CVE-2022-20849
Cisco IOS XR Software Broadband Network Gateway PPPoE Denial of Service Vulnerability
Severity Score
6.1
*CVSS v3.1
Exploit Likelihood
*EPSS
Affected Versions
*CPE
Public Exploits
0
*Multiple Sources
Exploited in Wild
-
*KEV
Decision
Track
*SSVC
Descriptions
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 .
*Credits:
N/A
CVSS Scores
Attack Vector
Attack Complexity
Privileges Required
User Interaction
Scope
Confidentiality
Integrity
Availability
* Common Vulnerability Scoring System
SSVC
- Decision:Track
Exploitation
Automatable
Tech. Impact
* Organization's Worst-case Scenario
Timeline
- 2021-11-02 CVE Reserved
- 2024-11-15 CVE Published
- 2024-11-15 CVE Updated
- 2024-11-16 EPSS Updated
- ---------- Exploited in Wild
- ---------- KEV Due Date
- ---------- First Exploit
CWE
- CWE-391: Unchecked Error Condition
CAPEC
References (1)
| URL | Tag | Source |
|---|---|---|
| https://sec.cloudapps.cisco.com/security/center/content/CiscoSecurityAdvisory/cisco-sa-iosxr-bng-Gmg5Gxt |
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Affected Vendors, Products, and Versions
| Vendor | Product | Version | Other | Status | ||||||
|---|---|---|---|---|---|---|---|---|---|---|
| Vendor | Product | Version | Other | Status | <-- --> | Vendor | Product | Version | Other | Status |
| Cisco Search vendor "Cisco" | Cisco IOS XR Software Search vendor "Cisco" for product "Cisco IOS XR Software" | 6.5.3 Search vendor "Cisco" for product "Cisco IOS XR Software" and version "6.5.3" | en |
Affected
| ||||||
| Cisco Search vendor "Cisco" | Cisco IOS XR Software Search vendor "Cisco" for product "Cisco IOS XR Software" | 6.6.1 Search vendor "Cisco" for product "Cisco IOS XR Software" and version "6.6.1" | en |
Affected
| ||||||
| Cisco Search vendor "Cisco" | Cisco IOS XR Software Search vendor "Cisco" for product "Cisco IOS XR Software" | 6.5.15 Search vendor "Cisco" for product "Cisco IOS XR Software" and version "6.5.15" | en |
Affected
| ||||||
| Cisco Search vendor "Cisco" | Cisco IOS XR Software Search vendor "Cisco" for product "Cisco IOS XR Software" | 7.0.1 Search vendor "Cisco" for product "Cisco IOS XR Software" and version "7.0.1" | en |
Affected
| ||||||
| Cisco Search vendor "Cisco" | Cisco IOS XR Software Search vendor "Cisco" for product "Cisco IOS XR Software" | 6.6.25 Search vendor "Cisco" for product "Cisco IOS XR Software" and version "6.6.25" | en |
Affected
| ||||||
| Cisco Search vendor "Cisco" | Cisco IOS XR Software Search vendor "Cisco" for product "Cisco IOS XR Software" | 6.6.2 Search vendor "Cisco" for product "Cisco IOS XR Software" and version "6.6.2" | en |
Affected
| ||||||
| Cisco Search vendor "Cisco" | Cisco IOS XR Software Search vendor "Cisco" for product "Cisco IOS XR Software" | 6.5.1 Search vendor "Cisco" for product "Cisco IOS XR Software" and version "6.5.1" | en |
Affected
| ||||||
| Cisco Search vendor "Cisco" | Cisco IOS XR Software Search vendor "Cisco" for product "Cisco IOS XR Software" | 6.5.2 Search vendor "Cisco" for product "Cisco IOS XR Software" and version "6.5.2" | en |
Affected
| ||||||
| Cisco Search vendor "Cisco" | Cisco IOS XR Software Search vendor "Cisco" for product "Cisco IOS XR Software" | 7.1.1 Search vendor "Cisco" for product "Cisco IOS XR Software" and version "7.1.1" | en |
Affected
| ||||||
| Cisco Search vendor "Cisco" | Cisco IOS XR Software Search vendor "Cisco" for product "Cisco IOS XR Software" | 7.0.90 Search vendor "Cisco" for product "Cisco IOS XR Software" and version "7.0.90" | en |
Affected
| ||||||
| Cisco Search vendor "Cisco" | Cisco IOS XR Software Search vendor "Cisco" for product "Cisco IOS XR Software" | 6.6.3 Search vendor "Cisco" for product "Cisco IOS XR Software" and version "6.6.3" | en |
Affected
| ||||||
| Cisco Search vendor "Cisco" | Cisco IOS XR Software Search vendor "Cisco" for product "Cisco IOS XR Software" | 6.7.1 Search vendor "Cisco" for product "Cisco IOS XR Software" and version "6.7.1" | en |
Affected
| ||||||
| Cisco Search vendor "Cisco" | Cisco IOS XR Software Search vendor "Cisco" for product "Cisco IOS XR Software" | 7.0.2 Search vendor "Cisco" for product "Cisco IOS XR Software" and version "7.0.2" | en |
Affected
| ||||||
| Cisco Search vendor "Cisco" | Cisco IOS XR Software Search vendor "Cisco" for product "Cisco IOS XR Software" | 7.1.15 Search vendor "Cisco" for product "Cisco IOS XR Software" and version "7.1.15" | en |
