Cisco IOS XR Software Broadband Network Gateway PPPoE Denial of Service Vulnerability (Cisco Cisco IOS XR Software)
At a glance
- Source
- NVD
- EPSS
- EPSS 0.28 % · percentile 20 ()
- State
- PUBLISHED
- Published
- Updated
- Assigner
- cisco
- NVD status
- Analyzed
Description
A vulnerability in the Broadband Network Gateway PPP over Ethernet (PPPoE) feature of Cisco IOS XR Software could allow an unauthenticated, adjacent attacker to cause the PPPoE process to continually crash. This vulnerability exists because the PPPoE feature does not properly handle an error condition within a specific crafted packet sequence. An attacker could exploit this vulnerability by sending a sequence of specific PPPoE packets from controlled customer premises equipment (CPE). A successful exploit could allow the attacker to cause the PPPoE process to continually restart, resulting in a denial of service condition (DoS).Cisco has released software updates that address this vulnerability. There are no workarounds that address this vulnerability.This advisory is part of the September 2022 release of the Cisco IOS XR Software Security Advisory Bundled Publication. For a complete list of the advisories and links to them, see .
Weaknesses (CWE)
- CWE-391 — DEPRECATED: Unchecked Error Condition
References
Scores
| Version | Score | Vector | Scored by |
|---|---|---|---|
| CVSS 3.1 | MEDIUM 6.1 | CVSS:3.1/AV:A/AC:H/PR:N/UI:N/S:C/C:N/I:N/A:H | cisco |
| CVSS 3.1 | MEDIUM 6.1 | CVSS:3.1/AV:A/AC:H/PR:N/UI:N/S:C/C:N/I:N/A:H | NVD · psirt@cisco.com (Secondary) |
European references
- ENISA EUVD · EUVD-2022-26099
- GCVE · GCVE-0-2022-20849
Affected configurations (NVD CPE)
cpe:2.3:o:cisco:ios_xr:6.5.1:*:*:*:*:*:*:*cpe:2.3:o:cisco:ios_xr:6.5.2:*:*:*:*:*:*:*cpe:2.3:o:cisco:ios_xr:6.5.3:*:*:*:*:*:*:*cpe:2.3:o:cisco:ios_xr:6.5.15:*:*:*:*:*:*:*cpe:2.3:o:cisco:ios_xr:6.6.1:*:*:*:*:*:*:*cpe:2.3:o:cisco:ios_xr:6.6.2:*:*:*:*:*:*:*cpe:2.3:o:cisco:ios_xr:6.6.3:*:*:*:*:*:*:*cpe:2.3:o:cisco:ios_xr:6.6.4:*:*:*:*:*:*:*cpe:2.3:o:cisco:ios_xr:6.6.25:*:*:*:*:*:*:*cpe:2.3:o:cisco:ios_xr:6.7.1:*:*:*:*:*:*:*cpe:2.3:o:cisco:ios_xr:6.7.2:*:*:*:*:*:*:*cpe:2.3:o:cisco:ios_xr:6.7.3:*:*:*:*:*:*:*cpe:2.3:o:cisco:ios_xr:6.7.35:*:*:*:*:*:*:*cpe:2.3:o:cisco:ios_xr:6.8.1:*:*:*:*:*:*:*cpe:2.3:o:cisco:ios_xr:6.8.2:*:*:*:*:*:*:*cpe:2.3:o:cisco:ios_xr:6.9.1:*:*:*:*:*:*:*cpe:2.3:o:cisco:ios_xr:7.0.1:*:*:*:*:*:*:*cpe:2.3:o:cisco:ios_xr:7.0.2:*:*:*:*:*:*:*cpe:2.3:o:cisco:ios_xr:7.0.90:*:*:*:*:*:*:*cpe:2.3:o:cisco:ios_xr:7.1.1:*:*:*:*:*:*:*cpe:2.3:o:cisco:ios_xr:7.1.2:*:*:*:*:*:*:*cpe:2.3:o:cisco:ios_xr:7.1.3:*:*:*:*:*:*:*cpe:2.3:o:cisco:ios_xr:7.1.15:*:*:*:*:*:*:*cpe:2.3:o:cisco:ios_xr:7.1.25:*:*:*:*:*:*:*cpe:2.3:o:cisco:ios_xr:7.2.1:*:*:*:*:*:*:*cpe:2.3:o:cisco:ios_xr:7.2.2:*:*:*:*:*:*:*cpe:2.3:o:cisco:ios_xr:7.3.1:*:*:*:*:*:*:*cpe:2.3:o:cisco:ios_xr:7.3.2:*:*:*:*:*:*:*cpe:2.3:o:cisco:ios_xr:7.3.3:*:*:*:*:*:*:*cpe:2.3:o:cisco:ios_xr:7.3.4:*:*:*:*:*:*:*cpe:2.3:o:cisco:ios_xr:7.4.1:*:*:*:*:*:*:*cpe:2.3:o:cisco:ios_xr:7.4.2:*:*:*:*:*:*:*cpe:2.3:o:cisco:ios_xr:7.5.1:*:*:*:*:*:*:*
Affected products
| Product | Versions |
|---|---|
| Cisco · Cisco IOS XR Software | affected 6.5.3 ; affected 6.6.1 ; affected 6.5.15 ; affected 7.0.1 ; affected 6.6.25 ; affected 6.6.2 |
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 |
| 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 |