SB2021033014 - OS Command Injection in Cisco IOS XE Software

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Main Vulnerability Database SB2021033014

SB2021033014 - OS Command Injection in Cisco IOS XE Software

Published: March 30, 2021

Security Bulletin ID SB2021033014
CSH Severity
Low
Patch available
YES
Number of vulnerabilities 1
Exploitation vector Local access
Highest impact Code execution

Breakdown by Severity

Low 100%
  • Low
  • Medium
  • High
  • Critical

Description

This security bulletin contains information about 1 vulnerability.


1) OS Command Injection (CVE-ID: CVE-2021-1441)

CWE-ID: CWE-78 - Improper Neutralization of Special Elements used in an OS Command ('OS Command Injection')

CVSSv4: CVSS:4.0/AV:L/AC:L/AT:N/PR:H/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N/E:U/U:Clear


The vulnerability allows a local user to execute arbitrary shell commands on the target system.

The vulnerability exists due to incorrect validations of parameters passed to a diagnostic script that is executed when the device boots up. A local administrator can tamper with an executable file stored on a device and execute arbitrary OS commands on the target system.

Successful exploitation of this vulnerability may result in complete compromise of vulnerable system.


Remediation

Install update from vendor's website.

References