#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
Vulnerability risk: Low
CVSSv4.0: 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
Vulnerable software:
Cisco Embedded Services 3300 Series Switches
Cisco IOS XE
Cisco Embedded Services 3300 Series Switches
Cisco IOS XE
Software vendor:
Cisco Systems, Inc
Cisco Systems, Inc
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.
Remediation
Install updates from vendor's website.