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CVE-2020-27867

Published: Feb 11, 2021Updated: Nov 21, 2024 Sources: CVE List NVDCWE-77
NVD MITRE
6.8CVSSMEDIUM
EPSS Score
2.3%
Top 18.6%
CISA KEV
Not in KEV
Exploits
No Known Exploits
Remediation
Patch Available

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.

CVSS Vector Breakdown

AV:AAC:LPR:HUI:NS:UC:HI:HA:H
Exploitability
AV:AAttack Vector
Adjacent
AC:LAttack Complexity
Low
PR:HPrivileges Required
High
UI:NUser Interaction
None
Scope
S:UScope
Unchanged
Impact
C:HConfidentiality
High
I:HIntegrity
High
A:HAvailability
High
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Weaknesses

CWE-77

Affected Products

ac2100 firmwarenetgearNetworking Infrastructure
ac2400 firmwarenetgearNetworking Infrastructure
ac2600 firmwarenetgearNetworking Infrastructure
r6700 firmwarenetgearNetworking Infrastructure
r6800 firmwarenetgearNetworking Infrastructure
netgearcommercialUSNetworking Infrastructureaka net gear
and 15 more affected products View all →

Attack Graph

Products CVE Techniques Tactics

Click technique nodes to view MITRE ATT&CK details. Scroll to zoom, drag to pan.

Exploitability

Official Patch Available

MITRE ATT&CK

1 technique
Execution
View detailed technique mapping

References

https://kb.netgear.com/000062641/Security-Advisory-for-Password-Recovery-Vulnerabilities-on-Some-Routers
kb.netgear.com
https://www.zerodayinitiative.com/advisories/ZDI-20-1423/
zerodayinitiative.com

Timeline

Published
Feb 11, 2021
Last Updated
Nov 21, 2024

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