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Vulnerability Details :

CVE-2025-20146

Summary
Assigner-cisco
Assigner Org ID-d1c1063e-7a18-46af-9102-31f8928bc633
Published At-12 Mar, 2025 | 16:12
Updated At-21 Mar, 2025 | 20:27
Rejected At-
Credits

Cisco IOS XR Software for ASR 9000 Series Routers Layer 3 Multicast Routing Denial of Service Vulnerability

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.

Vendors
-
Not available
Products
-
Metrics (CVSS)
VersionBase scoreBase severityVector
Weaknesses
Attack Patterns
Solution/Workaround
References
HyperlinkResource Type
EPSS History
Score
Latest Score
-
N/A
No data available for selected date range
Percentile
Latest Percentile
-
N/A
No data available for selected date range
Stakeholder-Specific Vulnerability Categorization (SSVC)
▼Common Vulnerabilities and Exposures (CVE)
cve.org
Assigner:cisco
Assigner Org ID:d1c1063e-7a18-46af-9102-31f8928bc633
Published At:12 Mar, 2025 | 16:12
Updated At:21 Mar, 2025 | 20:27
Rejected At:
▼CVE Numbering Authority (CNA)
Cisco IOS XR Software for ASR 9000 Series Routers Layer 3 Multicast Routing Denial of Service Vulnerability

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.

Affected Products
Vendor
Cisco Systems, Inc.Cisco
Product
Cisco IOS XR Software
Default Status
unknown
Versions
Affected
  • 7.11.1
  • 7.9.21
  • 7.10.2
  • 24.1.1
  • 7.11.2
  • 24.2.1
  • 24.1.2
  • 24.3.1
  • 24.2.2
  • 7.11.21
  • 24.3.2
Problem Types
TypeCWE IDDescription
cweCWE-20Improper Input Validation
Type: cwe
CWE ID: CWE-20
Description: Improper Input Validation
Metrics
VersionBase scoreBase severityVector
3.18.6HIGH
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:C/C:N/I:N/A:H
Version: 3.1
Base score: 8.6
Base severity: HIGH
Vector:
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:C/C:N/I:N/A:H
Metrics Other Info
Impacts
CAPEC IDDescription
Solutions
Configurations
Workarounds
Exploits

The Cisco PSIRT is not aware of any public announcements or malicious use of the vulnerability that is described in this advisory.

Credits
Timeline
EventDate
Replaced By
Rejected Reason
References
HyperlinkResource
https://sec.cloudapps.cisco.com/security/center/content/CiscoSecurityAdvisory/cisco-sa-multicast-ERMrSvq7
N/A
https://blog.apnic.net/2024/09/02/crafting-endless-as-paths-in-bgp/
N/A
Hyperlink: https://sec.cloudapps.cisco.com/security/center/content/CiscoSecurityAdvisory/cisco-sa-multicast-ERMrSvq7
Resource: N/A
Hyperlink: https://blog.apnic.net/2024/09/02/crafting-endless-as-paths-in-bgp/
Resource: N/A
▼Authorized Data Publishers (ADP)
CISA ADP Vulnrichment
Affected Products
Metrics
VersionBase scoreBase severityVector
Metrics Other Info
Impacts
CAPEC IDDescription
Solutions
Configurations
Workarounds
Exploits
Credits
Timeline
EventDate
Replaced By
Rejected Reason
References
HyperlinkResource
Information is not available yet
▼National Vulnerability Database (NVD)
nvd.nist.gov
Source:psirt@cisco.com
Published At:12 Mar, 2025 | 16:15
Updated At:01 Aug, 2025 | 18:50

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.

