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 .
References
Link | Resource |
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https://sec.cloudapps.cisco.com/security/center/content/CiscoSecurityAdvisory/cisco-sa-iosxr-bng-Gmg5Gxt | Vendor Advisory |
Configurations
Configuration 1 (hide)
AND |
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History
01 Aug 2025, 18:27
Type | Values Removed | Values Added |
---|---|---|
First Time |
Cisco asr 9901
Cisco asr 9912 Cisco asr 9902 Cisco asr 9910 Cisco asr 9906 Cisco asr 9903 Cisco asr 9010 Cisco asr 9922 Cisco Cisco asr 9904 Cisco asr 9006 Cisco ios Xr Cisco ios Xrv 9000 |
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References | () https://sec.cloudapps.cisco.com/security/center/content/CiscoSecurityAdvisory/cisco-sa-iosxr-bng-Gmg5Gxt - Vendor Advisory | |
CPE | 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:6.5.1:*:*:*:*:*:*:* cpe:2.3:h:cisco:asr_9902:-:*:*:*:*:*:*:* cpe:2.3:o:cisco:ios_xr:6.7.35:*:*:*:*:*:*:* cpe:2.3:o:cisco:ios_xr:6.6.25:*:*:*:*:*:*:* cpe:2.3:h:cisco:ios_xrv_9000:-:*:*:*:*:*:*:* cpe:2.3:o:cisco:ios_xr:7.3.3:*:*:*:*:*:*:* cpe:2.3:h:cisco:asr_9904:-:*:*:*:*:*:*:* cpe:2.3:o:cisco:ios_xr:6.8.2:*:*:*:*:*:*:* cpe:2.3:o:cisco:ios_xr:6.5.3:*:*:*:*:*:*:* cpe:2.3:h:cisco:asr_9922:-:*:*:*:*:*:*:* cpe:2.3:o:cisco:ios_xr:6.5.15:*:*:*:*:*:*:* cpe:2.3:h:cisco:asr_9910:-:*:*:*:*:*:*:* cpe:2.3:o:cisco:ios_xr:7.1.15:*:*:*:*:*:*:* cpe:2.3:o:cisco:ios_xr:7.3.1:*:*:*:*:*:*:* cpe:2.3:h:cisco:asr_9903:-:*:*:*:*:*:*:* cpe:2.3:o:cisco:ios_xr:7.4.1:*:*:*:*:*:*:* cpe:2.3:o:cisco:ios_xr:6.7.1:*:*:*:*:*:*:* cpe:2.3:h:cisco:asr_9010:-:*:*:*:*:*:*:* cpe:2.3:h:cisco:asr_9901:-:*:*:*:*:*:*:* cpe:2.3:o:cisco:ios_xr:7.0.90:*:*:*:*:*:*:* cpe:2.3:h:cisco:asr_9912:-:*:*:*:*:*:*:* cpe:2.3:o:cisco:ios_xr:7.1.2:*:*:*:*:*:*:* cpe:2.3:o:cisco:ios_xr:7.1.25:*:*:*:*:*:*:* cpe:2.3:h:cisco:asr_9006:-:*:*:*:*:*:*:* cpe:2.3:o:cisco:ios_xr:7.1.3:*:*:*:*:*:*:* cpe:2.3:o:cisco:ios_xr:7.0.2:*:*:*:*:*:*:* cpe:2.3:o:cisco:ios_xr:7.3.4:*:*:*:*:*:*:* cpe:2.3:o:cisco:ios_xr:7.1.1:*:*:*:*:*:*:* cpe:2.3:o:cisco:ios_xr:7.4.2:*:*:*:*:*:*:* cpe:2.3:o:cisco:ios_xr:7.3.2:*:*:*:*:*:*:* cpe:2.3:o:cisco:ios_xr:6.9.1:*:*:*:*:*:*:* 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:7.0.1:*:*:*:*:*:*:* cpe:2.3:o:cisco:ios_xr:6.6.1:*:*:*:*:*:*:* cpe:2.3:o:cisco:ios_xr:7.2.1:*:*:*:*:*:*:* cpe:2.3:o:cisco:ios_xr:6.8.1:*:*:*:*:*:*:* cpe:2.3:o:cisco:ios_xr:7.5.1:*:*:*:*:*:*:* cpe:2.3:h:cisco:asr_9906:-:*:*:*:*:*:*:* cpe:2.3:o:cisco:ios_xr:7.2.2:*:*:*:*:*:*:* cpe:2.3:o:cisco:ios_xr:6.6.2:*:*:*:*:*:*:* cpe:2.3:o:cisco:ios_xr:6.5.2:*:*:*:*:*:*:* |
18 Nov 2024, 17:11
Type | Values Removed | Values Added |
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Summary |
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15 Nov 2024, 16:15
Type | Values Removed | Values Added |
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New CVE |
Information
Published : 2024-11-15 16:15
Updated : 2025-08-01 18:27
NVD link : CVE-2022-20849
Mitre link : CVE-2022-20849
CVE.ORG link : CVE-2022-20849
JSON object : View
Products Affected
cisco
- asr_9904
- asr_9903
- ios_xr
- asr_9910
- asr_9912
- asr_9901
- asr_9906
- asr_9010
- ios_xrv_9000
- asr_9006
- asr_9922
- asr_9902
CWE
CWE-391
Unchecked Error Condition