{
    "dataType": "CVE_RECORD",
    "dataVersion": "5.1",
    "cveMetadata": {
        "state": "PUBLISHED",
        "cveId": "CVE-2022-21698",
        "assignerOrgId": "a0819718-46f1-4df5-94e2-005712e83aaa",
        "assignerShortName": "GitHub_M",
        "dateUpdated": "2024-08-03T02:53:34.814Z",
        "dateReserved": "2021-11-16T00:00:00",
        "datePublished": "2022-02-15T00:00:00"
    },
    "containers": {
        "cna": {
            "title": "Uncontrolled Resource Consumption in promhttp",
            "providerMetadata": {
                "orgId": "a0819718-46f1-4df5-94e2-005712e83aaa",
                "shortName": "GitHub_M",
                "dateUpdated": "2022-11-14T00:00:00"
            },
            "descriptions": [
                {
                    "lang": "en",
                    "value": "client_golang is the instrumentation library for Go applications in Prometheus, and the promhttp package in client_golang provides tooling around HTTP servers and clients. In client_golang prior to version 1.11.1, HTTP server is susceptible to a Denial of Service through unbounded cardinality, and potential memory exhaustion, when handling requests with non-standard HTTP methods. In order to be affected, an instrumented software must use any of `promhttp.InstrumentHandler*` middleware except `RequestsInFlight`; not filter any specific methods (e.g GET) before middleware; pass metric with `method` label name to our middleware; and not have any firewall/LB/proxy that filters away requests with unknown `method`. client_golang version 1.11.1 contains a patch for this issue. Several workarounds are available, including removing the `method` label name from counter/gauge used in the InstrumentHandler; turning off affected promhttp handlers; adding custom middleware before promhttp handler that will sanitize the request method given by Go http.Request; and using a reverse proxy or web application firewall, configured to only allow a limited set of methods."
                }
            ],
            "affected": [
                {
                    "vendor": "prometheus",
                    "product": "client_golang",
                    "versions": [
                        {
                            "version": "< 1.11.1",
                            "status": "affected"
                        }
                    ]
                }
            ],
            "references": [
                {
                    "url": "https://github.com/prometheus/client_golang/security/advisories/GHSA-cg3q-j54f-5p7p"
                },
                {
                    "url": "https://github.com/prometheus/client_golang/pull/962"
                },
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            ],
            "metrics": [
                {
                    "cvssV3_1": {
                        "version": "3.1",
                        "vectorString": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H",
                        "attackVector": "NETWORK",
                        "attackComplexity": "LOW",
                        "privilegesRequired": "NONE",
                        "userInteraction": "NONE",
                        "scope": "UNCHANGED",
                        "confidentialityImpact": "NONE",
                        "integrityImpact": "NONE",
                        "availabilityImpact": "HIGH",
                        "baseScore": 7.5,
                        "baseSeverity": "HIGH"
                    }
                }
            ],
            "problemTypes": [
                {
                    "descriptions": [
                        {
                            "type": "CWE",
                            "lang": "en",
                            "description": "CWE-400: Uncontrolled Resource Consumption",
                            "cweId": "CWE-400"
                        }
                    ]
                }
            ],
            "source": {
                "advisory": "GHSA-cg3q-j54f-5p7p",
                "discovery": "UNKNOWN"
            }
        },
        "adp": [
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                "title": "CVE Program Container",
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}