CVE-2023-50199: g416 Missing Auth — Fix

Description

D-Link G416 httpd Missing Authentication for Critical Function Remote Code Execution Vulnerability. This vulnerability allows network-adjacent attackers to bypass authentication on affected installations of D-Link G416 routers. Authentication is not required to exploit this vulnerability. The specific flaw exists within the HTTP service listening on TCP port 80. The issue results from the lack of authentication prior to allowing access to functionality. An attacker can leverage this vulnerability to gain access to critical functions on the device. Was ZDI-CAN-21287.

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CVSS v3.1 Score

8.8

HIGH

CVSS:3.1/AV:A/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H

Weakness Type (CWE)

CWE-306 Missing Authentication

Affected Products

Vendor	Product	Versions
dlink	g416_firmware	< 1.09b01
dlink	g416	All

References

Advisories & Patches

https://supportannouncement.us.dlink.com/announcement/publication.aspx?name=SAP10367 https://supportannouncement.us.dlink.com/announcement/publication.aspx?name=SAP10367

Other References

https://www.zerodayinitiative.com/advisories/ZDI-23-1815/ https://www.zerodayinitiative.com/advisories/ZDI-23-1815/

Frequently Asked Questions

What is CVE-2023-50199? +

D-Link G416 httpd Missing Authentication for Critical Function Remote Code Execution Vulnerability. This vulnerability allows network-adjacent attackers to bypass authentication on affected installations of D-Link G416 routers. Authentication is not required to exploit this vulnerability. The specific flaw exists within the HTTP service listening on TCP port 80. The issue results from the lack of authentication prior to allowing access to functionality. An attacker can leverage this vulnerability to gain access to critical functions on the device. Was ZDI-CAN-21287. It has a CVSS v3.1 base score of 8.8 (HIGH).

How severe is CVE-2023-50199? +

CVE-2023-50199 has a CVSS v3.1 score of 8.8 out of 10, rated HIGH. This is a high-severity vulnerability that should be prioritized for patching.

What products are affected by CVE-2023-50199? +

CVE-2023-50199 affects products from dlink, specifically: g416, g416_firmware. Check the affected products table above for specific version ranges.

How do I check if I'm vulnerable to CVE-2023-50199? +

You can use Secably's free Website Scanner to check your website for known vulnerabilities. For infrastructure scanning, use the Port Scanner to identify exposed services that may be affected. Check the vendor advisories linked above for specific patch and version information.

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