{
    "dataType": "CVE_RECORD",
    "dataVersion": "5.1",
    "cveMetadata": {
        "cveId": "CVE-2023-20236",
        "assignerOrgId": "d1c1063e-7a18-46af-9102-31f8928bc633",
        "state": "PUBLISHED",
        "assignerShortName": "cisco",
        "dateReserved": "2022-10-27T18:47:50.370Z",
        "datePublished": "2023-09-13T16:39:19.418Z",
        "dateUpdated": "2024-10-23T19:10:48.388Z"
    },
    "containers": {
        "cna": {
            "providerMetadata": {
                "orgId": "d1c1063e-7a18-46af-9102-31f8928bc633",
                "shortName": "cisco",
                "dateUpdated": "2024-08-07T19:50:10.951Z"
            },
            "descriptions": [
                {
                    "lang": "en",
                    "value": "A vulnerability in the iPXE boot function of Cisco IOS XR software could allow an authenticated, local attacker to install an unverified software image on an affected device.\r\n\r This vulnerability is due to insufficient image verification. An attacker could exploit this vulnerability by manipulating the boot parameters for image verification during the iPXE boot process on an affected device. A successful exploit could allow the attacker to boot an unverified software image on the 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": "5.2.47",
                            "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": "6.0.0",
                            "status": "affected"
                        },
                        {
                            "version": "6.0.1",
                            "status": "affected"
                        },
                        {
                            "version": "6.0.2",
                            "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": "6.1.12",
                            "status": "affected"
                        },
                        {
                            "version": "6.1.22",
                            "status": "affected"
                        },
                        {
                            "version": "6.1.32",
                            "status": "affected"
                        },
                        {
                            "version": "6.1.36",
                            "status": "affected"
                        },
                        {
                            "version": "6.1.42",
                            "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": "6.2.11",
                            "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": "6.5.3",
                            "status": "affected"
                        },
                        {
                            "version": "6.5.25",
                            "status": "affected"
                        },
                        {
                            "version": "6.5.26",
                            "status": "affected"
                        },
                        {
                            "version": "6.5.28",
                            "status": "affected"
                        },
                        {
                            "version": "6.5.29",
                            "status": "affected"
                        },
                        {
                            "version": "6.5.32",
                            "status": "affected"
                        },
                        {
                            "version": "6.5.33",
                            "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": "7.0.12",
                            "status": "affected"
                        },
                        {
                            "version": "7.0.14",
                            "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": "7.2.0",
                            "status": "affected"
                        },
                        {
                            "version": "7.2.1",
                            "status": "affected"
                        },
                        {
                            "version": "7.2.2",
                            "status": "affected"
                        },
                        {
                            "version": "7.3.1",
                            "status": "affected"
                        },
                        {
                            "version": "7.3.15",
                            "status": "affected"
                        },
                        {
                            "version": "7.3.2",
                            "status": "affected"
                        },
                        {
                            "version": "7.3.3",
                            "status": "affected"
                        },
                        {
                            "version": "7.3.5",
                            "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": "7.5.4",
                            "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": "7.7.21",
                            "status": "affected"
                        },
                        {
                            "version": "6.9.1",
                            "status": "affected"
                        },
                        {
                            "version": "6.9.2",
                            "status": "affected"
                        },
                        {
                            "version": "7.8.1",
                            "status": "affected"
                        },
                        {
                            "version": "7.8.2",
                            "status": "affected"
                        },
                        {
                            "version": "7.9.1",
                            "status": "affected"
                        },
                        {
                            "version": "7.9.2",
                            "status": "affected"
                        }
                    ]
                }
            ],
            "problemTypes": [
                {
                    "descriptions": [
                        {
                            "lang": "en",
                            "description": "Improper Verification of Cryptographic Signature",
                            "type": "cwe",
                            "cweId": "CWE-347"
                        }
                    ]
                }
            ],
            "references": [
                {
                    "url": "https://sec.cloudapps.cisco.com/security/center/content/CiscoSecurityAdvisory/cisco-sa-iosxr-ipxe-sigbypass-pymfyqgB",
                    "name": "cisco-sa-iosxr-ipxe-sigbypass-pymfyqgB"
                }
            ],
            "metrics": [
                {
                    "format": "cvssV3_1",
                    "cvssV3_1": {
                        "version": "3.1",
                        "vectorString": "CVSS:3.1/AV:L/AC:L/PR:H/UI:N/S:U/C:H/I:H/A:H",
                        "baseScore": 6.7,
                        "baseSeverity": "MEDIUM",
                        "attackVector": "LOCAL",
                        "attackComplexity": "LOW",
                        "privilegesRequired": "HIGH",
                        "userInteraction": "NONE",
                        "scope": "UNCHANGED",
                        "confidentialityImpact": "HIGH",
                        "integrityImpact": "HIGH",
                        "availabilityImpact": "HIGH"
                    }
                }
            ],
            "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-iosxr-ipxe-sigbypass-pymfyqgB",
                "discovery": "INTERNAL",
                "defects": [
                    "CSCvz63925",
                    "CSCvz63918",
                    "CSCwe12502",
                    "CSCvz63929",
                    "CSCwi31568",
                    "CSCwh78724",
                    "CSCwi26526",
                    "CSCwh70601",
                    "CSCwh78727",
                    "CSCwj83430",
                    "CSCwj88475"
                ]
            }
        },
        "adp": [
            {
                "providerMetadata": {
                    "orgId": "af854a3a-2127-422b-91ae-364da2661108",
                    "shortName": "CVE",
                    "dateUpdated": "2024-08-02T09:05:35.905Z"
                },
                "title": "CVE Program Container",
                "references": [
                    {
                        "url": "https://sec.cloudapps.cisco.com/security/center/content/CiscoSecurityAdvisory/cisco-sa-iosxr-ipxe-sigbypass-pymfyqgB",
                        "name": "cisco-sa-iosxr-ipxe-sigbypass-pymfyqgB",
                        "tags": [
                            "x_transferred"
                        ]
                    }
                ]
            },
            {
                "affected": [
                    {
                        "vendor": "cisco",
                        "product": "ios_xr_software",
                        "cpes": [
                            "cpe:2.3:o:cisco:ios_xr_software:*:*:*:*:*:*:*:*"
                        ],
                        "defaultStatus": "unknown",
                        "versions": [
                            {
                                "version": "0",
                                "status": "affected",
                                "lessThanOrEqual": "7.9.2",
                                "versionType": "custom"
                            }
                        ]
                    }
                ],
                "metrics": [
                    {
                        "other": {
                            "type": "ssvc",
                            "content": {
                                "timestamp": "2023-11-15T16:36:16.200980Z",
                                "id": "CVE-2023-20236",
                                "options": [
                                    {
                                        "Exploitation": "None"
                                    },
                                    {
                                        "Automatable": "No"
                                    },
                                    {
                                        "Technical Impact": "Total"
                                    }
                                ],
                                "role": "CISA Coordinator",
                                "version": "2.0.3"
                            }
                        }
                    }
                ],
                "title": "CISA ADP Vulnrichment",
                "providerMetadata": {
                    "orgId": "134c704f-9b21-4f2e-91b3-4a467353bcc0",
                    "shortName": "CISA-ADP",
                    "dateUpdated": "2024-10-23T19:10:48.388Z"
                }
            }
        ]
    }
}