github - ghsa-w9ff-5p26-w67v

GHSA-W9FF-5P26-W67V

Vulnerability from github – Published: 2025-03-12 18:32 – Updated: 2025-03-12 18:32

Details

This vulnerability is due to the incorrect handling of malformed IPv4 packets that are received on line cards where the interface has either an IPv4 ACL or QoS policy applied. An attacker could exploit this vulnerability by sending crafted IPv4 packets through an affected device. A successful exploit could allow the attacker to cause network processor errors, resulting in a reset or shutdown of the network process. Traffic over that line card would be lost while the line card reloads. Note: This vulnerability has predominantly been observed in Layer 2 VPN (L2VPN) environments where an IPv4 ACL or QoS policy has been applied to the bridge virtual interface. Layer 3 configurations where the interface has either an IPv4 ACL or QoS policy applied are also affected, though the vulnerability has not been observed.

Severity ?

8.6 (High)


                  
                    CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:C/C:N/I:N/A:H

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{
  "affected": [],
  "aliases": [
    "CVE-2025-20142"
  ],
  "database_specific": {
    "cwe_ids": [
      "CWE-20"
    ],
    "github_reviewed": false,
    "github_reviewed_at": null,
    "nvd_published_at": "2025-03-12T16:15:21Z",
    "severity": "HIGH"
  },
  "details": "A vulnerability in the IPv4 access control list (ACL) feature and quality of service (QoS) policy 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.\n\nThis vulnerability is due to the incorrect handling of malformed IPv4 packets that are received on line cards where the interface has either an IPv4 ACL or QoS policy applied. An attacker could exploit this vulnerability by sending crafted IPv4 packets through an affected device. A successful exploit could allow the attacker to cause network processor errors, resulting in a reset or shutdown of the network process. Traffic over that line card would be lost while the line card reloads.\nNote: This vulnerability has predominantly been observed in Layer 2 VPN (L2VPN) environments where an IPv4 ACL or QoS policy has been applied to the bridge virtual interface. Layer 3 configurations where the interface has either an IPv4 ACL or QoS policy applied are also affected, though the vulnerability has not been observed.",
  "id": "GHSA-w9ff-5p26-w67v",
  "modified": "2025-03-12T18:32:52Z",
  "published": "2025-03-12T18:32:52Z",
  "references": [
    {
      "type": "ADVISORY",
      "url": "https://nvd.nist.gov/vuln/detail/CVE-2025-20142"
    },
    {
      "type": "WEB",
      "url": "https://blog.apnic.net/2024/09/02/crafting-endless-as-paths-in-bgp"
    },
    {
      "type": "WEB",
      "url": "https://sec.cloudapps.cisco.com/security/center/content/CiscoSecurityAdvisory/cisco-sa-ipv4uni-LfM3cfBu"
    }
  ],
  "schema_version": "1.4.0",
  "severity": [
    {
      "score": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:C/C:N/I:N/A:H",
      "type": "CVSS_V3"
    }
  ]
}

CVE-2025-20142 (GCVE-0-2025-20142)

Vulnerability from cvelistv5 – Published: 2025-03-12 16:12 – Updated: 2025-03-21 20:34

Title

Cisco IOS XR Software for ASR 9000 Series Routers L2VPN Denial of Service Vulnerability

Summary

A vulnerability in the IPv4 access control list (ACL) feature and quality of service (QoS) policy 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 packets that are received on line cards where the interface has either an IPv4 ACL or QoS policy applied. An attacker could exploit this vulnerability by sending crafted IPv4 packets through an affected device. A successful exploit could allow the attacker to cause network processor errors, resulting in a reset or shutdown of the network process. Traffic over that line card would be lost while the line card reloads. Note: This vulnerability has predominantly been observed in Layer 2 VPN (L2VPN) environments where an IPv4 ACL or QoS policy has been applied to the bridge virtual interface. Layer 3 configurations where the interface has either an IPv4 ACL or QoS policy applied are also affected, though the vulnerability has not been observed.

Severity ?

8.6 (High)


                        
                          CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:C/C:N/I:N/A:H

CWE

CWE-20 - Improper Input Validation

Assigner

cisco

References

URL

Tags

	https://sec.cloudapps.cisco.com/security/center/c…
	https://blog.apnic.net/2024/09/02/crafting-endles…

Impacted products

	Vendor	Product	Version
	Cisco	Cisco IOS XR Software	Affected: 7.1.15 Affected: 7.1.2 Affected: 6.7.2 Affected: 7.1.25 Affected: 7.1.3 Affected: 6.7.3 Affected: 7.3.1 Affected: 7.4.1 Affected: 6.8.1 Affected: 7.3.2 Affected: 7.5.1 Affected: 7.6.1 Affected: 7.5.2 Affected: 7.3.3 Affected: 6.8.2 Affected: 7.7.1 Affected: 7.4.2 Affected: 7.3.4 Affected: 6.7.35 Affected: 6.9.1 Affected: 7.6.2 Affected: 7.8.1 Affected: 7.5.3 Affected: 7.7.2 Affected: 6.9.2 Affected: 7.9.1 Affected: 7.8.2 Affected: 7.5.4 Affected: 7.8.22 Affected: 7.10.1 Affected: 7.9.2 Affected: 7.3.5 Affected: 7.5.5 Affected: 7.8.23

