foreach ($check as $str) {2 m1 m4 u* }4 ~' z! }7 Q* |- x0 `! a
  20.       if(strpos($temp, $str) !== false) {
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  21.       system_error('request_tainting');% ?! ?. U/ O+ ^. _
  22.     }
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  23.   }
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  24.                 }; C- j0 H/ L, M- W" b2 s1 f
  25. 7 ~- H, R& c7 [) v- \/ I* @
  26.                 return true;
銴鋆賭誨蝣
湔挾銴鋆賣:

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  1. private function _xss_check() {. W0 M3 O" E# D! w' L
  2.                 $temp = strtoupper(urldecode(urldecode($_SERVER['REQUEST_URI'])));' B. R$ x3 c  e/ z* l3 p
  3.                 if(strpos($temp, '<') !== false || strpos($temp, '"') !== false || strpos($temp, 'CONTENT-TRANSFER-ENCODING') !== false) {: u5 _4 i5 [& ?5 U. K' [: l, G- a
  4.                         system_error('request_tainting');4 |3 C" ?0 `/ }1 q' j! v3 A& `3 B: B' E
  5.                 }" n& b: T9 @, N; t3 r# v1 v
  6.                 return true;& W1 w! d5 Q5 p9 u1 f
  7.         }
銴鋆賭誨蝣

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