Cisco Nexus 9000 Series Switches Bidirectional Forwarding Detection Denial of Service Vulnerability (Cisco Cisco NX-OS Software)
At a glance
- Source
- NVD
- EPSS
- EPSS 11.86 % · percentile 96 ()
- State
- PUBLISHED
- Published
- Updated
- Assigner
- cisco
- NVD status
- Undergoing Analysis
Description
A vulnerability in the rate limiter for Bidirectional Forwarding Detection (BFD) traffic of Cisco NX-OS Software for Cisco Nexus 9000 Series Switches could allow an unauthenticated, remote attacker to cause BFD traffic to be dropped on an affected device. This vulnerability is due to a logic error in the BFD rate limiter functionality. An attacker could exploit this vulnerability by sending a crafted stream of traffic through the device. A successful exploit could allow the attacker to cause BFD traffic to be dropped, resulting in BFD session flaps. BFD session flaps can cause route instability and dropped traffic, resulting in a denial of service (DoS) condition. This vulnerability applies to both IPv4 and IPv6 traffic.
Weaknesses (CWE)
References
Scores
| Version | Score | Vector | Scored by |
|---|---|---|---|
| CVSS 3.1 | HIGH 8.6 | CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:C/C:N/I:N/A:H | cisco |
| CVSS 3.1 | HIGH 8.6 | CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:C/C:N/I:N/A:H | NVD · psirt@cisco.com (Secondary) |
| CVSS 3.1 | HIGH 7.5 | CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H | NVD · nvd@nist.gov (Primary) |
| CVSS 2.0 | HIGH 7.1 | AV:N/AC:M/Au:N/C:N/I:N/A:C | NVD · nvd@nist.gov (Primary) |
European references
- ENISA EUVD · EUVD-2022-25873
- GCVE · GCVE-0-2022-20623
CERT-FR advisories
- CERTFR-2022-AVI-183 — Multiples vulnérabilités dans Cisco NX-OS et Nexus · cert.ssi.gouv.fr
Affected configurations (NVD CPE)
cpe:2.3:o:cisco:nx-os:*:*:*:*:*:*:*:*≥ 7.0\(3\)i6\(2\) ≤ 7.0\(3\)i7\(3\)cpe:2.3:o:cisco:nx-os:*:*:*:*:*:*:*:*≥ 7.0\(3\)i6\(2\) ≤ 9.3\(8\)cpe:2.3:o:cisco:nx-os:*:*:*:*:*:*:*:*≥ 10.1\(1\) ≤ 10.2\(1\)
Affected products
| Product | Versions |
|---|---|
| Cisco · Cisco NX-OS 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 |