Merge pull request from GHSA-7cmj-g5qc-pj88

* QA: Fixing Package Import CVE

For now, we will only accept the Cacti public keys until such time as we are a registered CNA and have the ability to verify third parties or we make other arrangements.

* QA: The keys in our package have trailing spaces

lib/import.php

@@ -303,13 +303,32 @@ function import_xml_data(&$xml_data, $import_as_new, $profile_id, $remove_orphan
 	return $info_array;
 }
 
+function is_cacti_public_key($public_key) {
+	$public_key = trim($public_key);
+	$keys[] = get_public_key_sha1();
+	$keys[] = get_public_key_sha256();
+
+	foreach($keys as $key) {
+		if ($public_key === $key) {
+			return true;
+		}
+	}
+
+	return false;
+}
+
+function get_public_key_sha1() {
+	return get_public_key();
+}
+
+function get_public_key_sha256() {
+	$public_key = "-----BEGIN PUBLIC KEY-----\nMIIBIjANBgkqhkiG9w0BAQEFAAOCAQ8AMIIBCgKCAQEApH0rQ6cEYMCeHh5b7zCw\n5Mxzrj5N6PNW4NJE6YvjpzR40SE/B+vGnwpQZB+bmAVPJcn7TgUf5+ZnPoLL7BNn\nfFhDOREzQYhcTGTxTFQ/AD/DdgzyALdWsV14mwkaxKchnY3XZY1Jg/tm+AFOBrEX\n3Oa4pkOf7+V2HXVhbMhWrsoW5/tI8AQBQtzadqxXDGMpwlwKb6QNlUPk1slQFn3e\nk9rpWgq/84OxsJs2MVFyo/Nh6ehu8cE7OYHOJ/1qQ+8w99ro+zllwLqStY3/Z3Bl\nQmGcllo3/LfnWc10aqdtpFOxWcJwzkQ1vvjzAuWYPmW/fNbft3+pRuS7sa2jj/oN\nvQIDAQAB\n-----END PUBLIC KEY-----";
+
+	return $public_key;
+}
+
 function get_public_key() {
-	$public_key = <<<EOD
------BEGIN PUBLIC KEY-----
-MFwwDQYJKoZIhvcNAQEBBQADSwAwSAJBAMbPpuQfwmg93oOGjdLKrAqwEPwvvNjC
-bk2YZiDglh8lQJxNQI9glG1Z/ptvqprFO3iSx9rTP4vzZ0Ek2+EMYTMCAwEAAQ==
------END PUBLIC KEY-----
-EOD;
+	$public_key = "-----BEGIN PUBLIC KEY-----\nMFwwDQYJKoZIhvcNAQEBBQADSwAwSAJBAMbPpuQfwmg93oOGjdLKrAqwEPwvvNjC\nbk2YZiDglh8lQJxNQI9glG1Z/ptvqprFO3iSx9rTP4vzZ0Ek2+EMYTMCAwEAAQ==\n-----END PUBLIC KEY-----";
 
 	return $public_key;
 }
@@ -375,6 +394,11 @@ function import_package_get_details($xmlfile) {
 function import_read_package_data($xmlfile, &$public_key) {
 	$public_key = import_package_get_public_key($xmlfile);
 
+	if (!is_cacti_public_key($public_key)) {
+		cacti_log('FATAL: Package Public Key is not Official Cacti Public Key for Package ' . $filename, true, 'IMPORT', POLLER_VERBOSITY_LOW);
+		return false;
+	}
+
 	$filename = "compress.zlib://$xmlfile";
 
 	$f   = fopen($filename, 'r');