GHSA-2r3v-q9x3-7g46

GHSA-2r3v-q9x3-7g46 · Link injection in SimpleSAMLphp

This page contains facts from public vulnerability sources. Check the original advisory before updating.

### Background Several scripts part of SimpleSAMLphp display a web page with links obtained from the request parameters. This allows us to enhance usability, as the users are presented with links they can follow after completing a certain action, like logging out. ### Description The following scripts were not checking the URLs obtained via the HTTP request before displaying them as the target of links that the user may click on: - `www/logout.php` - `modules/core/www/no_cookie.php` The issue allowed attackers to display links targeting a malicious website inside a trusted site running SimpleSAMLphp, due to the lack of security checks involving the `link_href` and `retryURL` HTTP parameters, respectively. The issue was resolved by including a verification of the URLs received in the request against a white list of websites specified in the `trusted.url.domains` configuration option. ### Affected versions All SimpleSAMLphp versions prior to 1.14.4. ### Impact A remote attacker could craft a link pointing to a trusted website running SimpleSAMLphp, including a parameter pointing to a malicious website, and try to fool the victim into visiting that website by clicking on a link in the page presented by SimpleSAMLphp. ### Resolution Upgrade to the latest version. ### Credit This security issue was discovered and reported by John Page (hyp3rlinx).

CVSS 3.7 · Low · Fix available

Published

2020-01-24T21:27:16Z

Updated

2024-12-01T05:38:18.893389Z

Stack: php

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