CVE-2021-40120

A vulnerability in the web-based management interface of certain Cisco Small Business RV Series Routers could allow an authenticated, remote attacker with administrative privileges to inject arbitrary commands into the underlying operating system and execute them using root-level privileges. This vulnerability is due to insufficient validation of user-supplied input. An attacker could exploit this vulnerability by sending malicious input to a specific field in the web-based management interface of an affected device. A successful exploit could allow the attacker to execute arbitrary commands on the underlying Linux operating system as a user with root-level privileges.

CVSS v3.0 7.2 HIGH
CVSS v2.0 9.0 HIGH

7.2^/10

CVSS v3.0 : HIGH

Vector :

Exploitability : 1.2 / Impact : 5.9

Attack Vector NETWORK

Attack Complexity LOW

Privileges Required HIGH

User Interaction NONE

Confidentiality Impact HIGH

Integrity Impact HIGH

Availability Impact HIGH

Scope UNCHANGED

9.0^/10

CVSS v2.0 : HIGH

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

Exploitability : 8.0 / Impact : 10.0

Access Vector NETWORK

Access Complexity LOW

Authentication SINGLE

Confidentiality Impact COMPLETE

Integrity Impact COMPLETE

Availability Impact COMPLETE

References

Link	Resource
https://tools.cisco.com/security/center/content/CiscoSecurityAdvisory/cisco-sa-sbrv-cmdinjection-Z5cWFdK	Vendor Advisory

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Configurations

Configuration 1 (hide)

AND

cpe:2.3:o:cisco:ios_xr:4.2.3.06:*:*:*:*:*:*:*

OR	cpe:2.3:h:cisco:rv320:-:::::::*
	cpe:2.3:h:cisco:rv042:-:::::::*
	cpe:2.3:h:cisco:rv082:-:::::::*
	cpe:2.3:h:cisco:rv042g:-:::::::*
	cpe:2.3:h:cisco:rv325:-:::::::*
	cpe:2.3:h:cisco:rv016:-:::::::*

Configuration 2 (hide)

cpe:2.3:a:cisco:application_extension_platform:1.5.1.13:*:*:*:*:*:*:*

Information

Published : 2021-11-04 09:15

Updated : 2022-08-05 04:45

NVD link : CVE-2021-40120

Mitre link : CVE-2021-40120

JSON object : View

CWE

CWE-78

Improper Neutralization of Special Elements used in an OS Command ('OS Command Injection')

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Products Affected

cisco

ios_xr
rv042
rv325
rv320
rv016
rv042g
rv082
application_extension_platform

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