Cisco IOS XR Software for Cisco ASR 9000 Series Aggregation Services Routers Slow Path Forwarding Denial of Service Vulnerability (Cisco Cisco IOS XR Software)
En bref
- Source
- NVD
- EPSS
- EPSS 1.90 % · centile 80 ()
- État
- PUBLISHED
- Publiée
- Mise à jour
- Attribuée par
- cisco
- Statut NVD
- Modified
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Description
A vulnerability in the ingress packet processing function of Cisco IOS XR Software for Cisco ASR 9000 Series Aggregation Services Routers could allow an unauthenticated, remote attacker to cause a denial of service (DoS) condition on an affected device. The vulnerability is due to improper resource allocation when an affected device processes network traffic in software switching mode (punted). An attacker could exploit this vulnerability by sending specific streams of Layer 2 or Layer 3 protocol data units (PDUs) to an affected device. A successful exploit could cause the affected device to run out of buffer resources, which could make the device unable to process or forward traffic, resulting in a DoS condition. The device would need to be restarted to regain functionality.
Faiblesses (CWE)
- CWE-404 — Fermeture ou libération incorrecte d'une ressource
Références
Scores
| Version | Score | Vecteur | Évalué par |
|---|---|---|---|
| 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 8.6 | CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:C/C:N/I:N/A:H | NVD · nvd@nist.gov (Primary) |
| CVSS 2.0 | HIGH 7.8 | AV:N/AC:L/Au:N/C:N/I:N/A:C | NVD · nvd@nist.gov (Primary) |
Références européennes
- ENISA EUVD · EUVD-2020-18700
- GCVE · GCVE-0-2020-26070
Avis du CERT-FR
- CERTFR-2021-AVI-112 — Vulnérabilité dans Cisco IOS XR · cert.ssi.gouv.fr
- CERTFR-2020-AVI-729 — Vulnérabilité dans Cisco IOS XR · cert.ssi.gouv.fr
Configurations affectées (CPE NVD)
cpe:2.3:o:cisco:ios_xr:*:*:*:*:*:*:*:*< 6.7.2cpe:2.3:o:cisco:ios_xr:*:*:*:*:*:*:*:*≥ 7.1.0 < 7.1.2
Produits affectés
| Produit | Versions |
|---|---|
| Cisco · Cisco IOS XR 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 |