{
    "dataType": "CVE_RECORD",
    "dataVersion": "5.1",
    "cveMetadata": {
        "cveId": "CVE-2024-30255",
        "assignerOrgId": "a0819718-46f1-4df5-94e2-005712e83aaa",
        "state": "PUBLISHED",
        "assignerShortName": "GitHub_M",
        "dateReserved": "2024-03-26T12:52:00.934Z",
        "datePublished": "2024-04-04T19:41:02.634Z",
        "dateUpdated": "2024-08-02T01:32:05.423Z"
    },
    "containers": {
        "cna": {
            "title": "HTTP/2: CPU exhaustion due to CONTINUATION frame flood",
            "problemTypes": [
                {
                    "descriptions": [
                        {
                            "cweId": "CWE-390",
                            "lang": "en",
                            "description": "CWE-390: Detection of Error Condition Without Action",
                            "type": "CWE"
                        }
                    ]
                }
            ],
            "metrics": [
                {
                    "cvssV3_1": {
                        "attackComplexity": "LOW",
                        "attackVector": "NETWORK",
                        "availabilityImpact": "LOW",
                        "baseScore": 5.3,
                        "baseSeverity": "MEDIUM",
                        "confidentialityImpact": "NONE",
                        "integrityImpact": "NONE",
                        "privilegesRequired": "NONE",
                        "scope": "UNCHANGED",
                        "userInteraction": "NONE",
                        "vectorString": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:L",
                        "version": "3.1"
                    }
                }
            ],
            "references": [
                {
                    "name": "https://github.com/envoyproxy/envoy/security/advisories/GHSA-j654-3ccm-vfmm",
                    "tags": [
                        "x_refsource_CONFIRM"
                    ],
                    "url": "https://github.com/envoyproxy/envoy/security/advisories/GHSA-j654-3ccm-vfmm"
                },
                {
                    "url": "http://www.openwall.com/lists/oss-security/2024/04/05/3"
                },
                {
                    "url": "http://www.openwall.com/lists/oss-security/2024/04/03/16"
                }
            ],
            "affected": [
                {
                    "vendor": "envoyproxy",
                    "product": "envoy",
                    "versions": [
                        {
                            "version": ">= 1.29.0, < 1.29.3",
                            "status": "affected"
                        },
                        {
                            "version": ">= 1.28.0, < 1.28.2",
                            "status": "affected"
                        },
                        {
                            "version": ">= 1.27.0, < 1.27.4",
                            "status": "affected"
                        },
                        {
                            "version": "< 1.26.8",
                            "status": "affected"
                        }
                    ]
                }
            ],
            "providerMetadata": {
                "orgId": "a0819718-46f1-4df5-94e2-005712e83aaa",
                "shortName": "GitHub_M",
                "dateUpdated": "2024-04-04T19:41:02.634Z"
            },
            "descriptions": [
                {
                    "lang": "en",
                    "value": "Envoy is a cloud-native, open source edge and service proxy. The HTTP/2 protocol stack in Envoy versions prior to 1.29.3, 1.28.2, 1.27.4, and 1.26.8 are vulnerable to CPU exhaustion due to flood of CONTINUATION frames. Envoy's HTTP/2 codec allows the client to send an unlimited number of CONTINUATION frames even after exceeding Envoy's header map limits. This allows an attacker to send a sequence of CONTINUATION frames without the END_HEADERS bit set causing CPU utilization, consuming approximately 1 core per 300Mbit/s of traffic and culminating in denial of service through CPU exhaustion. Users should upgrade to version 1.29.3, 1.28.2, 1.27.4, or 1.26.8 to mitigate the effects of the CONTINUATION flood. As a workaround, disable HTTP/2 protocol for downstream connections."
                }
            ],
            "source": {
                "advisory": "GHSA-j654-3ccm-vfmm",
                "discovery": "UNKNOWN"
            }
        },
        "adp": [
            {
                "affected": [
                    {
                        "vendor": "envoyproxy",
                        "product": "envoy",
                        "cpes": [
                            "cpe:2.3:a:envoyproxy:envoy:*:*:*:*:*:*:*:*"
                        ],
                        "defaultStatus": "unknown",
                        "versions": [
                            {
                                "version": "1.29.0",
                                "status": "affected",
                                "lessThan": "1.29.3",
                                "versionType": "custom"
                            },
                            {
                                "version": "1.28.0",
                                "status": "affected",
                                "lessThan": "1.28.2",
                                "versionType": "custom"
                            },
                            {
                                "version": "1.27.0",
                                "status": "affected",
                                "lessThan": "1.27.4",
                                "versionType": "custom"
                            },
                            {
                                "version": "0",
                                "status": "affected",
                                "lessThan": "1.26.8",
                                "versionType": "custom"
                            }
                        ]
                    }
                ],
                "metrics": [
                    {
                        "other": {
                            "type": "ssvc",
                            "content": {
                                "timestamp": "2024-04-08T14:58:49.679014Z",
                                "id": "CVE-2024-30255",
                                "options": [
                                    {
                                        "Exploitation": "none"
                                    },
                                    {
                                        "Automatable": "yes"
                                    },
                                    {
                                        "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": "2024-07-16T13:47:51.426Z"
                }
            },
            {
                "providerMetadata": {
                    "orgId": "af854a3a-2127-422b-91ae-364da2661108",
                    "shortName": "CVE",
                    "dateUpdated": "2024-08-02T01:32:05.423Z"
                },
                "title": "CVE Program Container",
                "references": [
                    {
                        "name": "https://github.com/envoyproxy/envoy/security/advisories/GHSA-j654-3ccm-vfmm",
                        "tags": [
                            "x_refsource_CONFIRM",
                            "x_transferred"
                        ],
                        "url": "https://github.com/envoyproxy/envoy/security/advisories/GHSA-j654-3ccm-vfmm"
                    },
                    {
                        "url": "http://www.openwall.com/lists/oss-security/2024/04/05/3",
                        "tags": [
                            "x_transferred"
                        ]
                    },
                    {
                        "url": "http://www.openwall.com/lists/oss-security/2024/04/03/16",
                        "tags": [
                            "x_transferred"
                        ]
                    }
                ]
            }
        ]
    }
}