{
    "dataType": "CVE_RECORD",
    "dataVersion": "5.1",
    "cveMetadata": {
        "cveId": "CVE-2023-20187",
        "assignerOrgId": "d1c1063e-7a18-46af-9102-31f8928bc633",
        "state": "PUBLISHED",
        "assignerShortName": "cisco",
        "dateReserved": "2022-10-27T18:47:50.364Z",
        "datePublished": "2023-09-27T17:19:44.488Z",
        "dateUpdated": "2024-08-02T09:05:36.976Z"
    },
    "containers": {
        "cna": {
            "providerMetadata": {
                "orgId": "d1c1063e-7a18-46af-9102-31f8928bc633",
                "shortName": "cisco",
                "dateUpdated": "2024-01-25T16:57:52.741Z"
            },
            "descriptions": [
                {
                    "lang": "en",
                    "value": "A vulnerability in the Multicast Leaf Recycle Elimination (mLRE) feature of Cisco IOS XE Software for Cisco ASR 1000 Series Aggregation Services Routers could allow an unauthenticated, remote attacker to cause the affected device to reload, resulting in a denial of service (DoS) condition. \r\n\r This vulnerability is due to incorrect handling of certain IPv6 multicast packets when they are fanned out more than seven times on an affected device. An attacker could exploit this vulnerability by sending a specific IPv6 multicast or IPv6 multicast VPN (MVPNv6) packet through the affected device. A successful exploit could allow the attacker to cause a reload of the affected device, resulting in a DoS condition."
                }
            ],
            "affected": [
                {
                    "vendor": "Cisco",
                    "product": "Cisco IOS XE Software",
                    "versions": [
                        {
                            "version": "3.7.1S",
                            "status": "affected"
                        },
                        {
                            "version": "3.7.2S",
                            "status": "affected"
                        },
                        {
                            "version": "3.7.3S",
                            "status": "affected"
                        },
                        {
                            "version": "3.7.4S",
                            "status": "affected"
                        },
                        {
                            "version": "3.7.5S",
                            "status": "affected"
                        },
                        {
                            "version": "3.7.6S",
                            "status": "affected"
                        },
                        {
                            "version": "3.7.7S",
                            "status": "affected"
                        },
                        {
                            "version": "3.7.2tS",
                            "status": "affected"
                        },
                        {
                            "version": "3.8.0S",
                            "status": "affected"
                        },
                        {
                            "version": "3.8.1S",
                            "status": "affected"
                        },
                        {
                            "version": "3.8.2S",
                            "status": "affected"
                        },
                        {
                            "version": "3.9.1S",
                            "status": "affected"
                        },
                        {
                            "version": "3.9.0S",
                            "status": "affected"
                        },
                        {
                            "version": "3.9.2S",
                            "status": "affected"
                        },
                        {
                            "version": "3.10.0S",
                            "status": "affected"
                        },
                        {
                            "version": "3.10.1S",
                            "status": "affected"
                        },
                        {
                            "version": "3.10.2S",
                            "status": "affected"
                        },
                        {
                            "version": "3.10.3S",
                            "status": "affected"
                        },
                        {
                            "version": "3.10.4S",
                            "status": "affected"
                        },
                        {
                            "version": "3.10.5S",
                            "status": "affected"
                        },
                        {
                            "version": "3.10.6S",
                            "status": "affected"
                        },
                        {
                            "version": "3.10.7S",
                            "status": "affected"
                        },
                        {
                            "version": "3.10.1xbS",
                            "status": "affected"
                        },
                        {
                            "version": "3.10.8S",
                            "status": "affected"
                        },
                        {
                            "version": "3.10.8aS",
                            "status": "affected"
                        },
                        {
                            "version": "3.10.9S",
                            "status": "affected"
                        },
                        {
                            "version": "3.10.10S",
                            "status": "affected"
                        },
                        {
                            "version": "3.11.1S",
                            "status": "affected"
                        },
                        {
                            "version": "3.11.2S",
                            "status": "affected"
                        },
                        {
                            "version": "3.11.0S",
                            "status": "affected"
                        },
                        {
                            "version": "3.11.3S",
                            "status": "affected"
                        },
                        {
                            "version": "3.11.4S",
                            "status": "affected"
                        },
                        {
                            "version": "3.12.0S",
                            "status": "affected"
                        },
                        {
                            "version": "3.12.1S",
                            "status": "affected"
                        },
                        {
                            "version": "3.12.2S",
                            "status": "affected"
                        },
                        {
                            "version": "3.12.3S",
                            "status": "affected"
                        },
                        {
                            "version": "3.12.4S",
                            "status": "affected"
