CVE-2021-27255

Description

This vulnerability allows remote attackers to execute arbitrary code 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 refresh_status.aspx endpoint. The issue results from a lack of authentication required to start a service on the server. An attacker can leverage this vulnerability to execute code in the context of root. Was ZDI-CAN-12360.

Related CPE's

onetgearbr200_firmware********

hnetgearbr200-*******

onetgearbr500_firmware********

hnetgearbr500-*******

onetgeard7800_firmware********

hnetgeard7800-*******

onetgearex6100v2_firmware********

hnetgearex6100v2-*******

onetgearex6150v2_firmware********

hnetgearex6150v2-*******

References

N/A

Third Party AdvisoryVDB Entry

N/A

PatchVendor Advisory

CvssV3 impact

BaseSeverity

HIGH

ConfidentialityImpact

HIGH

AttackComplexity

LOW

Scope

UNCHANGED

AttackVector

ADJACENT_NETWORK

AvailabilityImpact

HIGH

IntegrityImpact

HIGH

PrivilegesRequired

NONE

BaseScore

8.8

VectorString

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

Version

3.1

UserInteraction

NONE

CvssV2 impact

AccessComplexity

LOW

ConfidentialityImpact

COMPLETE

AvailabilityImpact

COMPLETE

IntegrityImpact

COMPLETE

BaseScore

8.300000190734863

VectorString

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

Version

2.0

AccessVector

ADJACENT_NETWORK

Authentication

NONE

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