Cisco IOS XR
At a glance
- Source
- NVD
- EPSS
- EPSS 0.82 % · percentile 57 ()
- State
- PUBLISHED
- Published
- Updated
- Assigner
- cisco
- NVD status
- Modified
Description
A vulnerability in the UDP broadcast forwarding function of Cisco IOS XR Software could allow an unauthenticated, adjacent attacker to cause a denial of service (DoS) condition on the affected device. The vulnerability is due to improper handling of UDP broadcast packets that are forwarded to an IPv4 helper address. An attacker could exploit this vulnerability by sending multiple UDP broadcast packets to the affected device. An exploit could allow the attacker to cause a buffer leak on the affected device, eventually resulting in a DoS condition requiring manual intervention to recover. This vulnerability affects all Cisco IOS XR platforms running 6.3.1, 6.2.3, or earlier releases of Cisco IOS XR Software when at least one IPv4 helper address is configured on an interface of the device. Cisco Bug IDs: CSCvi35625.
Weaknesses (CWE)
References
Scores
| Version | Score | Vector | Scored by |
|---|---|---|---|
| CVSS 3.0 | HIGH 7.4 | CVSS:3.0/AV:A/AC:L/PR:N/UI:N/S:C/C:N/I:N/A:H | NVD · nvd@nist.gov (Primary) |
| CVSS 2.0 | MEDIUM 6.1 | AV:A/AC:L/Au:N/C:N/I:N/A:C | NVD · nvd@nist.gov (Primary) |
European references
- ENISA EUVD · EUVD-2018-1064
- GCVE · GCVE-0-2018-0241
CERT-FR advisories
- CERTFR-2018-AVI-194 — Multiples vulnérabilités dans les produits Cisco · cert.ssi.gouv.fr
Affected configurations (NVD CPE)
cpe:2.3:o:cisco:ios_xr:4.0.4.base:*:*:*:*:*:*:*cpe:2.3:o:cisco:ios_xr:4.1.3.base:*:*:*:*:*:*:*cpe:2.3:o:cisco:ios_xr:4.2.4.base:*:*:*:*:*:*:*cpe:2.3:o:cisco:ios_xr:4.3.4.base:*:*:*:*:*:*:*cpe:2.3:o:cisco:ios_xr:4.4.3.ce:*:*:*:*:*:*:*cpe:2.3:o:cisco:ios_xr:5.0.3.ce:*:*:*:*:*:*:*cpe:2.3:o:cisco:ios_xr:5.1.4.base:*:*:*:*:*:*:*cpe:2.3:o:cisco:ios_xr:5.2.5.ce:*:*:*:*:*:*:*cpe:2.3:o:cisco:ios_xr:5.3.4.base:*:*:*:*:*:*:*cpe:2.3:o:cisco:ios_xr:5.4.3.ce:*:*:*:*:*:*:*cpe:2.3:o:cisco:ios_xr:6.0.4.base:*:*:*:*:*:*:*cpe:2.3:o:cisco:ios_xr:6.1.4.base:*:*:*:*:*:*:*cpe:2.3:o:cisco:ios_xr:6.2.3.base:*:*:*:*:*:*:*
Affected products
| Product | Versions |
|---|---|
| Cisco IOS XR | affected Cisco IOS XR |
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 |