Affected
| ||||||
| Cisco Search vendor "Cisco" | Cisco IOS XR Software Search vendor "Cisco" for product "Cisco IOS XR Software" | 7.1.2 Search vendor "Cisco" for product "Cisco IOS XR Software" and version "7.1.2" | en |
Affected
| ||||||
| Cisco Search vendor "Cisco" | Cisco IOS XR Software Search vendor "Cisco" for product "Cisco IOS XR Software" | 7.2.1 Search vendor "Cisco" for product "Cisco IOS XR Software" and version "7.2.1" | en |
Affected
| ||||||
| Cisco Search vendor "Cisco" | Cisco IOS XR Software Search vendor "Cisco" for product "Cisco IOS XR Software" | 6.7.2 Search vendor "Cisco" for product "Cisco IOS XR Software" and version "6.7.2" | en |
Affected
| ||||||
| Cisco Search vendor "Cisco" | Cisco IOS XR Software Search vendor "Cisco" for product "Cisco IOS XR Software" | 7.1.25 Search vendor "Cisco" for product "Cisco IOS XR Software" and version "7.1.25" | en |
Affected
| ||||||
| Cisco Search vendor "Cisco" | Cisco IOS XR Software Search vendor "Cisco" for product "Cisco IOS XR Software" | 6.6.4 Search vendor "Cisco" for product "Cisco IOS XR Software" and version "6.6.4" | en |
Affected
| ||||||
| Cisco Search vendor "Cisco" | Cisco IOS XR Software Search vendor "Cisco" for product "Cisco IOS XR Software" | 7.3.1 Search vendor "Cisco" for product "Cisco IOS XR Software" and version "7.3.1" | en |
Affected
| ||||||
| Cisco Search vendor "Cisco" | Cisco IOS XR Software Search vendor "Cisco" for product "Cisco IOS XR Software" | 7.1.3 Search vendor "Cisco" for product "Cisco IOS XR Software" and version "7.1.3" | en |
Affected
| ||||||
| Cisco Search vendor "Cisco" | Cisco IOS XR Software Search vendor "Cisco" for product "Cisco IOS XR Software" | 6.7.3 Search vendor "Cisco" for product "Cisco IOS XR Software" and version "6.7.3" | en |
Affected
| ||||||
| Cisco Search vendor "Cisco" | Cisco IOS XR Software Search vendor "Cisco" for product "Cisco IOS XR Software" | 7.4.1 Search vendor "Cisco" for product "Cisco IOS XR Software" and version "7.4.1" | en |
Affected
| ||||||
| Cisco Search vendor "Cisco" | Cisco IOS XR Software Search vendor "Cisco" for product "Cisco IOS XR Software" | 7.2.2 Search vendor "Cisco" for product "Cisco IOS XR Software" and version "7.2.2" | en |
Affected
| ||||||
| Cisco Search vendor "Cisco" | Cisco IOS XR Software Search vendor "Cisco" for product "Cisco IOS XR Software" | 6.8.1 Search vendor "Cisco" for product "Cisco IOS XR Software" and version "6.8.1" | en |
Affected
| ||||||
| Cisco Search vendor "Cisco" | Cisco IOS XR Software Search vendor "Cisco" for product "Cisco IOS XR Software" | 7.3.2 Search vendor "Cisco" for product "Cisco IOS XR Software" and version "7.3.2" | en |
Affected
| ||||||
| Cisco Search vendor "Cisco" | Cisco IOS XR Software Search vendor "Cisco" for product "Cisco IOS XR Software" | 7.5.1 Search vendor "Cisco" for product "Cisco IOS XR Software" and version "7.5.1" | en |
Affected
| ||||||
| Cisco Search vendor "Cisco" | Cisco IOS XR Software Search vendor "Cisco" for product "Cisco IOS XR Software" | 7.3.3 Search vendor "Cisco" for product "Cisco IOS XR Software" and version "7.3.3" | en |
Affected
| ||||||
| Cisco Search vendor "Cisco" | Cisco IOS XR Software Search vendor "Cisco" for product "Cisco IOS XR Software" | 6.8.2 Search vendor "Cisco" for product "Cisco IOS XR Software" and version "6.8.2" | en |
Affected
| ||||||
| Cisco Search vendor "Cisco" | Cisco IOS XR Software Search vendor "Cisco" for product "Cisco IOS XR Software" | 7.3.4 Search vendor "Cisco" for product "Cisco IOS XR Software" and version "7.3.4" | en |
Affected
| ||||||
| Cisco Search vendor "Cisco" | Cisco IOS XR Software Search vendor "Cisco" for product "Cisco IOS XR Software" | 7.4.2 Search vendor "Cisco" for product "Cisco IOS XR Software" and version "7.4.2" | en |
Affected
| ||||||
| Cisco Search vendor "Cisco" | Cisco IOS XR Software Search vendor "Cisco" for product "Cisco IOS XR Software" | 6.7.35 Search vendor "Cisco" for product "Cisco IOS XR Software" and version "6.7.35" | en |
Affected
| ||||||
| Cisco Search vendor "Cisco" | Cisco IOS XR Software Search vendor "Cisco" for product "Cisco IOS XR Software" | 6.9.1 Search vendor "Cisco" for product "Cisco IOS XR Software" and version "6.9.1" | en |
Affected
| ||||||