Cisco IOS XR Software IP Service Level Agreements and Two-Way Active Measurement Protocol Denial of Service Vulnerability (Cisco Cisco IOS XR Software)
At a glance
- Source
- NVD
- EPSS
- EPSS 1.29 % · percentile 70 ()
- State
- PUBLISHED
- Published
- Updated
- Assigner
- cisco
- NVD status
- Modified
Description
A vulnerability in the IP Service Level Agreements (IP SLA) responder and Two-Way Active Measurement Protocol (TWAMP) features of Cisco IOS XR Software could allow an unauthenticated, remote attacker to cause device packet memory to become exhausted or cause the IP SLA process to crash, resulting in a denial of service (DoS) condition. This vulnerability exists because socket creation failures are mishandled during the IP SLA and TWAMP processes. An attacker could exploit this vulnerability by sending specific IP SLA or TWAMP packets to an affected device. A successful exploit could allow the attacker to exhaust the packet memory, which will impact other processes, such as routing protocols, or crash the IP SLA process.
Weaknesses (CWE)
- CWE-771 — Missing Reference to Active Allocated Resource
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 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 | MEDIUM 4.3 | AV:N/AC:M/Au:N/C:N/I:N/A:P | NVD · nvd@nist.gov (Primary) |
European references
- ENISA EUVD · EUVD-2021-21370
- GCVE · GCVE-0-2021-34720
CERT-FR advisories
- CERTFR-2021-AVI-691 — Multiples vulnérabilités dans Cisco IOS XR · cert.ssi.gouv.fr
Affected configurations (NVD CPE)
cpe:2.3:o:cisco:ios_xr:*:*:*:*:*:*:*:*< 6.2.3cpe:2.3:o:cisco:ios_xr:*:*:*:*:*:*:*:*≥ 6.3.0 < 6.3.2cpe:2.3:o:cisco:ios_xr:*:*:*:*:*:*:*:*≥ 6.5.0 < 7.2.2cpe:2.3:o:cisco:ios_xr:*:*:*:*:*:*:*:*< 6.2.3cpe:2.3:o:cisco:ios_xr:*:*:*:*:*:*:*:*≥ 6.3.0 < 6.3.2cpe:2.3:o:cisco:ios_xr:*:*:*:*:*:*:*:*≥ 6.5.0 < 7.2.2cpe:2.3:o:cisco:ios_xr:*:*:*:*:*:*:*:*< 6.2.3cpe:2.3:o:cisco:ios_xr:*:*:*:*:*:*:*:*≥ 6.3.0 < 6.3.2cpe:2.3:o:cisco:ios_xr:*:*:*:*:*:*:*:*≥ 6.5.0 < 7.2.2cpe:2.3:o:cisco:ios_xr:*:*:*:*:*:*:*:*< 6.2.3cpe:2.3:o:cisco:ios_xr:*:*:*:*:*:*:*:*≥ 6.3.0 < 6.3.2cpe:2.3:o:cisco:ios_xr:*:*:*:*:*:*:*:*≥ 6.5.0 < 7.2.2cpe:2.3:o:cisco:ios_xr:*:*:*:*:*:*:*:*< 6.2.3cpe:2.3:o:cisco:ios_xr:*:*:*:*:*:*:*:*≥ 6.3.0 < 6.3.2cpe:2.3:o:cisco:ios_xr:*:*:*:*:*:*:*:*≥ 6.5.0 < 7.2.2cpe:2.3:o:cisco:ios_xr:*:*:*:*:*:*:*:*< 6.2.3cpe:2.3:o:cisco:ios_xr:*:*:*:*:*:*:*:*≥ 6.3.0 < 6.3.2cpe:2.3:o:cisco:ios_xr:*:*:*:*:*:*:*:*≥ 6.5.0 < 7.2.2cpe:2.3:o:cisco:ios_xr:*:*:*:*:*:*:*:*< 6.2.3cpe:2.3:o:cisco:ios_xr:*:*:*:*:*:*:*:*≥ 6.3.0 < 6.3.2cpe:2.3:o:cisco:ios_xr:*:*:*:*:*:*:*:*≥ 6.5.0 < 7.2.2cpe:2.3:o:cisco:ios_xr:*:*:*:*:*:*:*:*< 6.2.3cpe:2.3:o:cisco:ios_xr:*:*:*:*:*:*:*:*≥ 6.3.0 < 6.3.2cpe:2.3:o:cisco:ios_xr:*:*:*:*:*:*:*:*≥ 6.5.0 < 7.2.2cpe:2.3:o:cisco:ios_xr:*:*:*:*:*:*:*:*< 6.2.3cpe:2.3:o:cisco:ios_xr:*:*:*:*:*:*:*:*≥ 6.3.0 < 6.3.2cpe:2.3:o:cisco:ios_xr:*:*:*:*:*:*:*:*≥ 6.5.0 < 7.2.2
Affected products
| Product | 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 |