Example #1
0
function shDoSecurityChecks($query = '', $fullCheck = true)
{
    $sefConfig = Sh404sefFactory::getConfig();
    if (!$sefConfig->shSecEnableSecurity) {
        return '';
    }
    $shQuery = empty($query) ? empty($_SERVER['QUERY_STRING']) ? '' : $_SERVER['QUERY_STRING'] : $query;
    // IP checks
    $ip = empty($_SERVER['REMOTE_ADDR']) ? '' : $_SERVER['REMOTE_ADDR'];
    $uAgent = empty($_SERVER['HTTP_USER_AGENT']) ? '' : $_SERVER['HTTP_USER_AGENT'];
    // ip White/Black listing
    $shWhiteListedIp = shCheckIPList($ip, $sefConfig->ipWhiteList);
    if (!$shWhiteListedIp) {
        if (shCheckIPList($ip, $sefConfig->ipBlackList)) {
            shDoRestrictedAccess('Blacklisted IP');
        }
    }
    // UserAgent White/Black listing
    $whiteListedUAgent = shCheckUAgentList($uAgent, $sefConfig->uAgentWhiteList);
    if (!$whiteListedUAgent) {
        if (shCheckUAgentList($uAgent, $sefConfig->uAgentBlackList)) {
            shDoRestrictedAccess('BlackListed user agent');
        }
    }
    if (!$shWhiteListedIp && !$whiteListedUAgent && $fullCheck) {
        shDoAntiFloodCheck($ip);
    }
    // url content checks
    $halt = 0;
    while (true) {
        // allow for multiple url decode
        $last = $shQuery;
        $shQuery = urldecode($shQuery);
        // do our tests
        $shQuery = str_replace('&', '&', $shQuery);
        // bad content in query string
        $c = shCheckConfigVars($shQuery);
        if ($c) {
            shDoRestrictedAccess($c . ' in URL');
        }
        $c = shCheckBase64($shQuery);
        if ($c) {
            shDoRestrictedAccess($c . ' in URL');
        }
        $c = shCheckScripts($shQuery);
        if ($c) {
            shDoRestrictedAccess($c . ' in URL');
        }
        $c = shCheckStandardVars($_GET);
        if ($c) {
            shDoRestrictedAccess($c . ' in URL');
        }
        $c = shCheckImgTxtCmd($shQuery);
        // V x
        if ($c) {
            shDoRestrictedAccess($c . ' in URL');
        }
        // Check whether the last decode is equal to the previous one
        if ($shQuery == $last) {
            // Break out of the while if the URI is stable.
            break;
        } else {
            if (++$halt > 10) {
                // Runaway check. URI has been seriously compromised.
                shDoRestrictedAccess('Multiple level of url encode');
            }
        }
    }
    if (!$fullCheck) {
        return;
    }
    // don't check POST and/or Honey pot if second check
    // check POST variables
    if ($sefConfig->shSecCheckPOSTData) {
        $c = shCheckStandardVars($_POST);
        if ($c) {
            shDoRestrictedAccess($c . ' in POST');
        }
        foreach ($_POST as $key => $value) {
            $c = shCheckConfigVars($key . '=' . $value);
            if ($c) {
                shDoRestrictedAccess($c . ' in POST');
            }
            $c = shCheckBase64($key . '=' . $value);
            if ($c) {
                shDoRestrictedAccess($c . ' in POST');
            }
            $c = shCheckScripts($key . '=' . $value);
            if ($c) {
                shDoRestrictedAccess($c . ' in POST');
            }
            $c = shCheckImgTxtCmd($key . '=' . $value);
            // V x
            if ($c) {
                shDoRestrictedAccess($c . ' in POST');
            }
        }
    }
    // do Project Honey Pot check
    if (!$shWhiteListedIp && $sefConfig->shSecCheckHoneyPot) {
        shDoHoneyPotCheck($ip);
    }
}
Example #2
0
function shDoSecurityChecks($query = '', $fullCheck = true)
{
    $sefConfig = shRouter::shGetConfig();
    if (!$sefConfig->shSecEnableSecurity) {
        return '';
    }
    $shQuery = empty($query) ? empty($_SERVER['QUERY_STRING']) ? '' : urldecode($_SERVER['QUERY_STRING']) : urldecode($query);
    $shQuery = str_replace('&', '&', $shQuery);
    $ip = empty($_SERVER['REMOTE_ADDR']) ? '' : $_SERVER['REMOTE_ADDR'];
    $uAgent = empty($_SERVER['HTTP_USER_AGENT']) ? '' : $_SERVER['HTTP_USER_AGENT'];
    // ip White/Black listing
    $shWhiteListedIp = shCheckIPList($ip, $sefConfig->ipWhiteList);
    if (!$shWhiteListedIp) {
        if (shCheckIPList($ip, $sefConfig->ipBlackList)) {
            shDoRestrictedAccess('Blacklisted IP');
        }
    }
    if (!$shWhiteListedIp && $fullCheck) {
        shDoAntiFloodCheck($ip);
    }
    // bad content in query string
    $c = shCheckConfigVars($shQuery);
    if ($c) {
        shDoRestrictedAccess($c . ' in URL');
    }
    $c = shCheckBase64($shQuery);
    if ($c) {
        shDoRestrictedAccess($c . ' in URL');
    }
    $c = shCheckScripts($shQuery);
    if ($c) {
        shDoRestrictedAccess($c . ' in URL');
    }
    $c = shCheckStandardVars($_GET);
    if ($c) {
        shDoRestrictedAccess($c . ' in URL');
    }
    $c = shCheckImgTxtCmd($shQuery);
    // V x
    if ($c) {
        shDoRestrictedAccess($c . ' in URL');
    }
    // UserAgent White/Black listing
    if (!shCheckUAgentList($uAgent, $sefConfig->uAgentWhiteList)) {
        if (shCheckUAgentList($uAgent, $sefConfig->uAgentBlackList)) {
            shDoRestrictedAccess('BlackListed user agent');
        }
    }
    if (!$fullCheck) {
        return;
    }
    // don't check POST and/or Honey pot if second check
    // check POST variables
    if ($sefConfig->shSecCheckPOSTData) {
        foreach ($_POST as $key => $value) {
            $c = shCheckConfigVars($key . '=' . $value);
            if ($c) {
                shDoRestrictedAccess($c . ' in POST');
            }
            $c = shCheckBase64($key . '=' . $value);
            if ($c) {
                shDoRestrictedAccess($c . ' in POST');
            }
            $c = shCheckScripts($key . '=' . $value);
            if ($c) {
                shDoRestrictedAccess($c . ' in POST');
            }
            $c = shCheckStandardVars($_POST);
            if ($c) {
                shDoRestrictedAccess($c . ' in POST');
            }
            $c = shCheckImgTxtCmd($key . '=' . $value);
            // V x
            if ($c) {
                shDoRestrictedAccess($c . ' in POST');
            }
        }
    }
    // do Project Honey Pot check
    if (!$shWhiteListedIp && $sefConfig->shSecCheckHoneyPot) {
        shDoHoneyPotCheck($ip);
    }
}