CVE-2019-1736
A vulnerability in the firmware of the Cisco UCS C-Series Rack Servers could allow an authenticated, physical attacker to bypass Unified Extensible Firmware In…
Impact
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 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.
Affected products
| Vendor | Product | Affected versions |
|---|---|---|
| Cisco | Fmc1000-K9 Bios | before 4.0.1f.0 |
| Cisco | Fmc1000-K9 Firmware | before 4.0.2h |
| Cisco | Fmc2500-K9 Bios | before 4.0.1f.0 |
| Cisco | Fmc2500-K9 Firmware | before 4.0.2h |
| Cisco | Fmc4500-K9 Bios | before 4.0.1f.0 |
| Cisco | Fmc4500-K9 Firmware | before 4.0.2h |
| Cisco | Sns-3515-K9 Bios | before 4.0.2d |
| Cisco | Sns-3515-K9 Firmware | before 4.0.2h |
| Cisco | Sns-3595-K9 Bios | before 4.0.2d |
| Cisco | Sns-3595-K9 Firmware | before 4.0.2h |
| Cisco | Sns-3615-K9 Bios | before 4.0.1i |
| Cisco | Sns-3615-K9 Firmware | before 4.0.1g |