{"id":"CVE-2022-21698","published":"2022-02-15T00:00:00Z","modified":"2025-04-23T19:05:16Z","title":"Uncontrolled Resource Consumption in promhttp","vendor":"prometheus","product":"client_golang","tier":"tail","description":{"text":"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.","provenance":"source","from":"CVE.org"},"cvss":{"score":7.5,"severity":"HIGH","version":"3.1","vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H","provenance":"source","from":"CVE.org CNA"},"epss":{"score":0.05994,"percentile":0.93293,"provenance":"source"},"cwes":[{"id":"CWE-400","name":"Uncontrolled Resource Consumption"}],"references":[{"url":"https://github.com/prometheus/client_golang/security/advisories/GHSA-cg3q-j54f-5p7p","tags":[]},{"url":"https://github.com/prometheus/client_golang/pull/962","tags":[]},{"url":"https://github.com/prometheus/client_golang/pull/987","tags":[]},{"url":"https://github.com/prometheus/client_golang/releases/tag/v1.11.1","tags":[]},{"url":"https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/FY3N7H6VSDZM37B4SKM2PFFCUWU7QYWN/","tags":["vendor-advisory"]},{"url":"https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/ZKORFJTRRDJCWBTJPISKKCVMMMJBIRLG/","tags":["vendor-advisory"]},{"url":"https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/AK7CJBCGERCRXYUR2EWDSSDVAQMTAZGX/","tags":["vendor-advisory"]},{"url":"https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/SASRKYHT5ZFSVMJUQUG3UAEQRJYGJKAR/","tags":["vendor-advisory"]},{"url":"https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/KBMVIQFKQDSSTHVVJWJ4QH6TW3JVB7XZ/","tags":["vendor-advisory"]},{"url":"https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/7V7I72LSQ3IET3QJR6QPAVGJZ4CBDLN5/","tags":["vendor-advisory"]},{"url":"https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/HLAQRRGNSO5MYCPAXGPH2OCSHOGHSQMQ/","tags":["vendor-advisory"]},{"url":"https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/2PFW6Q2LXXWTFRTMTRN4ZGADFRQPKJ3D/","tags":["vendor-advisory"]},{"url":"https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/J5WPM42UR6XIBQNQPNQHM32X7S4LJTRX/","tags":["vendor-advisory"]},{"url":"https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/4KDETHL5XCT6RZN2BBNOCEXRZ2W3SFU3/","tags":["vendor-advisory"]},{"url":"https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/36GUEPA5TPSC57DZTPYPBL6T7UPQ2FRH/","tags":["vendor-advisory"]},{"url":"https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/DLUJZV3HBP56ADXU6QH2V7RNYUPMVBXQ/","tags":["vendor-advisory"]},{"url":"https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/2IK53GWZ475OQ6ENABKMJMTOBZG6LXUR/","tags":["vendor-advisory"]},{"url":"https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/MH6ALXEQXIFQRQFNJ5Y2MJ5DFPIX76VN/","tags":["vendor-advisory"]},{"url":"https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/ZY2SLWOQR4ZURQ7UBRZ7JIX6H6F5JHJR/","tags":["vendor-advisory"]},{"url":"https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/RN7JGC2LVHPEGSJYODFUV5FEKPBVG4D7/","tags":["vendor-advisory"]},{"url":"https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/5OGNAFVXSMTTT2UPH6CS3IH6L3KM42Q7/","tags":["vendor-advisory"]},{"url":"https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/3L6GDN5S5QZSCFKWD3GKL2RDZQ6B4UWA/","tags":["vendor-advisory"]}],"priority":{"score":23.9,"factors":[{"name":"EPSS percentile","points":18.66},{"name":"CVSS severity","points":5.25}]},"vendorSlug":"prometheus","affectedVersions":[{"vendor":"prometheus","product":"client_golang","versions":["< 1.11.1"]}],"affected":[{"ecosystem":"Go","package":"github.com/prometheus/client_golang","vulnerableRanges":["<1.11.1"],"patched":["1.11.1"],"from":["GHSA-cg3q-j54f-5p7p","GO-2022-0322"],"provenance":"source"}],"euvd":{"id":"EUVD-2022-0960","exploited":false,"provenance":"source"},"lineage":{"familyId":"fam-open-telemetry-opentelemetry-go-contrib-cve-2022-21698","children":[{"from":"CVE-2022-21698","to":"CVE-2023-25151","relation":"related","confidence":"high","kind":"lineage","evidence":[{"kind":"osv-related","provenance":"source","id":"GHSA-5r5m-65gx-7vrh","via":"related"},{"kind":"osv-related","provenance":"source","id":"GHSA-cg3q-j54f-5p7p","via":"related"},{"kind":"osv-related","provenance":"source","id":"GO-2022-0322","via":"related"},{"kind":"osv-related","provenance":"source","id":"GO-2023-1546","via":"related"}]},{"from":"CVE-2022-21698","to":"CVE-2023-45142","relation":"related","confidence":"high","kind":"lineage","evidence":[{"kind":"osv-related","provenance":"source","id":"GHSA-cg3q-j54f-5p7p","via":"related"},{"kind":"osv-related","provenance":"source","id":"GHSA-rcjv-mgp8-qvmr","via":"related"},{"kind":"osv-related","provenance":"source","id":"GO-2022-0322","via":"related"},{"kind":"osv-related","provenance":"source","id":"GO-2023-2113","via":"related"},{"kind":"osv-related","provenance":"source","id":"GHSA-rcjv-mgp8-qvmr","via":"reference","url":"https://github.com/advisories/GHSA-cg3q-j54f-5p7p"}]}]}}