Cisco IOS XE ROM Monitor Software Vulnerability (Cisco Cisco IOS XE ROMMON Software)
At a glance
- Source
- NVD
- EPSS
- EPSS 0.29 % · percentile 21 ()
- State
- PUBLISHED
- Published
- Updated
- Assigner
- cisco
- NVD status
- Modified
Description
A vulnerability in the Cisco IOS XE ROM Monitor (ROMMON) Software for Cisco 4000 Series Integrated Services Routers, Cisco ASR 920 Series Aggregation Services Routers, Cisco ASR 1000 Series Aggregation Services Routers, and Cisco cBR-8 Converged Broadband Routers could allow an unauthenticated, physical attacker to break the chain of trust and load a compromised software image on an affected device. The vulnerability is due to the presence of a debugging configuration option in the affected software. An attacker could exploit this vulnerability by connecting to an affected device through the console, forcing the device into ROMMON mode, and writing a malicious pattern using that specific option on the device. A successful exploit could allow the attacker to break the chain of trust 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.
Weaknesses (CWE)
References
Scores
| Version | Score | Vector | Scored by |
|---|---|---|---|
| CVSS 3.0 | MEDIUM 6.4 | CVSS:3.0/AV:P/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:H | cisco |
| CVSS 3.1 | MEDIUM 6.8 | CVSS:3.1/AV:P/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H | NVD · nvd@nist.gov (Primary) |
| CVSS 3.0 | MEDIUM 6.4 | CVSS:3.0/AV:P/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:H | NVD · psirt@cisco.com (Secondary) |
| CVSS 2.0 | MEDIUM 6.9 | AV:L/AC:M/Au:N/C:C/I:C/A:C | NVD · nvd@nist.gov (Primary) |
European references
- ENISA EUVD · EUVD-2020-24795
- GCVE · GCVE-0-2020-3524
CERT-FR advisories
- CERTFR-2020-AVI-603 — Multiples vulnérabilités dans certains produits Cisco · cert.ssi.gouv.fr
- CERTFR-2020-AVI-599 — Multiples vulnérabilités de type déni de service dans Cisco IOS, IOS XE, AireOS · cert.ssi.gouv.fr
Affected configurations (NVD CPE)
cpe:2.3:o:cisco:ios_xe_rom_monitor:*:*:*:*:*:*:*:*< 16.2\(1r\)cpe:2.3:o:cisco:ios_xe_rom_monitor:*:*:*:*:*:*:*:*< 15.6\(18r\)cpe:2.3:o:cisco:ios_xe_rom_monitor:*:*:*:*:*:*:*:*< 16.2\(1r\)cpe:2.3:o:cisco:ios_xe_rom_monitor:*:*:*:*:*:*:*:*< 16.4\(1r\)s
Affected products
| Product | Versions |
|---|---|
| Cisco · Cisco IOS XE ROMMON Software | affected n/a |
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 |
| CERT-FR (ANSSI) | Licence Ouverte / Etalab 2.0 |
| 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 |