{
    "data_version": "4.0",
    "data_type": "CVE",
    "data_format": "MITRE",
    "CVE_data_meta": {
        "ID": "CVE-2023-23928",
        "ASSIGNER": "security-advisories@github.com",
        "STATE": "PUBLIC"
    },
    "description": {
        "description_data": [
            {
                "lang": "eng",
                "value": "reason-jose is a JOSE implementation in ReasonML and OCaml.`Jose.Jws.validate` does not check HS256 signatures. This allows tampering of JWS header and payload data if the service does not perform additional checks. Such tampering could expose applications using reason-jose to authorization bypass. Applications relying on JWS claims assertion to enforce security boundaries may be vulnerable to privilege escalation. This issue has been patched in version 0.8.2."
            }
        ]
    },
    "problemtype": {
        "problemtype_data": [
            {
                "description": [
                    {
                        "lang": "eng",
                        "value": "CWE-347: Improper Verification of Cryptographic Signature",
                        "cweId": "CWE-347"
                    }
                ]
            }
        ]
    },
    "affects": {
        "vendor": {
            "vendor_data": [
                {
                    "vendor_name": "ulrikstrid",
                    "product": {
                        "product_data": [
                            {
                                "product_name": "reason-jose",
                                "version": {
                                    "version_data": [
                                        {
                                            "version_value": "< 0.8.2",
                                            "version_affected": "="
                                        }
                                    ]
                                }
                            }
                        ]
                    }
                }
            ]
        }
    },
    "references": {
        "reference_data": [
            {
                "url": "https://github.com/ulrikstrid/reason-jose/security/advisories/GHSA-7jj9-6qwv-wpm7",
                "refsource": "MISC",
                "name": "https://github.com/ulrikstrid/reason-jose/security/advisories/GHSA-7jj9-6qwv-wpm7"
            },
            {
                "url": "https://github.com/ulrikstrid/reason-jose/commit/36cd724db3cbec121757624da49072386bd869e5",
                "refsource": "MISC",
                "name": "https://github.com/ulrikstrid/reason-jose/commit/36cd724db3cbec121757624da49072386bd869e5"
            },
            {
                "url": "https://github.com/ulrikstrid/reason-jose/releases/tag/v0.8.2",
                "refsource": "MISC",
                "name": "https://github.com/ulrikstrid/reason-jose/releases/tag/v0.8.2"
            }
        ]
    },
    "source": {
        "advisory": "GHSA-7jj9-6qwv-wpm7",
        "discovery": "UNKNOWN"
    },
    "impact": {
        "cvss": [
            {
                "attackComplexity": "HIGH",
                "attackVector": "NETWORK",
                "availabilityImpact": "NONE",
                "baseScore": 5.9,
                "baseSeverity": "MEDIUM",
                "confidentialityImpact": "LOW",
                "integrityImpact": "HIGH",
                "privilegesRequired": "LOW",
                "scope": "UNCHANGED",
                "userInteraction": "NONE",
                "vectorString": "CVSS:3.1/AV:N/AC:H/PR:L/UI:N/S:U/C:L/I:H/A:N",
                "version": "3.1"
            }
        ]
    }
}