{
    "dataType": "CVE_RECORD",
    "dataVersion": "5.1",
    "cveMetadata": {
        "cveId": "CVE-2023-27491",
        "assignerOrgId": "a0819718-46f1-4df5-94e2-005712e83aaa",
        "state": "PUBLISHED",
        "assignerShortName": "GitHub_M",
        "dateReserved": "2023-03-01T19:03:56.634Z",
        "datePublished": "2023-04-04T18:18:23.433Z",
        "dateUpdated": "2024-08-02T12:16:35.377Z"
    },
    "containers": {
        "cna": {
            "title": "Envoy forwards invalid Http2/Http3 downstream headers",
            "problemTypes": [
                {
                    "descriptions": [
                        {
                            "cweId": "CWE-20",
                            "lang": "en",
                            "description": "CWE-20: Improper Input Validation",
                            "type": "CWE"
                        }
                    ]
                }
            ],
            "metrics": [
                {
                    "cvssV3_1": {
                        "attackComplexity": "LOW",
                        "attackVector": "NETWORK",
                        "availabilityImpact": "NONE",
                        "baseScore": 5.4,
                        "baseSeverity": "MEDIUM",
                        "confidentialityImpact": "LOW",
                        "integrityImpact": "LOW",
                        "privilegesRequired": "NONE",
                        "scope": "UNCHANGED",
                        "userInteraction": "REQUIRED",
                        "vectorString": "CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:L/I:L/A:N",
                        "version": "3.1"
                    }
                }
            ],
            "references": [
                {
                    "name": "https://github.com/envoyproxy/envoy/security/advisories/GHSA-5jmv-cw9p-f9rp",
                    "tags": [
                        "x_refsource_CONFIRM"
                    ],
                    "url": "https://github.com/envoyproxy/envoy/security/advisories/GHSA-5jmv-cw9p-f9rp"
                },
                {
                    "name": "https://datatracker.ietf.org/doc/html/rfc9113#section-8.3",
                    "tags": [
                        "x_refsource_MISC"
                    ],
                    "url": "https://datatracker.ietf.org/doc/html/rfc9113#section-8.3"
                },
                {
                    "name": "https://datatracker.ietf.org/doc/html/rfc9114#section-4.3.1",
                    "tags": [
                        "x_refsource_MISC"
                    ],
                    "url": "https://datatracker.ietf.org/doc/html/rfc9114#section-4.3.1"
                },
                {
                    "name": "https://www.rfc-editor.org/rfc/rfc9110#section-5.6.2",
                    "tags": [
                        "x_refsource_MISC"
                    ],
                    "url": "https://www.rfc-editor.org/rfc/rfc9110#section-5.6.2"
                }
            ],
            "affected": [
                {
                    "vendor": "envoyproxy",
                    "product": "envoy",
                    "versions": [
                        {
                            "version": ">= 1.25.0, < 1.25.3",
                            "status": "affected"
                        },
                        {
                            "version": ">= 1.24.0, < 1.24.4",
                            "status": "affected"
                        },
                        {
                            "version": ">= 1.23.0, < 1.23.6",
                            "status": "affected"
                        },
                        {
                            "version": "< 1.22.9",
                            "status": "affected"
                        }
                    ]
                }
            ],
            "providerMetadata": {
                "orgId": "a0819718-46f1-4df5-94e2-005712e83aaa",
                "shortName": "GitHub_M",
                "dateUpdated": "2023-04-04T18:18:23.433Z"
            },
            "descriptions": [
                {
                    "lang": "en",
                    "value": "Envoy is an open source edge and service proxy designed for cloud-native applications. Compliant HTTP/1 service should reject malformed request lines. Prior to versions 1.26.0, 1.25.3, 1.24.4, 1.23.6, and 1.22.9, There is a possibility that non compliant HTTP/1 service may allow malformed requests, potentially leading to a bypass of security policies. This issue is fixed in versions 1.26.0, 1.25.3, 1.24.4, 1.23.6, and 1.22.9."
                }
            ],
            "source": {
                "advisory": "GHSA-5jmv-cw9p-f9rp",
                "discovery": "UNKNOWN"
            }
        },
        "adp": [
            {
                "providerMetadata": {
                    "orgId": "af854a3a-2127-422b-91ae-364da2661108",
                    "shortName": "CVE",
                    "dateUpdated": "2024-08-02T12:16:35.377Z"
                },
                "title": "CVE Program Container",
                "references": [
                    {
                        "name": "https://github.com/envoyproxy/envoy/security/advisories/GHSA-5jmv-cw9p-f9rp",
                        "tags": [
                            "x_refsource_CONFIRM",
                            "x_transferred"
                        ],
                        "url": "https://github.com/envoyproxy/envoy/security/advisories/GHSA-5jmv-cw9p-f9rp"
                    },
                    {
                        "name": "https://datatracker.ietf.org/doc/html/rfc9113#section-8.3",
                        "tags": [
                            "x_refsource_MISC",
                            "x_transferred"
                        ],
                        "url": "https://datatracker.ietf.org/doc/html/rfc9113#section-8.3"
                    },
                    {
                        "name": "https://datatracker.ietf.org/doc/html/rfc9114#section-4.3.1",
                        "tags": [
                            "x_refsource_MISC",
                            "x_transferred"
                        ],
                        "url": "https://datatracker.ietf.org/doc/html/rfc9114#section-4.3.1"
                    },
                    {
                        "name": "https://www.rfc-editor.org/rfc/rfc9110#section-5.6.2",
                        "tags": [
                            "x_refsource_MISC",
                            "x_transferred"
                        ],
                        "url": "https://www.rfc-editor.org/rfc/rfc9110#section-5.6.2"
                    }
                ]
            }
        ]
    }
}