{
    "dataType": "CVE_RECORD",
    "dataVersion": "5.1",
    "cveMetadata": {
        "cveId": "CVE-2023-20233",
        "assignerOrgId": "d1c1063e-7a18-46af-9102-31f8928bc633",
        "state": "PUBLISHED",
        "assignerShortName": "cisco",
        "dateReserved": "2022-10-27T18:47:50.369Z",
        "datePublished": "2023-09-13T16:40:15.314Z",
        "dateUpdated": "2024-08-02T09:05:36.620Z"
    },
    "containers": {
        "cna": {
            "providerMetadata": {
                "orgId": "d1c1063e-7a18-46af-9102-31f8928bc633",
                "shortName": "cisco",
                "dateUpdated": "2024-01-25T16:58:27.181Z"
            },
            "descriptions": [
                {
                    "lang": "en",
                    "value": "A vulnerability in the Connectivity Fault Management (CFM) feature of Cisco IOS XR Software could allow an unauthenticated, remote attacker to cause a denial of service (DoS) condition on an affected device.\r\n\r This vulnerability is due to incorrect processing of invalid continuity check messages (CCMs). An attacker could exploit this vulnerability by sending crafted CCMs to an affected device. A successful exploit could allow the attacker to cause the CFM service to crash when a user displays information about maintenance end points (MEPs) for peer MEPs on an affected device."
                }
            ],
            "affected": [
                {
                    "vendor": "Cisco",
                    "product": "Cisco IOS XR Software",
                    "versions": [
                        {
                            "version": "5.2.0",
                            "status": "affected"
                        },
                        {
                            "version": "5.2.1",
                            "status": "affected"
                        },
                        {
                            "version": "5.2.2",
                            "status": "affected"
                        },
                        {
                            "version": "5.2.4",
                            "status": "affected"
                        },
                        {
                            "version": "5.2.3",
                            "status": "affected"
                        },
                        {
                            "version": "5.2.5",
                            "status": "affected"
                        },
                        {
                            "version": "5.3.0",
                            "status": "affected"
                        },
                        {
                            "version": "5.3.1",
                            "status": "affected"
                        },
                        {
                            "version": "5.3.2",
                            "status": "affected"
                        },
                        {
                            "version": "5.3.3",
                            "status": "affected"
                        },
                        {
                            "version": "5.3.4",
                            "status": "affected"
                        },
                        {
                            "version": "6.1.1",
                            "status": "affected"
                        },
                        {
                            "version": "6.1.2",
                            "status": "affected"
                        },
                        {
                            "version": "6.1.3",
                            "status": "affected"
                        },
                        {
                            "version": "6.1.4",
                            "status": "affected"
                        },
                        {
                            "version": "6.2.1",
                            "status": "affected"
                        },
                        {
                            "version": "6.2.2",
                            "status": "affected"
                        },
                        {
                            "version": "6.2.3",
                            "status": "affected"
                        },
                        {
                            "version": "6.2.25",
                            "status": "affected"
                        },
                        {
                            "version": "6.3.2",
                            "status": "affected"
                        },
                        {
                            "version": "6.3.3",
                            "status": "affected"
                        },
                        {
                            "version": "6.3.15",
                            "status": "affected"
                        },
                        {
                            "version": "6.4.1",
                            "status": "affected"
                        },
                        {
                            "version": "6.4.2",
                            "status": "affected"
                        },
                        {
                            "version": "6.4.3",
                            "status": "affected"
                        },
                        {
                            "version": "6.5.1",
                            "status": "affected"
                        },
                        {
                            "version": "6.5.2",
                            "status": "affected"
                        },
                        {
                            "version": "6.6.2",
                            "status": "affected"
                        },
                        {
                            "version": "6.6.3",
                            "status": "affected"
                        },
                        {
                            "version": "6.6.25",
                            "status": "affected"
                        },
                        {
                            "version": "6.6.4",
                            "status": "affected"
                        },
                        {
                            "version": "7.0.1",
                            "status": "affected"
                        },
                        {
                            "version": "7.0.2",
                            "status": "affected"
                        },
                        {
                            "version": "7.1.1",
