Cisco Unified Computing System BIOS Signature Bypass Vulnerability (Cisco Cisco Unified Computing System (Managed))
At a glance
- Source
- NVD
- EPSS
- EPSS 0.21 % · percentile 11 ()
- State
- PUBLISHED
- Published
- Updated
- Assigner
- cisco
- NVD status
- Modified
Description
A vulnerability in the BIOS upgrade utility of Cisco Unified Computing System (UCS) C-Series Rack Servers could allow an authenticated, local attacker to install compromised BIOS firmware on an affected device. The vulnerability is due to insufficient validation of the firmware image file. An attacker could exploit this vulnerability by executing the BIOS upgrade utility with a specific set of options. A successful exploit could allow the attacker to bypass the firmware signature-verification process and install compromised BIOS firmware on an affected device.
Weaknesses (CWE)
- CWE-345 — Insufficient Verification of Data Authenticity
References
Scores
| Version | Score | Vector | Scored by |
|---|---|---|---|
| CVSS 3.0 | MEDIUM 4.4 | CVSS:3.0/AV:L/AC:L/PR:H/UI:N/S:U/C:N/I:H/A:N | cisco |
| CVSS 3.0 | MEDIUM 4.4 | CVSS:3.0/AV:L/AC:L/PR:H/UI:N/S:U/C:N/I:H/A:N | NVD · psirt@cisco.com (Secondary) |
| CVSS 3.0 | MEDIUM 4.4 | CVSS:3.0/AV:L/AC:L/PR:H/UI:N/S:U/C:N/I:H/A:N | NVD · nvd@nist.gov (Primary) |
| CVSS 2.0 | LOW 2.1 | AV:L/AC:L/Au:N/C:N/I:P/A:N | NVD · nvd@nist.gov (Primary) |
European references
- ENISA EUVD · EUVD-2019-10437
- GCVE · GCVE-0-2019-1880
Affected configurations (NVD CPE)
cpe:2.3:o:cisco:unified_computing_system_server_firmware:*:*:*:*:*:*:*:*< 4.0\(2g\)cpe:2.3:o:cisco:unified_computing_system_server_firmware:*:*:*:*:*:*:*:*< 3.0\(4l\)cpe:2.3:o:cisco:unified_computing_system_server_firmware:*:*:*:*:*:*:*:*≥ 4.0 < 4.0\(2g\)cpe:2.3:o:cisco:unified_computing_system_server_firmware:*:*:*:*:*:*:*:*< 4.0\(4c\)cpe:2.3:o:cisco:unified_computing_system_server_firmware:*:*:*:*:*:*:*:*< 3.0\(4l\)cpe:2.3:o:cisco:unified_computing_system_server_firmware:*:*:*:*:*:*:*:*≥ 4.0 < 4.0\(2g\)cpe:2.3:o:cisco:unified_computing_system_server_firmware:*:*:*:*:*:*:*:*< 4.0\(4c\)cpe:2.3:o:cisco:unified_computing_system_server_firmware:*:*:*:*:*:*:*:*< 3.0\(4l\)cpe:2.3:o:cisco:unified_computing_system_server_firmware:*:*:*:*:*:*:*:*≥ 4.0 < 4.0\(2g\)cpe:2.3:o:cisco:unified_computing_system_server_firmware:*:*:*:*:*:*:*:*< 4.0\(4c\)
Affected products
| Product | Versions |
|---|---|
| Cisco · Cisco Unified Computing System (Managed) | affected unspecified < 4.0(4c) |
Sources
| Source | Licence |
|---|---|
| CVE List (CVEProject cvelistV5) | CVE Program Terms of Use |
| EPSS (FIRST.org) | FIRST — attribution requested |
| ENISA EUVD | ENISA — reproduction authorised, source acknowledged |
| NVD (NIST) via fkie-cad/nvd-json-data-feeds | Public domain — this product uses data from the NVD API but is not endorsed or certified by the NVD |