CVE Vulnerabilities

CVE-2023-20025

Using Referer Field for Authentication

Published: Jan 20, 2023 | Modified: Mar 12, 2025
CVSS 3.x
9.8
CRITICAL
Source:
NVD
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
CVSS 2.x
RedHat/V2
RedHat/V3
Ubuntu

A vulnerability in the web-based management interface of Cisco Small Business RV016, RV042, RV042G, and RV082 Routers could allow an unauthenticated, remote attacker to bypass authentication on an affected device. This vulnerability is due to improper validation of user input within incoming HTTP packets. An attacker could exploit this vulnerability by sending a crafted HTTP request to the web-based management interface. A successful exploit could allow the attacker to bypass authentication and gain root access on the underlying operating system.

Weakness

The referer field in HTTP requests can be easily modified and, as such, is not a valid means of message integrity checking.

Affected Software

Name Vendor Start Version End Version
Rv016_firmware Cisco - (including) - (including)

Potential Mitigations

References