Multiple vulnerabilities in NETGEAR Routers



Risk Medium
Patch available YES
Number of vulnerabilities 4
CVE-ID CVE-2020-27872
CVE-2020-27873
CWE-ID CWE-287
CWE-284
Exploitation vector Local network
Public exploit N/A
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

Security Bulletin

This security bulletin contains information about 4 vulnerabilities.

1) Improper Authentication

EUVDB-ID: #VU49683

Risk: Medium

CVSSv4.0: 6.3 [CVSS:4.0/AV:A/AC:L/AT:N/PR:N/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N/E:U/U:Green]

CVE-ID: CVE-2020-27872

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 improper state tracking in the password recovery process within the "mini_httpd" service. A remote attacker on the local network can bypass authentication process and gain unauthorized access to the application.

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

CPE2.3 External links

https://www.zerodayinitiative.com/advisories/ZDI-21-071/
https://kb.netgear.com/000062641/Security-Advisory-for-Password-Recovery-Vulnerabilities-on-Some-Routers


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.

2) Improper Authentication

EUVDB-ID: #VU49686

Risk: Low

CVSSv4.0: 5.9 [CVSS:4.0/AV:A/AC:L/AT:N/PR:H/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N/E:U/U:Clear]

CVE-ID: N/A

CWE-ID: CWE-287 - Improper Authentication

Exploit availability: No

Description

The vulnerability allows a remote user to bypass authentication process.

The vulnerability exists due to an error in when processing authentication requests. A remote administrator on the local network can bypass authentication process and gain unauthorized access to the application.

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

CPE2.3 External links

https://kb.netgear.com/000062641/Security-Advisory-for-Password-Recovery-Vulnerabilities-on-Some-Rou...


Q & A

Can this vulnerability be exploited remotely?

Yes. This vulnerability can be exploited by a remote authenticated privileged user 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.

3) Improper Authentication

EUVDB-ID: #VU49685

Risk: Low

CVSSv4.0: 5.9 [CVSS:4.0/AV:A/AC:L/AT:N/PR:H/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N/E:U/U:Clear]

CVE-ID: N/A

CWE-ID: CWE-287 - Improper Authentication

Exploit availability: No

Description

The vulnerability allows a remote user to bypass authentication process.

The vulnerability exists due to an error in when processing authentication requests. A remote administrator on the local network can bypass authentication process and gain unauthorized access to the application.

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

CPE2.3 External links

https://kb.netgear.com/000062641/Security-Advisory-for-Password-Recovery-Vulnerabilities-on-Some-Rou...


Q & A

Can this vulnerability be exploited remotely?

Yes. This vulnerability can be exploited by a remote authenticated privileged user 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.

4) Improper access control

EUVDB-ID: #VU49684

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 - Improper Access Control

Exploit availability: No

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

CPE2.3 External links

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


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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