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CVE-2021-27257

Published: Mar 5, 2021Updated: Nov 21, 2024 Sources: CVE List NVDCWE-295
6.5MEDIUM
NVD MITRE
EPSS Score
0.3%
Top 77.3%
CISA KEV
Not in KEV
Exploits
No Known Exploits
Remediation
Patch Available
Self-Check
Not available

Description

This vulnerability allows network-adjacent attackers to compromise the integrity of downloaded information on affected installations of NETGEAR R7800 firmware version 1.0.2.76. Authentication is not required to exploit this vulnerability. The specific flaw exists within the downloading of files via FTP. The issue results from the lack of proper validation of the certificate presented by the server. An attacker can leverage this in conjunction with other vulnerabilities to execute arbitrary code in the context of root. Was ZDI-CAN-12362.

No summary for this CVE yet.

CVSS Vector Breakdown

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

CWE-295

Affected Products

NETGEAR
commercial·USaka net gear
R7800
Networking Infrastructure
br200 firmware
Networking Infrastructure
br500 firmware
Networking Infrastructure
d7800 firmware
Networking Infrastructure
ex6100v2 firmware
Networking Infrastructure
ex6150v2 firmware
Networking Infrastructure
ex6250 firmware
Networking Infrastructure
ex6400 firmware
Networking Infrastructure
and 36 more affected products View all →

Exploitability

Official Patch Available

Attack Graph

Products CVE Techniques Tactics

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MITRE ATT&CK

1 technique
Collection
View detailed technique mapping

References

https://kb.netgear.com/000062883/Security-Advisory-for-Multiple-Vulnerabilities-on-Some-Routers-Satellites-and-Extenders
kb.netgear.com
https://www.zerodayinitiative.com/advisories/ZDI-21-264/
zerodayinitiative.com

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