                        },
                        {
                            "version": "3.13.0S",
                            "status": "affected"
                        },
                        {
                            "version": "3.13.1S",
                            "status": "affected"
                        },
                        {
                            "version": "3.13.2S",
                            "status": "affected"
                        },
                        {
                            "version": "3.13.3S",
                            "status": "affected"
                        },
                        {
                            "version": "3.13.4S",
                            "status": "affected"
                        },
                        {
                            "version": "3.13.5S",
                            "status": "affected"
                        },
                        {
                            "version": "3.13.2aS",
                            "status": "affected"
                        },
                        {
                            "version": "3.13.5aS",
                            "status": "affected"
                        },
                        {
                            "version": "3.13.6S",
                            "status": "affected"
                        },
                        {
                            "version": "3.13.7S",
                            "status": "affected"
                        },
                        {
                            "version": "3.13.6aS",
                            "status": "affected"
                        },
                        {
                            "version": "3.13.8S",
                            "status": "affected"
                        },
                        {
                            "version": "3.13.9S",
                            "status": "affected"
                        },
                        {
                            "version": "3.13.10S",
                            "status": "affected"
                        },
                        {
                            "version": "3.14.0S",
                            "status": "affected"
                        },
                        {
                            "version": "3.14.1S",
                            "status": "affected"
                        },
                        {
                            "version": "3.14.2S",
                            "status": "affected"
                        },
                        {
                            "version": "3.14.3S",
                            "status": "affected"
                        },
                        {
                            "version": "3.14.4S",
                            "status": "affected"
                        },
                        {
                            "version": "3.15.0S",
                            "status": "affected"
                        },
                        {
                            "version": "3.15.1S",
                            "status": "affected"
                        },
                        {
                            "version": "3.15.2S",
                            "status": "affected"
                        },
                        {
                            "version": "3.15.3S",
                            "status": "affected"
                        },
                        {
                            "version": "3.15.4S",
                            "status": "affected"
                        },
                        {
                            "version": "3.16.0S",
                            "status": "affected"
                        },
                        {
                            "version": "3.16.1aS",
                            "status": "affected"
                        },
                        {
                            "version": "3.16.2S",
                            "status": "affected"
                        },
                        {
                            "version": "3.16.3S",
                            "status": "affected"
                        },
                        {
                            "version": "3.16.2bS",
                            "status": "affected"
                        },
                        {
                            "version": "3.16.4aS",
                            "status": "affected"
                        },
                        {
                            "version": "3.16.4bS",
                            "status": "affected"
                        },
                        {
                            "version": "3.16.5S",
                            "status": "affected"
                        },
                        {
                            "version": "3.16.6S",
                            "status": "affected"
                        },
                        {
                            "version": "3.16.7S",
                            "status": "affected"
                        },
                        {
                            "version": "3.16.6bS",
                            "status": "affected"
                        },
                        {
                            "version": "3.16.7aS",
                            "status": "affected"
                        },
                        {
                            "version": "3.16.7bS",
                            "status": "affected"
                        },
                        {
                            "version": "3.16.8S",
                            "status": "affected"
                        },
                        {
                            "version": "3.16.9S",
                            "status": "affected"
                        },
                        {
                            "version": "3.16.10S",
                            "status": "affected"
                        },
                        {
                            "version": "3.17.0S",
                            "status": "affected"
                        },
                        {
                            "version": "3.17.1S",
                            "status": "affected"
                        },
                        {
                            "version": "3.17.2S",
                            "status": "affected"
                        },
                        {
                            "version": "3.17.1aS",
                            "status": "affected"
                        },
                        {
                            "version": "3.17.3S",
                            "status": "affected"
                        },
                        {
                            "version": "3.17.4S",
                            "status": "affected"
                        },
                        {
                            "version": "16.2.1",
                            "status": "affected"
                        },
                        {
                            "version": "16.2.2",
