{
    "dataType": "CVE_RECORD",
    "dataVersion": "5.1",
    "cveMetadata": {
        "cveId": "CVE-2023-39953",
        "assignerOrgId": "a0819718-46f1-4df5-94e2-005712e83aaa",
        "state": "PUBLISHED",
        "assignerShortName": "GitHub_M",
        "dateReserved": "2023-08-07T16:27:27.075Z",
        "datePublished": "2023-08-10T13:55:19.957Z",
        "dateUpdated": "2024-10-03T15:11:48.536Z"
    },
    "containers": {
        "cna": {
            "title": "Issuer not verified from obtained token in user_oidc",
            "problemTypes": [
                {
                    "descriptions": [
                        {
                            "cweId": "CWE-303",
                            "lang": "en",
                            "description": "CWE-303: Incorrect Implementation of Authentication Algorithm",
                            "type": "CWE"
                        }
                    ]
                }
            ],
            "metrics": [
                {
                    "cvssV3_1": {
                        "attackComplexity": "HIGH",
                        "attackVector": "NETWORK",
                        "availabilityImpact": "NONE",
                        "baseScore": 4.8,
                        "baseSeverity": "MEDIUM",
                        "confidentialityImpact": "LOW",
                        "integrityImpact": "LOW",
                        "privilegesRequired": "NONE",
                        "scope": "UNCHANGED",
                        "userInteraction": "NONE",
                        "vectorString": "CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:L/I:L/A:N",
                        "version": "3.1"
                    }
                }
            ],
            "references": [
                {
                    "name": "https://github.com/nextcloud/security-advisories/security/advisories/GHSA-xx3h-v363-q36j",
                    "tags": [
                        "x_refsource_CONFIRM"
                    ],
                    "url": "https://github.com/nextcloud/security-advisories/security/advisories/GHSA-xx3h-v363-q36j"
                },
                {
                    "name": "https://github.com/nextcloud/user_oidc/pull/642",
                    "tags": [
                        "x_refsource_MISC"
                    ],
                    "url": "https://github.com/nextcloud/user_oidc/pull/642"
                },
                {
                    "name": "https://hackerone.com/reports/2021684",
                    "tags": [
                        "x_refsource_MISC"
                    ],
                    "url": "https://hackerone.com/reports/2021684"
                }
            ],
            "affected": [
                {
                    "vendor": "nextcloud",
                    "product": "security-advisories",
                    "versions": [
                        {
                            "version": ">= 1.0.0, < 1.3.3",
                            "status": "affected"
                        }
                    ]
                }
            ],
            "providerMetadata": {
                "orgId": "a0819718-46f1-4df5-94e2-005712e83aaa",
                "shortName": "GitHub_M",
                "dateUpdated": "2023-08-10T13:55:19.957Z"
            },
            "descriptions": [
                {
                    "lang": "en",
                    "value": "user_oidc provides the OIDC connect user backend for Nextcloud, an open-source cloud platform. Starting in version 1.0.0 and prior to version 1.3.3, missing verification of the issuer would have allowed an attacker to perform a man-in-the-middle attack returning corrupted or known token they also have access to. user_oidc 1.3.3 contains a patch. No known workarounds are available."
                }
            ],
            "source": {
                "advisory": "GHSA-xx3h-v363-q36j",
                "discovery": "UNKNOWN"
            }
        },
        "adp": [
            {
                "providerMetadata": {
                    "orgId": "af854a3a-2127-422b-91ae-364da2661108",
                    "shortName": "CVE",
                    "dateUpdated": "2024-08-02T18:18:10.180Z"
                },
                "title": "CVE Program Container",
                "references": [
                    {
                        "name": "https://github.com/nextcloud/security-advisories/security/advisories/GHSA-xx3h-v363-q36j",
                        "tags": [
                            "x_refsource_CONFIRM",
                            "x_transferred"
                        ],
                        "url": "https://github.com/nextcloud/security-advisories/security/advisories/GHSA-xx3h-v363-q36j"
                    },
                    {
                        "name": "https://github.com/nextcloud/user_oidc/pull/642",
                        "tags": [
                            "x_refsource_MISC",
                            "x_transferred"
                        ],
                        "url": "https://github.com/nextcloud/user_oidc/pull/642"
                    },
                    {
                        "name": "https://hackerone.com/reports/2021684",
                        "tags": [
                            "x_refsource_MISC",
                            "x_transferred"
                        ],
                        "url": "https://hackerone.com/reports/2021684"
                    }
                ]
            },
            {
                "metrics": [
                    {
                        "other": {
                            "type": "ssvc",
                            "content": {
                                "timestamp": "2024-10-03T15:08:38.977974Z",
                                "id": "CVE-2023-39953",
                                "options": [
                                    {
                                        "Exploitation": "none"
                                    },
                                    {
                                        "Automatable": "no"
                                    },
                                    {
                                        "Technical Impact": "partial"
                                    }
                                ],
                                "role": "CISA Coordinator",
                                "version": "2.0.3"
                            }
                        }
                    }
                ],
                "title": "CISA ADP Vulnrichment",
                "providerMetadata": {
                    "orgId": "134c704f-9b21-4f2e-91b3-4a467353bcc0",
                    "shortName": "CISA-ADP",
                    "dateUpdated": "2024-10-03T15:11:48.536Z"
                }
            }
        ]
    }
}