Severity
Medium
Analysis Summary
The vulnerability is due to improper validation of the server firmware upgrade images. An attacker could exploit this vulnerability by installing a server firmware version that would allow the attacker to disable UEFI Secure Boot. A successful exploit could allow the attacker to bypass the signature validation checks that are done by UEFI Secure Boot technology and load a compromised software image on the affected device. A compromised software image is any software image that has not been digitally signed by Cisco.
Impact
Bypass signature restrictions
Affected Vendors
Cisco
Affected Products
- Firepower Management Center
- Threat Grid 5504 Appliance
- Secure Network Server
Remediation
Refer to vendor’s advisory for the list of complete list of affected products and upgraded patches.