Description
LibreNMS through 26.9.1.1 contains an authorization bypass vulnerability in includes/html/graphs/smokeping/auth.inc.php that checks the src probe device instead of the rendered target device. Restricted users permitted on a probe device can request smokeping_in or smokeping_out graphs with arbitrary device ids to view latency data and enumerate device names.
Affected products
| Vendor | Product | Affected | Fixed |
|---|---|---|---|
| librenms | librenms | ≤ 26.9.1.1 | — |
References
- https://hackmd.io/@haind/librenms-smokeping-graph-src-device-auth-confusion third-party-advisory
- https://github.com/librenms/librenms/blob/26.9.1.1/includes/html/graphs/smokeping/auth.inc.php#L3-L7 technical-description
- https://github.com/librenms/librenms/blob/26.9.1.1/LibreNMS/Util/Graph.php#L190-L198 technical-description
- https://github.com/librenms/librenms product
- VulnCheck Advisory: LibreNMS through 26.9.1.1 Authorization Bypass via Smokeping Graph auth.inc.php third-party-advisory