#VU32720 Improper access control in LibreNMS - CVE-2020-15877
Published: July 28, 2020
Vulnerability identifier: #VU32720
Vulnerability risk: Medium
CVSSv4.0: CVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:N/VC:H/VI:H/VA:N/SC:N/SI:N/SA:N/E:U/U:Green
CVE-ID: CVE-2020-15877
CWE-ID: CWE-284
Exploitation vector: Remote access
Exploit availability:
No public exploit available
Vulnerable software:
LibreNMS
LibreNMS
Software vendor:
LibreNMS Project
LibreNMS Project
Description
The vulnerability allows a remote attacker to gain unauthorized access to otherwise restricted functionality.
The vulnerability exists due to improper access restrictions for normal users because of "'guard' => 'admin'" instead of "'middleware' => ['can:admin']" in routes/web.php. A remote authenticated attacker can bypass implemented security restrictions and gain unauthorized access to the application.
Remediation
Install updates from vendor's website.
External links
- https://community.librenms.org/c/announcements
- https://github.com/librenms/librenms/commit/e5bb6d80bc308fc56b9a01ffb76c34159995353c
- https://github.com/librenms/librenms/compare/1.65...1.65.1
- https://github.com/librenms/librenms/pull/11915
- https://github.com/librenms/librenms/releases/tag/1.65.1
- https://shielder.it/blog