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CVE-2021-34865

Published: Jan 25, 2022Updated: Nov 21, 2024 Sources: CVE List NVDCWE-287
NVD MITRE
8.8CVSSHIGH
EPSS Score
3.1%
Top 14.0%
CISA KEV
Not in KEV
Exploits
No Known Exploits
Remediation
Patch Available

Description

This vulnerability allows network-adjacent attackers to bypass authentication on affected installations of multiple NETGEAR routers. Authentication is not required to exploit this vulnerability. The specific flaw exists within the mini_httpd service, which listens on TCP port 80 by default. The issue results from incorrect string matching logic when accessing protected pages. An attacker can leverage this vulnerability to escalate privileges and execute arbitrary code in the context of root. Was ZDI-CAN-13313.

CVSS Vector Breakdown

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

CWE-287CWE-697

Affected Products

ac2100 firmwarenetgearNetworking Infrastructure
ac2400 firmwarenetgearNetworking Infrastructure
ac2600 firmwarenetgearNetworking Infrastructure
d7000v1 firmwarenetgearNetworking Infrastructure
r6220 firmwarenetgearNetworking Infrastructure
netgearcommercialUSNetworking Infrastructureaka net gear
and 13 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

2 techniques
Initial Access
View detailed technique mapping

References

https://kb.netgear.com/000063955/Security-Advisory-for-Authentication-Bypass-Vulnerability-on-Some-Routers-PSV-2021-0083?article=000063955
kb.netgear.com
https://www.zerodayinitiative.com/advisories/ZDI-21-1051/
zerodayinitiative.com

Timeline

Published
Jan 25, 2022
Last Updated
Nov 21, 2024

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