Cisco FXOS and NX-OS Software Link Layer Discovery Protocol Denial of Service Vulnerability (Cisco Cisco NX-OS Software)
At a glance
- Source
- NVD
- EPSS
- EPSS 0.79 % · percentile 56 ()
- State
- PUBLISHED
- Published
- Updated
- Assigner
- cisco
- NVD status
- Modified
Description
A vulnerability in the Link Layer Discovery Protocol (LLDP) implementation for Cisco FXOS Software and Cisco NX-OS Software could allow an unauthenticated, adjacent attacker to cause a denial of service (DoS) condition when the device unexpectedly reloads. The vulnerability is due to improper input validation of certain type, length, value (TLV) fields of the LLDP frame header. An attacker could exploit this vulnerability by sending a crafted LLDP packet to an interface on the targeted device. A successful exploit could allow the attacker to cause the switch to reload unexpectedly.
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 3.0 | 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 3.0 | MEDIUM 5.3 | CVSS:3.0/AV:A/AC:H/PR:N/UI:N/S:U/C:N/I:N/A:H | NVD · nvd@nist.gov (Primary) |
| CVSS 2.0 | LOW 2.9 | AV:A/AC:M/Au:N/C:N/I:N/A:P | NVD · nvd@nist.gov (Primary) |
European references
- ENISA EUVD · EUVD-2018-1218
- GCVE · GCVE-0-2018-0395
CERT-FR advisories
- CERTFR-2018-AVI-502 — Multiples vulnérabilités dans les produits Cisco · cert.ssi.gouv.fr
Affected configurations (NVD CPE)
cpe:2.3:o:cisco:nx-os:6.0\(4\):*:*:*:*:*:*:*cpe:2.3:o:cisco:nx-os:6.1\(3\)s2:*:*:*:*:*:*:*cpe:2.3:o:cisco:firepower_extensible_operating_system:r231:*:*:*:*:*:*:*cpe:2.3:o:cisco:nx-os:r231:*:*:*:*:*:*:*cpe:2.3:o:cisco:nx-os:12.3\(1e\):*:*:*:*:*:*:*cpe:2.3:o:cisco:nx-os:3.2\(3d\)c:*:*:*:*:*:*:*
Affected products
| Product | Versions |
|---|---|
| Cisco · Cisco NX-OS Software | affected unspecified < 6.2(1) |
| Cisco · Firepower 4100 Series Next-Generation Firewalls | affected unspecified < <2.3.1.58 |
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 |