CISA Catalog
Date AddedDue DateVulnerability NameRequired Action
N/A
Date Added: N/A
Due Date: N/A
Vulnerability Name: N/A
Required Action: N/A
Metrics
TypeVersionBase scoreBase severityVector
Primary3.18.6HIGH
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:C/C:N/I:N/A:H
Type: Primary
Version: 3.1
Base score: 8.6
Base severity: HIGH
Vector:
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:C/C:N/I:N/A:H
CPE Matches
Cisco Systems, Inc.
cisco
>>ios_xr>>7.9.21
cpe:2.3:o:cisco:ios_xr:7.9.21:*:*:*:*:*:*:*
Cisco Systems, Inc.
cisco
>>ios_xr>>7.10.2
cpe:2.3:o:cisco:ios_xr:7.10.2:*:*:*:*:*:*:*
Cisco Systems, Inc.
cisco
>>ios_xr>>7.11.1
cpe:2.3:o:cisco:ios_xr:7.11.1:*:*:*:*:*:*:*
Cisco Systems, Inc.
cisco
>>ios_xr>>7.11.2
cpe:2.3:o:cisco:ios_xr:7.11.2:*:*:*:*:*:*:*
Cisco Systems, Inc.
cisco
>>ios_xr>>7.11.21
cpe:2.3:o:cisco:ios_xr:7.11.21:*:*:*:*:*:*:*
Cisco Systems, Inc.
cisco
>>ios_xr>>24.1.1
cpe:2.3:o:cisco:ios_xr:24.1.1:*:*:*:*:*:*:*
Cisco Systems, Inc.
cisco
>>ios_xr>>24.1.2
cpe:2.3:o:cisco:ios_xr:24.1.2:*:*:*:*:*:*:*
Cisco Systems, Inc.
cisco
>>ios_xr>>24.2.1
cpe:2.3:o:cisco:ios_xr:24.2.1:*:*:*:*:*:*:*
Cisco Systems, Inc.
cisco
>>ios_xr>>24.2.2
cpe:2.3:o:cisco:ios_xr:24.2.2:*:*:*:*:*:*:*
Cisco Systems, Inc.
cisco
>>ios_xr>>24.3.1
cpe:2.3:o:cisco:ios_xr:24.3.1:*:*:*:*:*:*:*
Cisco Systems, Inc.
cisco
>>ios_xr>>24.3.2
cpe:2.3:o:cisco:ios_xr:24.3.2:*:*:*:*:*:*:*
Cisco Systems, Inc.
cisco
>>asr_9006>>-
cpe:2.3:h:cisco:asr_9006:-:*:*:*:*:*:*:*
Cisco Systems, Inc.
cisco
>>asr_9010>>-
cpe:2.3:h:cisco:asr_9010:-:*:*:*:*:*:*:*
Cisco Systems, Inc.
cisco
>>asr_9901>>-
cpe:2.3:h:cisco:asr_9901:-:*:*:*:*:*:*:*
Cisco Systems, Inc.
cisco
>>asr_9902>>-
cpe:2.3:h:cisco:asr_9902:-:*:*:*:*:*:*:*
Cisco Systems, Inc.
cisco
>>asr_9903>>-
cpe:2.3:h:cisco:asr_9903:-:*:*:*:*:*:*:*
Cisco Systems, Inc.
cisco
>>asr_9904>>-
cpe:2.3:h:cisco:asr_9904:-:*:*:*:*:*:*:*
Cisco Systems, Inc.
cisco
>>asr_9906>>-
cpe:2.3:h:cisco:asr_9906:-:*:*:*:*:*:*:*
Cisco Systems, Inc.
cisco
>>asr_9910>>-
cpe:2.3:h:cisco:asr_9910:-:*:*:*:*:*:*:*
Cisco Systems, Inc.
cisco
>>asr_9912>>-
cpe:2.3:h:cisco:asr_9912:-:*:*:*:*:*:*:*
Cisco Systems, Inc.
cisco
>>asr_9922>>-
cpe:2.3:h:cisco:asr_9922:-:*:*:*:*:*:*:*
Weaknesses
CWE IDTypeSource
CWE-20Primarypsirt@cisco.com
NVD-CWE-noinfoPrimarynvd@nist.gov
CWE ID: CWE-20
Type: Primary
Source: psirt@cisco.com
CWE ID: NVD-CWE-noinfo
Type: Primary
Source: nvd@nist.gov
Evaluator Description
Evaluator Impact

Evaluator Solution

Vendor Statements
References
HyperlinkSourceResource
https://blog.apnic.net/2024/09/02/crafting-endless-as-paths-in-bgp/psirt@cisco.com
Not Applicable
https://sec.cloudapps.cisco.com/security/center/content/CiscoSecurityAdvisory/cisco-sa-multicast-ERMrSvq7psirt@cisco.com
Vendor Advisory
Hyperlink: https://blog.apnic.net/2024/09/02/crafting-endless-as-paths-in-bgp/
Source: psirt@cisco.com
Resource:
Not Applicable
Hyperlink: https://sec.cloudapps.cisco.com/security/center/content/CiscoSecurityAdvisory/cisco-sa-multicast-ERMrSvq7
Source: psirt@cisco.com
Resource:
Vendor Advisory

Change History

0
Information is not available yet

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