故障描述:
) V2 y1 e4 k6 W! S; ~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。
' _( U) v7 C3 O6 g$ w& L) R解决方法:
% A) E0 N6 Z6 F0 c3 Y$ ?) P+ b
打开 sourceclassdiscuzdiscuz_application.php 文件
0 J/ ~7 k. F: X' E找到
/ E# \( K; q0 e8 G4 ^8 k. r4 Rprivate function _xss_check() {
d) J3 Y5 h" J) P% A1 S- U# e; H* x1 F/ @7 H
static $check = array('"', '>', '<', ''', '(', ')', 'CONTENT-TRANSFER-ENCODING');
: T; ]2 C4 h( M8 c0 V4 k" n |* h/ m+ X2 z4 ^! v# _; [: Z
if(isset($_GET['formhash']) && $_GET['formhash'] !== formhash()) {
) g/ C1 ~6 b4 X! w: u( Y
system_error('request_tainting');
) o1 p, y6 w( a/ _$ c+ l# C; ^
}
, b$ V$ }% C2 F, [0 {7 _7 X9 a7 u6 Q, X" e6 m$ k
if($_SERVER['REQUEST_METHOD'] == 'GET' ) {
) K d; B: O) w $temp = $_SERVER['REQUEST_URI'];
- [0 K1 n7 j8 _) Q
} elseif(empty ($_GET['formhash'])) {
" b+ p$ x" i8 G) P: H7 x $temp = $_SERVER['REQUEST_URI'].file_get_contents('php://input');
) }( y2 d8 u9 [8 `6 L- ? } else {
0 S! g5 S. d' \, D) ]1 j $temp = '';
7 r* g7 \8 m+ z1 g; e3 W }
0 e. q B& t0 `7 \
: Y, E' o3 G! R+ ^( D4 i if(!empty($temp)) {
& l, \# c% s6 C& z, L, A3 Z2 h
$temp = strtoupper(urldecode(urldecode($temp)));
1 b& N2 O3 A8 w$ Y9 p& ` foreach ($check as $str) {
$ i9 ?6 l" ]5 `) W6 T; z: E
if(strpos($temp, $str) !== false) {
0 ^+ B$ W0 E- C# G* ?5 w8 A
system_error('request_tainting');
; C, u# x {% } k, Q }
( f! J) i/ C0 Y% U/ y* F }
4 `& G: V) v4 }+ M) d' a7 d
}
# M( P) Z$ t: S, ?0 m
' c6 K) Z7 `$ b5 H" W7 n return true;
) k: X y( {4 }) _% ^/ T
}
0 L$ P) l8 s }6 @+ _& ^1 T# g% |
修改为
6 p8 g/ g) N, w7 K! l
private function _xss_check() {
7 J8 \( l7 c$ q $temp = strtoupper(urldecode(urldecode($_SERVER['REQUEST_URI'])));
# x% g# d: z8 |4 v7 n3 G: ?$ e5 Q if(strpos($temp, '<') !== false || strpos($temp, '"') !== false || strpos($temp, 'CONTENT-TRANSFER-ENCODING') !== false) {
7 h! l1 C& F8 N
system_error('request_tainting');
- V' u; n$ p% Y8 m; ~! E# u
}
5 _8 O. O4 w( w6 F2 ^7 e
return true;
* S* R, E' u# ~* |5 ~* _8 u4 Q' r9 S; J}
+ I8 K2 Q* R) D* `# l7 X