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Ensured that the returnto GET parameter leads you only to another place on your Pepperminty Wiki instance (thanks, @JamieSlome)

This commit is contained in:
Starbeamrainbowlabs 2021-09-21 13:40:12 +01:00
parent 4be6a181cb
commit f59e68127c
Signed by: sbrl
GPG key ID: 1BE5172E637709C2
2 changed files with 9 additions and 0 deletions

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@ -6,6 +6,7 @@ This file holds the changelog for Pepperminty Wiki. This is the master list of t
### Fixed
- [security] Fixed an XSS vulnerability in the `format` GET parameter of the `stats` action (thanks, @JamieSlome)
- [security] Ensured that the `returnto` GET parameter leads you only to another place on your Pepperminty Wiki instance (thanks, @JamieSlome)
## v0.23

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@ -152,6 +152,14 @@ register_module([
$_SESSION["$settings->sessionprefix-pass"] = $new_password_hash ?? hash_password($pass);
$_SESSION["$settings->sessionprefix-expiretime"] = time() + 60*60*24*30; // 30 days from now
$returnto_redirect = $_GET["returnto"];
if(strpos($returnto_redirect, "?") === false) {
http_response_code(400);
exit(page_renderer::render_main("Login error - $settings->sitename", "<p>Your credentials were correct, but the 'returnto' URL specified (in the <code>returnto</code> GET parameter) did not contain a question mark. To protect you from being redirected to another site, $settings->sitename only allows redirects that do not leave $settings->sitename.</p>"));
}
// Ensure that this redirect takes to only somewhere else in this site
$returnto_redirect = substr($returnto_redirect, strpos($returnto_redirect, "?"));
// Redirect to wherever the user was going
http_response_code(302);
header("x-login-success: yes");