CVE-2021-1485

high
New! CVE Severity Now Using CVSS v3

The calculated severity for CVEs has been updated to use CVSS v3 by default. CVEs that do not have a CVSS v3 score will fall back CVSS v2 for calculating severity. Severity display preferences can be toggled in the settings dropdown.

Description

A vulnerability in the CLI of Cisco IOS XR Software could allow an authenticated, local attacker to inject arbitrary commands that are executed with root privileges on the underlying Linux operating system (OS) of an affected device. This vulnerability is due to insufficient input validation of commands that are supplied by the user. An attacker could exploit this vulnerability by authenticating to a device and submitting crafted input to an affected command. A successful exploit could allow the attacker to execute commands on the underlying Linux OS with root privileges.

References

https://tools.cisco.com/security/center/content/CiscoSecurityAdvisory/cisco-sa-xr-cmdinj-vsKGherc

Details

Source: MITRE

Published: 2021-04-08

Updated: 2021-04-20

Type: CWE-88

Risk Information

CVSS v2

Base Score: 7.2

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

Impact Score: 10

Exploitability Score: 3.9

Severity: HIGH

CVSS v3

Base Score: 7.8

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

Impact Score: 5.9

Exploitability Score: 1.8

Severity: HIGH

Vulnerable Software

Configuration 1

OR

cpe:2.3:o:cisco:ios_xr:*:*:*:*:*:*:x64:*

Tenable Plugins

View all (1 total)

IDNameProductFamilySeverity
148448Cisco IOS XR Software Command Injection (cisco-sa-xr-cmdinj-vsKGherc)NessusCISCO
high