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[email protected]NVD:CVE-2020-27867

HistoryFeb 12, 2021 - 12:15 a.m.

CVE-2020-27867

2021-02-1200:15:12

CWE-77

[email protected]

web.nvd.nist.gov

7.7 High

CVSS2

Attack Vector

ADJACENT_NETWORK

Attack Complexity

LOW

Authentication

SINGLE

Confidentiality Impact

COMPLETE

Integrity Impact

COMPLETE

Availability Impact

COMPLETE

AV:A/AC:L/Au:S/C:C/I:C/A:C

6.8 Medium

CVSS3

Attack Vector

ADJACENT

Attack Complexity

LOW

Privileges Required

HIGH

User Interaction

NONE

Scope

UNCHANGED

Confidentiality Impact

HIGH

Integrity Impact

HIGH

Availability Impact

HIGH

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

0.0005 Low

EPSS

Percentile

17.9%

JSON

This vulnerability allows network-adjacent attackers to execute arbitrary code on affected installations of NETGEAR R6020, R6080, R6120, R6220, R6260, R6700v2, R6800, R6900v2, R7450, JNR3210, WNR2020, Nighthawk AC2100, and Nighthawk AC2400 routers. Although authentication is required to exploit this vulnerability, the existing authentication mechanism can be bypassed. The specific flaw exists within the mini_httpd service, which listens on TCP port 80 by default. When parsing the funjsq_access_token parameter, the process does not properly validate a user-supplied string before using it to execute a system call. An attacker can leverage this vulnerability to execute code in the context of root. Was ZDI-CAN-11653.

Affected configurations

NVD

Node

netgearac2100_firmwareRange<1.2.0.76

AND

netgearac2100Match-

Node

netgearac2400_firmwareRange<1.2.0.76

AND

netgearac2400Match-

Node

netgearac2600_firmwareRange<1.2.0.76

AND

netgearac2600Match-

Node

netgearr6700_firmwareRange<1.2.0.76

AND

netgearr6700Matchv2

Node

netgearr6800_firmwareRange<1.2.0.76

AND

netgearr6800Match-

Node

netgearr6900_firmwareRange<1.2.0.76

AND

netgearr6900Matchv2

Node

netgearr7200_firmwareRange<1.2.0.76

AND

netgearr7200Match-

Node

netgearr7350_firmwareRange<1.2.0.76

AND

netgearr7350Match-

Node

netgearr7400_firmwareRange<1.2.0.76

AND

netgearr7400Match-

Node

netgearr7450_firmwareRange<1.2.0.76

AND

netgearr7450Match-

Node

netgearr6220_firmwareRange<1.1.0.104

AND

netgearr6220Match-

Node

netgearr6230_firmwareRange<1.1.0.104

AND

netgearr6230Match-

Node

netgearr6260_firmwareRange<1.1.0.78

AND

netgearr6260Match-

Node

netgearr6330_firmwareRange<1.1.0.78

AND

netgearr6330Match-

Node

netgearr6350_firmwareRange<1.1.0.78

AND

netgearr6350Match-

Node

netgearr6850_firmwareRange<1.1.0.78

AND

netgearr6850Match-

Node

netgearr6120_firmwareRange<1.0.0.76

AND

netgearr6120Match-

Node

netgearr6020_firmwareRange<1.0.0.48

AND

netgearr6020Match-

Node

netgearr6080_firmwareRange<1.0.0.48

AND

netgearr6080Match-

References

kb.netgear.com/000062641/Security-Advisory-for-Password-Recovery-Vulnerabilities-on-Some-Routers

www.zerodayinitiative.com/advisories/ZDI-20-1423/

7.7 High

CVSS2

Attack Vector

ADJACENT_NETWORK

Attack Complexity

LOW

Authentication

SINGLE

Confidentiality Impact

COMPLETE

Integrity Impact

COMPLETE

Availability Impact

COMPLETE

AV:A/AC:L/Au:S/C:C/I:C/A:C

6.8 Medium

CVSS3

Attack Vector

ADJACENT

Attack Complexity

LOW

Privileges Required

HIGH

User Interaction

NONE

Scope

UNCHANGED

Confidentiality Impact

HIGH

Integrity Impact

HIGH

Availability Impact

HIGH

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

0.0005 Low

EPSS

Percentile

17.9%

JSON

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