CVE-2019-1736 – Multiple Cisco UCS-Based Products UEFI Secure Boot Bypass Vulnerability

https://notcve.org/view.php?id=CVE-2019-1736

23 Sep 2020 — A vulnerability in the firmware of the Cisco UCS C-Series Rack Servers could allow an authenticated, physical attacker to bypass Unified Extensible Firmware Interface (UEFI) Secure Boot validation checks and load a compromised software image on an affected device. 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 exp... • https://tools.cisco.com/security/center/content/CiscoSecurityAdvisory/cisco-sa-20200219-ucs-boot-bypass • CWE-347: Improper Verification of Cryptographic Signature •