                            "status": "affected"
                        },
                        {
                            "version": "16.3.1",
                            "status": "affected"
                        },
                        {
                            "version": "16.3.2",
                            "status": "affected"
                        },
                        {
                            "version": "16.3.3",
                            "status": "affected"
                        },
                        {
                            "version": "16.3.1a",
                            "status": "affected"
                        },
                        {
                            "version": "16.3.4",
                            "status": "affected"
                        },
                        {
                            "version": "16.3.5",
                            "status": "affected"
                        },
                        {
                            "version": "16.3.6",
                            "status": "affected"
                        },
                        {
                            "version": "16.3.7",
                            "status": "affected"
                        },
                        {
                            "version": "16.3.8",
                            "status": "affected"
                        },
                        {
                            "version": "16.3.9",
                            "status": "affected"
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                        {
                            "version": "16.3.10",
                            "status": "affected"
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                        {
                            "version": "16.3.11",
                            "status": "affected"
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                        {
                            "version": "16.4.1",
                            "status": "affected"
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                        {
                            "version": "16.4.2",
                            "status": "affected"
                        },
                        {
                            "version": "16.4.3",
                            "status": "affected"
                        },
                        {
                            "version": "16.5.1",
                            "status": "affected"
                        },
                        {
                            "version": "16.5.1b",
                            "status": "affected"
                        },
                        {
                            "version": "16.5.2",
                            "status": "affected"
                        },
                        {
                            "version": "16.5.3",
                            "status": "affected"
                        },
                        {
                            "version": "16.6.1",
                            "status": "affected"
                        },
                        {
                            "version": "16.6.2",
                            "status": "affected"
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                        {
                            "version": "16.6.3",
                            "status": "affected"
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                        {
                            "version": "16.6.4",
                            "status": "affected"
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                        {
                            "version": "16.6.5",
                            "status": "affected"
                        },
                        {
                            "version": "16.6.6",
                            "status": "affected"
                        },
                        {
                            "version": "16.6.7",
                            "status": "affected"
                        },
                        {
                            "version": "16.6.8",
                            "status": "affected"
                        },
                        {
                            "version": "16.6.9",
                            "status": "affected"
                        },
                        {
                            "version": "16.6.10",
                            "status": "affected"
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                        {
                            "version": "16.7.1",
                            "status": "affected"
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                        {
                            "version": "16.7.2",
                            "status": "affected"
                        },
                        {
                            "version": "16.7.3",
                            "status": "affected"
                        },
                        {
                            "version": "16.8.1",
                            "status": "affected"
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                        {
                            "version": "16.8.1s",
                            "status": "affected"
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                        {
                            "version": "16.8.2",
                            "status": "affected"
                        },
                        {
                            "version": "16.8.3",
                            "status": "affected"
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                            "version": "16.9.1",
                            "status": "affected"
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                        {
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                            "status": "affected"
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                        {
                            "version": "16.9.1s",
                            "status": "affected"
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                        {
                            "version": "16.9.3",
                            "status": "affected"
                        },
                        {
                            "version": "16.9.4",
                            "status": "affected"
                        },
                        {
                            "version": "16.9.5",
                            "status": "affected"
                        },
                        {
                            "version": "16.9.6",
                            "status": "affected"
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                        {
                            "version": "16.9.7",
                            "status": "affected"
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                        {
                            "version": "16.9.8",
                            "status": "affected"
