OS Command Injection in Cisco Embedded Services 3300 Series Switches and Cisco IOS XE - CVE-2021-1452

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Main Vulnerability Database Vulnerabilities #VU51709

OS Command Injection in Cisco Embedded Services 3300 Series Switches and Cisco IOS XE - CVE-2021-1452

Published: March 24, 2021


Vulnerability identifier: #VU51709
CSH Severity: Low
CVSS v4.0: CVSS:4.0/AV:P/AC:L/AT:N/PR:N/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N/E:U/U:Clear
CVE-ID: CVE-2021-1452
CWE-ID: CWE-78
Exploitation vector: Local access
Exploit availability: No public exploit available
Vendor: Cisco Systems, Inc
Affected software:
Cisco Embedded Services 3300 Series Switches
Cisco IOS XE

Detailed vulnerability description

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

The vulnerability exists in ROM Monitor (ROMMON) due to incorrect validations of specific function arguments passed to a boot script when specific ROMMON variables are set.An attacker with physical access to the system can execute unsigned code at system boot time.


How to mitigate CVE-2021-1452

Install updates from vendor's website.

Sources