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

Vulnerability identifier: #VU51709

CSH Severity: Low

CVSS v4: 7 [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]

CVE-ID: CVE-2021-1452

CWE-ID: CWE-78

Exploitation vector: Local access

Exploit availability: No public exploit available

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.

Cisco Embedded Services 3300 Series Switches
Allen-Bradley Stratix 5400 Industrial Ethernet Switches
Allen-Bradley Stratix 5410 Industrial Distribution Switches
Allen-Bradley Stratix 5700 Industrial Managed Ethernet Switches
Allen-Bradley Stratix 8000 Modular Managed Ethernet Switches
Stratix 5800
Cisco IOS XE

Install updates from vendor's website.

Stratix 5800 - update to 17.04.01

• https://tools.cisco.com/security/center/content/CiscoSecurityAdvisory/cisco-sa-iosxe-romvar-cmd-inj-N56fYbrw
• https://bst.cloudapps.cisco.com/bugsearch/bug/CSCvu65039

• Privilege escalation in Cisco IOS XE ROM Monitor
• Multiple vulnerabilities in Rockwell Automation Stratix Switches