Show details on NVD website

JSON

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        "metrics": [
          {
            "other": {
              "content": {
                "id": "CVE-2025-20142",
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                  {
                    "Exploitation": "none"
                  },
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                    "Automatable": "no"
                  },
                  {
                    "Technical Impact": "partial"
                  }
                ],
                "role": "CISA Coordinator",
                "timestamp": "2025-03-21T20:34:14.309604Z",
                "version": "2.0.3"
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        "providerMetadata": {
          "dateUpdated": "2025-03-21T20:34:33.919Z",
          "orgId": "134c704f-9b21-4f2e-91b3-4a467353bcc0",
          "shortName": "CISA-ADP"
        },
        "title": "CISA ADP Vulnrichment"
      }
    ],
    "cna": {
      "affected": [
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          "versions": [
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              "status": "affected",
              "version": "7.1.15"
            },
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              "status": "affected",
              "version": "7.1.2"
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            {
              "status": "affected",
              "version": "6.7.2"
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              "status": "affected",
              "version": "7.1.25"
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            {
              "status": "affected",
              "version": "7.1.3"
            },
            {
              "status": "affected",
              "version": "6.7.3"
            },
            {
              "status": "affected",
              "version": "7.3.1"
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              "status": "affected",
              "version": "7.4.1"
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            {
              "status": "affected",
              "version": "6.8.1"
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            {
              "status": "affected",
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              "status": "affected",
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              "version": "6.8.2"
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              "status": "affected",
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              "status": "affected",
              "version": "7.3.4"
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            {
              "status": "affected",
              "version": "6.7.35"
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              "status": "affected",
              "version": "6.9.1"
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            {
              "status": "affected",
              "version": "7.6.2"
            },
            {
              "status": "affected",
              "version": "7.8.1"
            },
            {
              "status": "affected",
              "version": "7.5.3"
            },
            {
              "status": "affected",
              "version": "7.7.2"
            },
            {
              "status": "affected",
              "version": "6.9.2"
            },
            {
              "status": "affected",
              "version": "7.9.1"
            },
            {
              "status": "affected",
              "version": "7.8.2"
            },
            {
              "status": "affected",
              "version": "7.5.4"
            },
            {
              "status": "affected",
              "version": "7.8.22"
            },
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              "status": "affected",
              "version": "7.10.1"
            },
            {
              "status": "affected",
              "version": "7.9.2"
            },
            {
              "status": "affected",
              "version": "7.3.5"
            },
            {
              "status": "affected",
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              "status": "affected",
              "version": "7.8.23"
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        }
      ],
      "exploits": [
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            "attackComplexity": "LOW",
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            "confidentialityImpact": "NONE",
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            "privilegesRequired": "NONE",
            "scope": "CHANGED",
            "userInteraction": "NONE",
            "vectorString": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:C/C:N/I:N/A:H",
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      "providerMetadata": {
        "dateUpdated": "2025-03-12T16:12:23.126Z",
        "orgId": "d1c1063e-7a18-46af-9102-31f8928bc633",
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      },
      "references": [
        {
          "name": "cisco-sa-ipv4uni-LfM3cfBu",
          "url": "https://sec.cloudapps.cisco.com/security/center/content/CiscoSecurityAdvisory/cisco-sa-ipv4uni-LfM3cfBu"
        },
        {
          "name": "Crafting endless AS-PATHS in BGP",
          "url": "https://blog.apnic.net/2024/09/02/crafting-endless-as-paths-in-bgp/"
        }
      ],
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    "state": "PUBLISHED"
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Sightings

Author	Source	Type	Date

Nomenclature

Seen: The vulnerability was mentioned, discussed, or observed by the user.
Confirmed: The vulnerability has been validated from an analyst's perspective.
Published Proof of Concept: A public proof of concept is available for this vulnerability.
Exploited: The vulnerability was observed as exploited by the user who reported the sighting.
Patched: The vulnerability was observed as successfully patched by the user who reported the sighting.
Not exploited: The vulnerability was not observed as exploited by the user who reported the sighting.
Not confirmed: The user expressed doubt about the validity of the vulnerability.
Not patched: The vulnerability was not observed as successfully patched by the user who reported the sighting.

Detection rules are retrieved from Rulezet.

Action not permitted

GHSA-W9FF-5P26-W67V

CVE-2025-20142 (GCVE-0-2025-20142)

Tags

Sightings

Nomenclature