Improper Authentication in multiple NETGEAR Routers



Risk Low
Patch available YES
Number of vulnerabilities 1
CVE-ID CVE-2020-17409
CWE-ID CWE-287
Exploitation vector Local network
Public exploit N/A
Vulnerable software
 R6020
Hardware solutions / Routers & switches, VoIP, GSM, etc

R6080
Hardware solutions / Routers & switches, VoIP, GSM, etc

R6120
Hardware solutions / Routers & switches, VoIP, GSM, etc

R6220
Hardware solutions / Routers & switches, VoIP, GSM, etc

R6230
Hardware solutions / Routers & switches, VoIP, GSM, etc

R6260
Hardware solutions / Routers & switches, VoIP, GSM, etc

R6330
Hardware solutions / Routers & switches, VoIP, GSM, etc

R6350
Hardware solutions / Routers & switches, VoIP, GSM, etc

R6850
Hardware solutions / Routers & switches, VoIP, GSM, etc

WNR2020
Hardware solutions / Routers & switches, VoIP, GSM, etc

JNR3210
Hardware solutions / Routers & switches, VoIP, GSM, etc

Vendor NETGEAR

Security Bulletin

This security bulletin contains one low risk vulnerability.

1) Improper Authentication

EUVDB-ID: #VU46760

Risk: Low

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

CVE-ID: CVE-2020-17409

CWE-ID: CWE-287 - Improper Authentication

Exploit availability: No

Description

The vulnerability allows a remote attacker to bypass authentication process.

The vulnerability exists due to an error in when processing authentication requests within the "mini_httpd" service. A remote attacker on the local network can bypass authentication process and disclose stored credentials.

Mitigation

Install updates from vendor's website.

Vulnerable software versions

R6020: All versions

R6080: All versions

R6120: All versions

R6220: All versions

R6230: All versions

R6260: All versions

R6330: All versions

R6350: All versions

R6850: All versions

WNR2020: All versions

JNR3210: All versions

CPE2.3 External links

https://www.zerodayinitiative.com/advisories/ZDI-20-1176/
https://kb.netgear.com/000062304/Security-Advisory-for-Authentication-Bypass-on-Some-Routers-PSV-2020-0258


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.



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