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GHSA-24m3-w8g9-jwpq
No affected components available
Background
The module controller in SimpleSAML\Module that processes requests for pages
hosted by modules, has code to identify paths ending with .php and process
those as PHP code. If no other suitable way of handling the given path exists it
presents the file to the browser.
Description
The check to identify paths ending with .php does not account for uppercase
letters. If someone requests a path ending with e.g. .PHP and the server is
serving the code from a case-insensitive file system, such as on Windows, the
processing of the PHP code does not occur, and the source code is instead
presented to the browser.
Affected versions
SimpleSAMLphp versions 1.18.5 and older.
Impact
An attacker may use this issue to gain access to the source code in third-party modules that is meant to be private, or even sensitive. However, the attack surface is considered small, as the attack will only work when SimpleSAMLphp serves such content from a file system that is not case-sensitive, such as on Windows.
Resolution
Upgrade the SimpleSAMLphp installation to version 1.18.6.
Credit
This vulnerability was discovered and reported by Sławek Naczyński.
The vulnerability can be exploited over the network without needing physical access. It is difficult for an attacker to exploit this vulnerability and may require special conditions. An attacker needs basic access or low-level privileges. The attacker needs the user to perform some action, like clicking a link. The vulnerability can affect other systems as well, not just the initial system. There is a low impact on the confidentiality of the information.
Limited exploitation activity has been observed. Close monitoring and planned remediation are recommended.
The exploit probability is very low. The vulnerability is unlikely to be exploited in the next 30 days.
We did not find any exploit available. Neither in GitHub repositories nor in the Exploit-Database.
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