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                            "status": "affected"
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                        {
                            "version": "16.10.1a",
                            "status": "affected"
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                        {
                            "version": "16.10.1s",
                            "status": "affected"
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                        {
                            "version": "16.10.1e",
                            "status": "affected"
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                        {
                            "version": "16.10.2",
                            "status": "affected"
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                        {
                            "version": "16.10.3",
                            "status": "affected"
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                        {
                            "version": "16.11.1",
                            "status": "affected"
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                        {
                            "version": "16.11.1a",
                            "status": "affected"
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                        {
                            "version": "16.11.2",
                            "status": "affected"
                        },
                        {
                            "version": "16.11.1s",
                            "status": "affected"
                        },
                        {
                            "version": "16.12.1",
                            "status": "affected"
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                        {
                            "version": "16.12.1s",
                            "status": "affected"
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                        {
                            "version": "16.12.1a",
                            "status": "affected"
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                        {
                            "version": "16.12.1c",
                            "status": "affected"
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                        {
                            "version": "16.12.2",
                            "status": "affected"
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                        {
                            "version": "16.12.3",
                            "status": "affected"
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                            "version": "16.12.8",
                            "status": "affected"
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                        {
                            "version": "16.12.2s",
                            "status": "affected"
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                        {
                            "version": "16.12.4",
                            "status": "affected"
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                        {
                            "version": "16.12.3s",
                            "status": "affected"
                        },
                        {
                            "version": "16.12.5",
                            "status": "affected"
                        },
                        {
                            "version": "16.12.6",
                            "status": "affected"
                        },
                        {
                            "version": "16.12.7",
                            "status": "affected"
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                        {
                            "version": "16.12.10a",
                            "status": "affected"
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                        {
                            "version": "17.1.1",
                            "status": "affected"
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                        {
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                            "status": "affected"
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                        {
                            "version": "17.1.1t",
                            "status": "affected"
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                            "version": "17.1.3",
                            "status": "affected"
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                        {
                            "version": "17.2.1",
                            "status": "affected"
                        },
                        {
                            "version": "17.2.1r",
                            "status": "affected"
                        },
                        {
                            "version": "17.2.1v",
                            "status": "affected"
                        },
                        {
                            "version": "17.2.2",
                            "status": "affected"
                        },
                        {
                            "version": "17.2.3",
                            "status": "affected"
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                        {
                            "version": "17.3.1",
                            "status": "affected"
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                        {
                            "version": "17.3.2",
                            "status": "affected"
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                        {
                            "version": "17.3.3",
                            "status": "affected"
                        },
                        {
                            "version": "17.3.1a",
                            "status": "affected"
                        },
                        {
                            "version": "17.3.4",
                            "status": "affected"
                        },
                        {
                            "version": "17.3.5",
                            "status": "affected"
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                        {
                            "version": "17.3.4a",
                            "status": "affected"
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                        {
                            "version": "17.3.6",
                            "status": "affected"
                        },
                        {
                            "version": "17.3.7",
                            "status": "affected"
                        },
                        {
                            "version": "17.4.1",
                            "status": "affected"
                        },
                        {
                            "version": "17.4.2",
