Headline
CVE-2023-4498: CERT/CC Vulnerability Note VU#304455
Tenda N300 Wireless N VDSL2 Modem Router allows unauthenticated access to pages that in turn should be accessible to authenticated users only
CERT Coordination Center
Authentication Bypass in Tenda N300 Wireless N VDSL2 Modem Router
Vulnerability Note VU#304455
Original Release Date: 2023-09-06 | Last Revised: 2023-09-06
Overview
An authentication bypass vulnerability exists in the N300 Wireless N VDSL2 Modem Router manufactured by Tenda. This vulnerability allows a remote, unauthenticated user to access sensitive information.
Description
CVE-2023-4498 is an authentication bypass vulnerability that enables an unauthenticated attacker who has access to the web console, either locally or remotely, to access resources that would normally be protected. The attacker can construct a web request that includes a white-listed keyword in the path, causing the URL to be served directly (rather than blocked or challenged with an authentication prompt).
Impact
Successful exploitation of this vulnerability could grant the attacker access to pages that would otherwise require authentication. An unauthenticated attacker could thereby gain access to sensitive information, such as the Administrative password, which could be used to launch additional attacks.
Solution
There is no known solution to the vulnerability. Always update your router to the latest available firmware version. Disabling both the remote (WAN-side) administration services and the web interface on the WAN on any SoHo router is also recommended.
Acknowledgements
Thanks to the reporter from the Spike Reply Cybersecurity Team. This document was written by Timur Snoke.
Vendor Information
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CVE IDs:
CVE-2023-4498
API URL:
VINCE JSON | CSAF
Date Public:
2023-09-06
Date First Published:
2023-09-06
Date Last Updated:
2023-09-06 12:05 UTC
Document Revision:
1
Related news
Cisco has released security fixes to address multiple security flaws, including a critical bug, that could be exploited by a threat actor to take control of an affected system or cause a denial-of service (DoS) condition. The most severe of the issues is CVE-2023-20238, which has the maximum CVSS severity rating of 10.0. It’s described as an authentication bypass flaw in the Cisco BroadWorks