                            "status": "affected"
                        },
                        {
                            "version": "7.1.15",
                            "status": "affected"
                        },
                        {
                            "version": "7.1.2",
                            "status": "affected"
                        },
                        {
                            "version": "7.1.3",
                            "status": "affected"
                        },
                        {
                            "version": "6.7.1",
                            "status": "affected"
                        },
                        {
                            "version": "6.7.2",
                            "status": "affected"
                        },
                        {
                            "version": "6.7.3",
                            "status": "affected"
                        },
                        {
                            "version": "6.7.4",
                            "status": "affected"
                        },
                        {
                            "version": "7.2.1",
                            "status": "affected"
                        },
                        {
                            "version": "7.2.2",
                            "status": "affected"
                        },
                        {
                            "version": "7.3.1",
                            "status": "affected"
                        },
                        {
                            "version": "7.3.2",
                            "status": "affected"
                        },
                        {
                            "version": "7.3.3",
                            "status": "affected"
                        },
                        {
                            "version": "7.4.1",
                            "status": "affected"
                        },
                        {
                            "version": "7.4.2",
                            "status": "affected"
                        },
                        {
                            "version": "6.8.1",
                            "status": "affected"
                        },
                        {
                            "version": "6.8.2",
                            "status": "affected"
                        },
                        {
                            "version": "7.5.1",
                            "status": "affected"
                        },
                        {
                            "version": "7.5.3",
                            "status": "affected"
                        },
                        {
                            "version": "7.5.2",
                            "status": "affected"
                        },
                        {
                            "version": "7.6.1",
                            "status": "affected"
                        },
                        {
                            "version": "7.6.2",
                            "status": "affected"
                        },
                        {
                            "version": "7.7.1",
                            "status": "affected"
                        },
                        {
                            "version": "7.7.2",
                            "status": "affected"
                        },
                        {
                            "version": "6.9.1",
                            "status": "affected"
                        },
                        {
                            "version": "6.9.2",
                            "status": "affected"
                        }
                    ]
                }
            ],
            "problemTypes": [
                {
                    "descriptions": [
                        {
                            "lang": "en",
                            "description": "NULL Pointer Dereference",
                            "type": "cwe",
                            "cweId": "CWE-476"
                        }
                    ]
                }
            ],
            "references": [
                {
                    "url": "https://sec.cloudapps.cisco.com/security/center/content/CiscoSecurityAdvisory/cisco-sa-ios-xr-cfm-3pWN8MKt",
                    "name": "cisco-sa-ios-xr-cfm-3pWN8MKt"
                }
            ],
            "metrics": [
                {
                    "format": "cvssV3_1",
                    "cvssV3_1": {
                        "version": "3.1",
                        "vectorString": "CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:N/I:N/A:L",
                        "baseScore": 4.3,
                        "baseSeverity": "MEDIUM",
                        "attackVector": "NETWORK",
                        "attackComplexity": "LOW",
                        "privilegesRequired": "NONE",
                        "userInteraction": "REQUIRED",
                        "scope": "UNCHANGED",
                        "confidentialityImpact": "NONE",
                        "integrityImpact": "NONE",
                        "availabilityImpact": "LOW"
                    }
                }
            ],
            "exploits": [
                {
                    "lang": "en",
                    "value": "The Cisco PSIRT is not aware of any public announcements or malicious use of the vulnerability that is described in this advisory."
                }
            ],
            "source": {
                "advisory": "cisco-sa-ios-xr-cfm-3pWN8MKt",
                "discovery": "INTERNAL",
                "defects": [
                    "CSCwd75868"
                ]
            }
        },
        "adp": [
            {
                "providerMetadata": {
                    "orgId": "af854a3a-2127-422b-91ae-364da2661108",
                    "shortName": "CVE",
                    "dateUpdated": "2024-08-02T09:05:36.620Z"
                },
                "title": "CVE Program Container",
                "references": [
                    {
                        "url": "https://sec.cloudapps.cisco.com/security/center/content/CiscoSecurityAdvisory/cisco-sa-ios-xr-cfm-3pWN8MKt",
                        "name": "cisco-sa-ios-xr-cfm-3pWN8MKt",
                        "tags": [
                            "x_transferred"
                        ]
                    }
                ]
            }
        ]
    }
}