Описание
LibreNMS vulnerable to rate limiting bypass on login page
Summary
Application is using two login methods and one of them is using GET request for authentication. There is no rate limiting security feature at GET request or backend is not validating that.
PoC
Go to /?username=admin&password=password&submit=
Capture request in Burpsuite intruder and add payload marker at password parameter value.
Start the attack after adding your password list
We have added 74 passwords
Check screenshot for more info
Impact
An attacker can Bruteforce user accounts and using GET request for authentication is not recommended because certain web servers logs all requests in old logs which can also store victim user credentials.
Ссылки
- https://github.com/librenms/librenms/security/advisories/GHSA-rq42-58qf-v3qx
- https://nvd.nist.gov/vuln/detail/CVE-2023-46745
- https://github.com/librenms/librenms/pull/15558
- https://github.com/librenms/librenms/commit/7c006e96251ae1d32e1a015b361a7bfbb815c028
- https://github.com/librenms/librenms/releases/tag/23.11.0
Пакеты
librenms/librenms
< 23.11.0
23.11.0
Связанные уязвимости
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 the login method has no rate limit. An attacker may be able to leverage this vulnerability to gain access to user accounts. This issue has been addressed in version 23.11.0. Users are advised to upgrade. There are no known workarounds for this vulnerability.