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Exception for function prevent_get_csrf

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myvesta 2021-08-29 11:50:22 +02:00 • committed by GitHub
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1 changed files with 21 additions and 16 deletions
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37
web/inc/secure_login.php
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@ -79,22 +79,27 @@ function prevent_post_csrf ($hard_check=false) {
}
}
function prevent_get_csrf ($hard_check=false) {
if (file_exists('/usr/local/vesta/conf_web/dont_check_csrf')) return;
if (isset($_SERVER['HTTP_HOST']) == false) return;
if (isset($_SERVER['SERVER_PORT']) == false) return;
if (isset($_SERVER['HTTP_REFERER']) == false) return;
$_SERVER['HTTP_HOST'] = strtolower($_SERVER['HTTP_HOST']);
$_SERVER['HTTP_ORIGIN'] = strtolower($_SERVER['HTTP_ORIGIN']);
if (substr($_SERVER['HTTP_REFERER'], 0, 8) != "file:///" && substr($_SERVER['HTTP_REFERER'], 0, 7) != "http://" && substr($_SERVER['HTTP_REFERER'], 0, 8) != "https://") return;
$host_arr = explode(":", $_SERVER['HTTP_HOST']);
$hostname = $host_arr[0];
$port = $_SERVER['SERVER_PORT'];
$expected_http_referer = "https://".$hostname.":".$port;
$expected_http_referer_length = strlen($expected_http_referer);
if (substr($_SERVER['HTTP_REFERER'], 0, $expected_http_referer_length) != $expected_http_referer) {
die ("You clicked on someone's link from other site.<br />This is just a protection layer to prevent potentially dangerous clicks, so if it was your link - you can <a href=\"".$expected_http_referer.$_SERVER['REQUEST_URI']."\"><b>proceed safely to your hosting panel</b></a>.<br /><br />Technical details:<br />Your browser sent HTTP_REFERER with value: <b>".$_SERVER['HTTP_REFERER']."</b><br />myVesta expected HTTP_REFERER to begin with value: <b>".$expected_http_referer."</b><br />If you got this error during casual work in your hosting panel, probably some browser extension is blocking HTTP_REFERER... disable all browser extensions and try again (or try to login with other browser).<br />If you are system administrator of this server, you can disable CSRF check by doing (as root, in SSH): <b>mkdir /usr/local/vesta/conf_web && touch /usr/local/vesta/conf_web/dont_check_csrf</b><br >(but we don't recommend it)<br />If you are not system administrator of this server and you can't access the hosting panel even you clicked \"<b>proceed safely to your hosting panel</b>\" and disabled all browser extensions or changed the browser, please copy-paste this message to the system administrator of this server.<br />Once again, before you disable CSRF check, try to click \"<b>proceed safely to your hosting panel</b>\", and if that does not help then try to disable all browser extensions or try to login with other browser.");
}
function prevent_get_csrf () {
global $login_url;
if (file_exists('/usr/local/vesta/conf_web/dont_check_csrf')) return;
if ($_SERVER['REQUEST_METHOD'] == "GET") {
if (isset($_GET[$login_url])) return;
if ($_SERVER['REQUEST_URI']=="" || $_SERVER['REQUEST_URI']=="/" || $_SERVER['REQUEST_URI']=="/login/" || $_SERVER['REQUEST_URI']=="/list/web/") return;
}
if (isset($_SERVER['HTTP_HOST']) == false) return;
if (isset($_SERVER['SERVER_PORT']) == false) return;
if (isset($_SERVER['HTTP_REFERER']) == false) return;
$_SERVER['HTTP_HOST'] = strtolower($_SERVER['HTTP_HOST']);
$_SERVER['HTTP_ORIGIN'] = strtolower($_SERVER['HTTP_ORIGIN']);
if (substr($_SERVER['HTTP_REFERER'], 0, 8) != "file:///" && substr($_SERVER['HTTP_REFERER'], 0, 7) != "http://" && substr($_SERVER['HTTP_REFERER'], 0, 8) != "https://") return;
$host_arr = explode(":", $_SERVER['HTTP_HOST']);
$hostname = $host_arr[0];
$port = $_SERVER['SERVER_PORT'];
$expected_http_referer = "https://".$hostname.":".$port;
$expected_http_referer_length = strlen($expected_http_referer);
if (substr($_SERVER['HTTP_REFERER'], 0, $expected_http_referer_length) != $expected_http_referer) {
die ("You clicked on someone's link from other site.<br />This is just a protection layer to prevent potentially dangerous clicks, so if it was your link - you can <a href=\"".$expected_http_referer.$_SERVER['REQUEST_URI']."\"><b>proceed safely to your hosting panel</b></a>.<br /><br />Technical details:<br />Your browser sent HTTP_REFERER with value: <b>".$_SERVER['HTTP_REFERER']."</b><br />myVesta expected HTTP_REFERER to begin with value: <b>".$expected_http_referer."</b><br />If you got this error during casual work in your hosting panel, probably some browser extension is blocking HTTP_REFERER... disable all browser extensions and try again (or try to login with other browser).<br />If you are system administrator of this server, you can disable CSRF check by doing (as root, in SSH): <b>mkdir /usr/local/vesta/conf_web && touch /usr/local/vesta/conf_web/dont_check_csrf</b><br >(but we don't recommend it)<br />If you are not system administrator of this server and you can't access the hosting panel even you clicked \"<b>proceed safely to your hosting panel</b>\" and disabled all browser extensions or changed the browser, please copy-paste this message to the system administrator of this server.<br />Once again, before you disable CSRF check, try to click \"<b>proceed safely to your hosting panel</b>\", and if that does not help then try to disable all browser extensions or try to login with other browser.");
}
}
// Preventing all CSRFs