A vulnerability in the Layer 3 multicast feature of Cisco IOS XR Software for Cisco ASR 9000 Series Aggregation Services Routers, ASR 9902 Compact High-Performance Routers, and ASR 9903 Compact High-Performance Routers could allow an unauthenticated, remote attacker to cause a line card to reset, resulting in a denial of service (DoS) condition.
This vulnerability is due to the incorrect handling of malformed IPv4 multicast packets that are received on line cards where the interface has either an IPv4 access control list (ACL) or a QoS policy applied. An attacker could exploit this vulnerability by sending crafted IPv4 multicast packets through an affected device. A successful exploit could allow the attacker to cause line card exceptions or a hard reset. Traffic over that line card would be lost while the line card reloads.
References
Link | Resource |
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https://blog.apnic.net/2024/09/02/crafting-endless-as-paths-in-bgp/ | Not Applicable |
https://sec.cloudapps.cisco.com/security/center/content/CiscoSecurityAdvisory/cisco-sa-multicast-ERMrSvq7 | Vendor Advisory |
Configurations
Configuration 1 (hide)
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History
01 Aug 2025, 18:50
Type | Values Removed | Values Added |
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References | () https://blog.apnic.net/2024/09/02/crafting-endless-as-paths-in-bgp/ - Not Applicable | |
References | () https://sec.cloudapps.cisco.com/security/center/content/CiscoSecurityAdvisory/cisco-sa-multicast-ERMrSvq7 - Vendor Advisory | |
CPE | cpe:2.3:o:cisco:ios_xr:24.2.1:*:*:*:*:*:*:* cpe:2.3:o:cisco:ios_xr:24.1.2:*:*:*:*:*:*:* cpe:2.3:o:cisco:ios_xr:7.11.1:*:*:*:*:*:*:* cpe:2.3:o:cisco:ios_xr:24.3.2:*:*:*:*:*:*:* cpe:2.3:h:cisco:asr_9902:-:*:*:*:*:*:*:* cpe:2.3:o:cisco:ios_xr:7.11.21:*:*:*:*:*:*:* cpe:2.3:o:cisco:ios_xr:7.9.21:*:*:*:*:*:*:* cpe:2.3:h:cisco:asr_9904:-:*:*:*:*:*:*:* cpe:2.3:o:cisco:ios_xr:7.11.2:*:*:*:*:*:*:* cpe:2.3:h:cisco:asr_9922:-:*:*:*:*:*:*:* cpe:2.3:h:cisco:asr_9910:-:*:*:*:*:*:*:* cpe:2.3:h:cisco:asr_9903:-:*:*:*:*:*:*:* cpe:2.3:o:cisco:ios_xr:24.2.2:*:*:*:*:*:*:* cpe:2.3:o:cisco:ios_xr:24.3.1:*:*:*:*:*:*:* cpe:2.3:h:cisco:asr_9906:-:*:*:*:*:*:*:* cpe:2.3:o:cisco:ios_xr:24.1.1:*:*:*:*:*:*:* cpe:2.3:o:cisco:ios_xr:7.10.2:*:*:*:*:*:*:* cpe:2.3:h:cisco:asr_9010:-:*:*:*:*:*:*:* cpe:2.3:h:cisco:asr_9901:-:*:*:*:*:*:*:* cpe:2.3:h:cisco:asr_9912:-:*:*:*:*:*:*:* cpe:2.3:h:cisco:asr_9006:-:*:*:*:*:*:*:* |
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Summary |
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CWE | NVD-CWE-noinfo | |
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 |
12 Mar 2025, 16:15
Type | Values Removed | Values Added |
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New CVE |
Information
Published : 2025-03-12 16:15
Updated : 2025-08-01 18:50
NVD link : CVE-2025-20146
Mitre link : CVE-2025-20146
CVE.ORG link : CVE-2025-20146
JSON object : View
Products Affected
cisco
- asr_9904
- asr_9903
- ios_xr
- asr_9910
- asr_9912
- asr_9901
- asr_9906
- asr_9010
- asr_9006
- asr_9922
- asr_9902
CWE