Denial of service in NETGEAR Routers

1) Input validation error

EUVDB-ID: #VU62044

Risk: Low

CVSSv4.0: 4.9 [CVSS:4.0/AV:A/AC:L/AT:N/PR:N/UI:N/VC:N/VI:N/VA:H/SC:N/SI:N/SA:N/E:U/U:Clear]

CVE-ID: N/A

CWE-ID: CWE-20 - Improper input validation

Exploit availability: No

Description

The vulnerability allows a remote attacker to perform a denial of service (DoS) attack.

The vulnerability exists due to insufficient validation of user-supplied input. A remote attacker on the local network can pass specially crafted input to the application and perform a denial of service (DoS) attack.

Mitigation

Install updates from vendor's website.

Vulnerable software versions

R6400v2: All versions

R6700v3: All versions

CPE2.3

• cpe:2.3:h:netgear:r6400v2:*:*:*:*:*:*:*:*
• cpe:2.3:h:netgear:r6700v3:*:*:*:*:*:*:*:*

External links

https://kb.netgear.com/000064807/Security-Advisory-for-Denial-of-Service-on-Some-Routers-PSV-2021-0022

Q & A

Can this vulnerability be exploited remotely?

Yes. This vulnerability can be exploited by a remote non-authenticated attacker via the local network (LAN).

How the attacker can exploit this vulnerability?

The attacker would have to send a specially crafted request to the affected device in order to exploit this vulnerability.

Is there known malware, which exploits this vulnerability?

No. We are not aware of malware exploiting this vulnerability.