故障描述:
. v1 V0 c) `! `2 K* |7 \- b退出登录时出现”您当前的访问请求当中含有非法字符,已经被系统拒绝“错误。
: X2 M5 W! \$ x3 ]/ L$ G- ~
解决方法:
" D' h2 u) |$ U% k打开 sourceclassdiscuzdiscuz_application.php 文件
9 H# l: j& X- z8 d- `找到
% R( p. m% g) E, M0 `! `
private function _xss_check() {
. E. B8 `- \1 _9 K
+ s7 p4 T# ~6 Y, f# N. T2 [ static $check = array('"', '>', '<', ''', '(', ')', 'CONTENT-TRANSFER-ENCODING');
7 q# {7 r' a! V( v/ |9 r8 s5 y7 w; Q" w9 P
if(isset($_GET['formhash']) && $_GET['formhash'] !== formhash()) {
$ _2 j6 ^% t7 I9 G5 C system_error('request_tainting');
& I7 k& c% W* ]4 O4 @1 Q
}
* A1 d) \& J' \3 o" d& x4 ?" _
2 a1 O" P$ b4 l' f$ \
if($_SERVER['REQUEST_METHOD'] == 'GET' ) {
# ?. a* d( D- ?2 n) t, a+ K
$temp = $_SERVER['REQUEST_URI'];
* _2 v" ^4 ~3 R; n& z& G- Q6 P } elseif(empty ($_GET['formhash'])) {
0 Q& \6 a; X4 q
$temp = $_SERVER['REQUEST_URI'].file_get_contents('php://input');
7 V! s0 }* |+ p6 ]- w( ~7 ]
} else {
7 X1 O- T& H5 C2 U; I$ y( O
$temp = '';
4 B: f6 \" L8 r8 i2 d$ R& s f6 _- N
}
3 E0 ^: @4 r! \3 [. A0 h' G
" v/ y5 a" h( t( T" o: I if(!empty($temp)) {
# Y& A& E) o# O. @) O" n
$temp = strtoupper(urldecode(urldecode($temp)));
I* ` M# C7 f5 s* X
foreach ($check as $str) {
6 c$ t, g l7 z if(strpos($temp, $str) !== false) {
9 |- ~; i0 h) ]( Y' Z6 y4 Z3 q6 A
system_error('request_tainting');
& y6 G$ p) i5 B* t }
: g* \! ?( e1 u; i' j2 e }
/ z9 ?: R/ Q8 G
}
. [# i K n) E: [2 l$ W, M# P/ n& ^: a) v/ X# \
return true;
$ c$ y" W, V$ o7 g* {
}
5 v% P Y1 u" h6 M+ p1 i
修改为
+ |: i/ i, n0 m5 z- O/ E' W
private function _xss_check() {
. h ]( M* N6 p1 d5 F $temp = strtoupper(urldecode(urldecode($_SERVER['REQUEST_URI'])));
1 T. J9 Y6 c n if(strpos($temp, '<') !== false || strpos($temp, '"') !== false || strpos($temp, 'CONTENT-TRANSFER-ENCODING') !== false) {
1 P( k3 }& z! H. l5 ~! {
system_error('request_tainting');
$ o' j! i2 c( D3 ?9 E }
9 M) }9 T! g+ n1 B% { return true;
" e& ^+ C6 q2 g2 e: |
}
) ]* I; U& Y0 ?