CVE-2023-48294 Broken Access control on Graphs Feature in LibreNMS
Low-privilege users can enumerate and view all devices registered by admins due to broken access control in the graph feature.
- Exploited in the wild
- Not known
- Login needed
- Any signed-in user
- Attackable
- Over the internet
- Victim action needed
- Not needed
- Fix
- Available
What is CVE-2023-48294?
CVE-2023-48294 is a medium-severity missing authorization vulnerability in Librenms Librenms, published on 17 Nov 2023. Any signed-in user can exploit it over the network, with no action from the victim.
Official description
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.
Weakness: CWE-200
Which versions are affected by CVE-2023-48294?
2 open source packages ship an affected version, including librenms/librenms. It affects 1 product.
| Package | Affected | Fixed in |
|---|---|---|
librenms/librenms Packagist | All versions | 23.11.0 |
librenms/librenms Packagist | All versions | 23.11.0 |
Products include Librenms Librenms.
How do I fix CVE-2023-48294?
Upgrade librenms/librenms to 23.11.0 or later.
Upgrade, and check permissions on every request on the server, not only in the interface. More about Missing authorization.
Is CVE-2023-48294 being exploited?
There is no known exploitation of CVE-2023-48294 in the wild and no public exploit code.
Other vulnerabilities in Librenms Librenms
Sources
Also known as GHSA-fpq5-4vwm-78x4.