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 Interface (UEFI) Secure Boot validation checks and load a compromised software image on an…
Does this matter?
Lower severity and a low EPSS score (0.25%). Track it; it rarely justifies an emergency change on its own.
Description
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.
- CVSS 3.1
- 6.6 MEDIUMCVSS:3.1/AV:P/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
- EPSS
- 0.25% probability · 16th percentile
- CISA KEV
- Not listed
- Weakness
- CWE-347
- Affected
- cisco/fmc1000-k9 bios · cisco/fmc1000-k9 firmware · cisco/fmc2500-k9 bios · cisco/fmc2500-k9 firmware · cisco/fmc4500-k9 bios · cisco/fmc4500-k9 firmware · cisco/sns-3515-k9 bios · cisco/sns-3515-k9 firmware · cisco/sns-3595-k9 bios · cisco/sns-3595-k9 firmware · cisco/sns-3615-k9 bios · cisco/sns-3615-k9 firmware · cisco/sns-3655-k9 bios · cisco/sns-3655-k9 firmware · cisco/sns-3695-k9 bios · cisco/sns-3695-k9 firmware · cisco/tg5004-k9 bios · cisco/tg5004-k9 firmware · cisco/tg5004-k9-rf bios · cisco/tg5004-k9-rf firmware · +2 more
- Source
- psirt@cisco.com
References
Source: NVD record, EPSS from FIRST.org, KEV from CISA. Refreshed daily.