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thumb: validate path before extracting missing parts
[minimedit.git]
/
thumb
/
index.php
diff --git
a/thumb/index.php
b/thumb/index.php
index 104e1df53009d99187019e7129e615d9d12c19ac..7de4f456939152bd931f61a15094b4a061ebbe08 100644
(file)
--- a/
thumb/index.php
+++ b/
thumb/index.php
@@
-1,5
+1,10
@@
<?php
<?php
-list ($size, $imgpath) = explode('/', ltrim($Page->path, '/'), 2);
+if (!$User) return;
+$imgpath = ltrim($Page->path, '/');
+if (!preg_match('{^[0-9x]+/}', $imgpath)) {
+ return;
+}
+list ($size, $imgpath) = explode('/', $imgpath, 2);
$imgpath = preg_replace('{^(?=[0-9]+/)}', 'data/', $imgpath, 1);
if (!file_exists($imgpath)) {
$imgpath = preg_replace('{^(?=[0-9]+/)}', 'data/', $imgpath, 1);
if (!file_exists($imgpath)) {