#VU49684 Improper access control in NETGEAR products - CVE-2020-27873

Vulnerability identifier: #VU49684

Vulnerability 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-2020-27873

CWE-ID: CWE-284

Exploitation vector: Local network

Exploit availability: No

Vulnerable software:
AC2100
Hardware solutions / Routers for home users
AC2400
Hardware solutions / Routers for home users
AC2600
Hardware solutions / Routers for home users
R6700v2
Hardware solutions / Routers for home users
R6800
Hardware solutions / Routers for home users
R6900v2
Hardware solutions / Routers for home users
R7200
Hardware solutions / Routers for home users
R7350
Hardware solutions / Routers for home users
R7400
Hardware solutions / Routers for home users
R7450
Hardware solutions / Routers for home users
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
R6120
Hardware solutions / Routers & switches, VoIP, GSM, etc
R6020
Hardware solutions / Routers & switches, VoIP, GSM, etc
R6080
Hardware solutions / Routers & switches, VoIP, GSM, etc

Vendor: NETGEAR

Description

The vulnerability allows a remote attacker to gain access to potentially sensitive information.

The vulnerability exists due to improper access restrictions within the SOAP API endpoint. A remote attacker on the local network can gain unauthorized access to sensitive information on the system.

Mitigation
Install updates from vendor's website.

Vulnerable software versions

AC2100: before 1.2.0.76

AC2400: before 1.2.0.76

AC2600: before 1.2.0.76

R6700v2: before 1.2.0.76

R6800: before 1.2.0.76

R6900v2: before 1.2.0.76

R7200: before 1.2.0.76

R7350: before 1.2.0.76

R7400: before 1.2.0.76

R7450: before 1.2.0.76

R6220: before 1.1.0.104

R6230: before 1.1.0.104

R6260: before 1.1.0.78

R6330: before 1.1.0.78

R6350: before 1.1.0.78

R6850: before 1.1.0.78

R6120: before 1.0.0.76

R6020: before 1.0.0.48

R6080: before 1.0.0.48

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External links
https://kb.netgear.com/000062641/Security-Advisory-for-Password-Recovery-Vulnerabilities-on-Some-Rou...
https://www.zerodayinitiative.com/advisories/ZDI-21-072/

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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).

Is there known malware, which exploits this vulnerability?

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