Protection Mechanism Failure in Cisco Adaptive Security Appliance Software and Firepower Threat Defense Software

1) Protection Mechanism Failure

EUVDB-ID: #VU47946

Risk: Low

CVSSv3.1: 5.8 [CVSS:3.1/AV:L/AC:L/PR:H/UI:N/S:U/C:H/I:H/A:H/E:U/RL:O/RC:C]

CVE-ID: CVE-2020-3458

CWE-ID: CWE-693 - Protection Mechanism Failure

Exploit availability: No

Description

The vulnerability allows a local user to bypass implemented security restrictions.

The vulnerability exists due to insufficient protections of the secure boot process. A local administrator can inject code into specific files that are then referenced during the device boot process, break the chain of trust and inject code into the boot process of the device, which would be executed at each boot and maintain persistence across reboots.

Mitigation

Install updates from vendor's website.

Vulnerable software versions

Cisco Adaptive Security Appliance (ASA): 9.8 - 9.14

Cisco Firepower Threat Defense (FTD): 6.2.2 - 6.6.0

Firepower 1000 Series Appliances: All versions

Firepower 2100 Series Security Appliance: All versions

External links

http://tools.cisco.com/security/center/content/CiscoSecurityAdvisory/cisco-sa-fxos-sbbyp-KqP6NgrE

Q & A

Can this vulnerability be exploited remotely?

No. This vulnerability can be exploited locally. The attacker should have authentication credentials and successfully authenticate on the system.

Is there known malware, which exploits this vulnerability?

No. We are not aware of malware exploiting this vulnerability.