LibreNMS up to 23.10.x graph.php information disclosure

Summaryinfo

A vulnerability, which was classified as problematic, has been found in LibreNMS up to 23.10.x. The affected element is an unknown function of the file graph.php. Performing a manipulation results in information disclosure. This vulnerability is reported as CVE-2023-48294. The attack is possible to be carried out remotely. No exploit exists. It is advisable to upgrade the affected component.

Detailsinfo

A vulnerability, which was classified as problematic, was found in LibreNMS up to 23.10.x. This affects an unknown functionality of the file graph.php. The manipulation with an unknown input leads to a information disclosure vulnerability. CWE is classifying the issue as CWE-200. The product exposes sensitive information to an actor that is not explicitly authorized to have access to that information. This is going to have an impact on confidentiality. The summary by CVE is:

LibreNMS is an auto-discovering PHP/MySQL/SNMP based network monitoring which includes support for a wide range of network hardware and operating systems. In affected versions of LibreNMS when a user accesses their device dashboard, one request is sent to `graph.php` to access graphs generated on the particular Device. This request can be accessed by a low privilege user and they can enumerate devices on librenms with their id or hostname. Leveraging this vulnerability a low privilege user can see all devices registered by admin users. This vulnerability has been addressed in commit `489978a923` which has been included in release version 23.11.0. Users are advised to upgrade. There are no known workarounds for this vulnerability.

The weakness was disclosed 11/18/2023 as GHSA-fpq5-4vwm-78x4. The advisory is shared at github.com. This vulnerability is uniquely identified as CVE-2023-48294 since 11/14/2023. Technical details are known, but no exploit is available. MITRE ATT&CK project uses the attack technique T1592 for this issue.

By approaching the search of inurl:graph.php it is possible to find vulnerable targets with Google Hacking.

Upgrading to version 23.11.0 eliminates this vulnerability. Applying the patch 489978a923ed52aa243d3419889ca298a8a6a7cf is able to eliminate this problem. The bugfix is ready for download at github.com. The best possible mitigation is suggested to be upgrading to the latest version.

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Productinfo

Name

• LibreNMS

Version

• 23.0
• 23.1
• 23.2
• 23.3
• 23.4
• 23.5
• 23.6
• 23.7
• 23.8
• 23.9
• 23.10

License

• open-source

Website

• Product: https://github.com/librenms/librenms/

CPE 2.3info

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CPE 2.2info

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