CVE-2020-27867

Published Feb 12, 2021

Last updated 4 years ago

CVSS medium 6.8

Overview

Description: 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.
Source: zdi-disclosures@trendmicro.com
NVD status: Analyzed

Risk scores

CVSS 3.1

Type: Primary
Base score: 6.8
Impact score: 5.9
Exploitability score: 0.9
Vector string: CVSS:3.1/AV:A/AC:L/PR:H/UI:N/S:U/C:H/I:H/A:H
Severity: MEDIUM

CVSS 3.0

Type: Secondary
Base score: 6.8
Impact score: 5.9
Exploitability score: 0.9
Vector string: CVSS:3.0/AV:A/AC:L/PR:H/UI:N/S:U/C:H/I:H/A:H
Severity: MEDIUM

CVSS 2.0

Type: Primary
Base score: 7.7
Impact score: 10
Exploitability score: 5.1
Vector string: AV:A/AC:L/Au:S/C:C/I:C/A:C

Weaknesses

zdi-disclosures@trendmicro.com: CWE-77
nvd@nist.gov: CWE-77

Hype score: Not currently trending

Configurations

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Overview

Risk scores

CVSS 3.1

CVSS 3.0

CVSS 2.0

Weaknesses

Social media

Configurations

References