                            "status": "affected"
                        },
                        {
                            "version": "17.4.1a",
                            "status": "affected"
                        },
                        {
                            "version": "17.4.1b",
                            "status": "affected"
                        },
                        {
                            "version": "17.5.1",
                            "status": "affected"
                        },
                        {
                            "version": "17.5.1a",
                            "status": "affected"
                        },
                        {
                            "version": "17.5.1b",
                            "status": "affected"
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                        {
                            "version": "17.5.1c",
                            "status": "affected"
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                            "version": "17.6.1",
                            "status": "affected"
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                            "status": "affected"
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                            "version": "17.6.1a",
                            "status": "affected"
                        },
                        {
                            "version": "17.6.3",
                            "status": "affected"
                        },
                        {
                            "version": "17.6.3a",
                            "status": "affected"
                        },
                        {
                            "version": "17.6.4",
                            "status": "affected"
                        },
                        {
                            "version": "17.6.5",
                            "status": "affected"
                        },
                        {
                            "version": "17.6.5a",
                            "status": "affected"
                        },
                        {
                            "version": "17.7.1",
                            "status": "affected"
                        },
                        {
                            "version": "17.7.1a",
                            "status": "affected"
                        },
                        {
                            "version": "17.7.2",
                            "status": "affected"
                        },
                        {
                            "version": "17.10.1",
                            "status": "affected"
                        },
                        {
                            "version": "17.10.1a",
                            "status": "affected"
                        },
                        {
                            "version": "17.8.1",
                            "status": "affected"
                        },
                        {
                            "version": "17.8.1a",
                            "status": "affected"
                        },
                        {
                            "version": "17.9.1",
                            "status": "affected"
                        },
                        {
                            "version": "17.9.2",
                            "status": "affected"
                        },
                        {
                            "version": "17.9.1a",
                            "status": "affected"
                        },
                        {
                            "version": "17.9.3",
                            "status": "affected"
                        },
                        {
                            "version": "17.9.2a",
                            "status": "affected"
                        },
                        {
                            "version": "17.9.3a",
                            "status": "affected"
                        },
                        {
                            "version": "17.11.1",
                            "status": "affected"
                        },
                        {
                            "version": "17.11.1a",
                            "status": "affected"
                        }
                    ]
                }
            ],
            "problemTypes": [
                {
                    "descriptions": [
                        {
                            "lang": "en",
                            "description": "Use of Out-of-range Pointer Offset",
                            "type": "cwe",
                            "cweId": "CWE-823"
                        }
                    ]
                }
            ],
            "references": [
                {
                    "url": "https://sec.cloudapps.cisco.com/security/center/content/CiscoSecurityAdvisory/cisco-sa-mlre-H93FswRz",
                    "name": "cisco-sa-mlre-H93FswRz"
                }
            ],
            "metrics": [
                {
                    "format": "cvssV3_1",
                    "cvssV3_1": {
                        "version": "3.1",
                        "vectorString": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:C/C:N/I:N/A:H",
                        "baseScore": 8.6,
                        "baseSeverity": "HIGH",
                        "attackVector": "NETWORK",
                        "attackComplexity": "LOW",
                        "privilegesRequired": "NONE",
                        "userInteraction": "NONE",
                        "scope": "CHANGED",
                        "confidentialityImpact": "NONE",
                        "integrityImpact": "NONE",
                        "availabilityImpact": "HIGH"
                    }
                }
            ],
            "exploits": [
                {
                    "lang": "en",
                    "value": "The Cisco Product Security Incident Response Team (PSIRT) is not aware of any public announcements or malicious use of the vulnerability that is described in this advisory."
                }
            ],
            "source": {
                "advisory": "cisco-sa-mlre-H93FswRz",
                "discovery": "EXTERNAL",
                "defects": [
                    "CSCwe91722"
                ]
            }
        },
        "adp": [
            {
                "providerMetadata": {
                    "orgId": "af854a3a-2127-422b-91ae-364da2661108",
                    "shortName": "CVE",
                    "dateUpdated": "2024-08-02T09:05:36.976Z"
                },
                "title": "CVE Program Container",
                "references": [
                    {
                        "url": "https://sec.cloudapps.cisco.com/security/center/content/CiscoSecurityAdvisory/cisco-sa-mlre-H93FswRz",
                        "name": "cisco-sa-mlre-H93FswRz",
                        "tags": [
                            "x_transferred"
                        ]
                    }
                ]
            }
        ]
    }
}