Cisco FXOS and NX-OS Software Cisco Discovery Protocol Arbitrary Code Execution and Denial of Service Vulnerability (Cisco Cisco Unified Computing System (Managed))
At a glance
- Source
- NVD
- EPSS
- EPSS 1.89 % · percentile 80 ()
- State
- PUBLISHED
- Published
- Updated
- Assigner
- cisco
- NVD status
- Undergoing Analysis
Description
A vulnerability in the Cisco Discovery Protocol feature of Cisco FXOS Software and Cisco NX-OS Software could allow an unauthenticated, adjacent attacker to execute arbitrary code as root or cause a denial of service (DoS) condition on an affected device. The vulnerability exists because of insufficiently validated Cisco Discovery Protocol packet headers. An attacker could exploit this vulnerability by sending a crafted Cisco Discovery Protocol packet to a Layer 2-adjacent affected device. A successful exploit could allow the attacker to cause a buffer overflow that could allow the attacker to execute arbitrary code as root or cause a DoS condition on the affected device. Note: Cisco Discovery Protocol is a Layer 2 protocol. To exploit this vulnerability, an attacker must be in the same broadcast domain as the affected device (Layer 2 adjacent). Note: This vulnerability is different from the following Cisco FXOS and NX-OS Software Cisco Discovery Protocol vulnerabilities that Cisco announced on Feb. 5, 2020: Cisco FXOS, IOS XR, and NX-OS Software Cisco Discovery Protocol Denial of Service Vulnerability and Cisco NX-OS Software Cisco Discovery Protocol Remote Code Execution Vulnerability.
Weaknesses (CWE)
- CWE-20 — Improper Input Validation
References
Scores
| Version | Score | Vector | Scored by |
|---|---|---|---|
| CVSS 3.0 | HIGH 8.8 | CVSS:3.0/AV:A/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H | cisco |
| CVSS 3.1 | HIGH 8.8 | CVSS:3.1/AV:A/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H | NVD · nvd@nist.gov (Primary) |
| CVSS 3.0 | HIGH 8.8 | CVSS:3.0/AV:A/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H | NVD · psirt@cisco.com (Secondary) |
| CVSS 2.0 | HIGH 8.3 | AV:A/AC:L/Au:N/C:C/I:C/A:C | NVD · nvd@nist.gov (Primary) |
European references
- ENISA EUVD · EUVD-2020-24443
- GCVE · GCVE-0-2020-3172
CERT-FR advisories
- CERTFR-2020-AVI-118 — Multiples vulnérabilités dans les produits Cisco · cert.ssi.gouv.fr
Affected configurations (NVD CPE)
cpe:2.3:o:cisco:firepower_extensible_operating_system:*:*:*:*:*:*:*:*< 2.6.1.187cpe:2.3:o:cisco:firepower_extensible_operating_system:*:*:*:*:*:*:*:*≥ 2.7 < 2.7.1.106cpe:2.3:a:cisco:ucs_manager:*:*:*:*:*:*:*:*< 3.2\(3n\)cpe:2.3:a:cisco:ucs_manager:*:*:*:*:*:*:*:*≥ 4.0 < 4.0\(4g\)cpe:2.3:o:cisco:nx-os:-:*:*:*:*:*:*:*cpe:2.3:o:cisco:nx-os:5.2\(1\)sv5\(1.2\):*:*:*:*:hyper-v:*:*cpe:2.3:o:cisco:nx-os:5.2\(1\)sv5\(1.2\):*:*:*:*:vsphere:*:*cpe:2.3:o:cisco:nx-os:-:*:*:*:*:*:*:*cpe:2.3:o:cisco:nx-os:7.3\(5\)n1\(1\):*:*:*:*:*:*:*cpe:2.3:o:cisco:nx-os:-:*:*:*:*:*:*:*cpe:2.3:o:cisco:nx-os:7.3\(0\)d1\(0.140\):*:*:*:*:*:*:*cpe:2.3:o:cisco:nx-os:7.3\(0\)d1\(0.146\):*:*:*:*:*:*:*cpe:2.3:o:cisco:nx-os:7.0\(3\)i3\(0.191\):*:*:*:*:*:*:*cpe:2.3:o:cisco:nx-os:13.2\(7.230\):*:*:*:*:*:*:*cpe:2.3:o:cisco:nx-os:14.2\(1i\):*:*:*:*:*:*:*
Affected products
| Product | Versions |
|---|---|
| Cisco · Cisco Unified Computing System (Managed) | affected unspecified < 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 |