High, CVSS 7.5GoPublished
Uncontrolled Resource Consumption in promhttp
CVE-2022-21698 · GHSA-cg3q-j54f-5p7p
- Affected
- Go github.com/prometheus/client_golang < 1.11.1
- Fixed in
- 1.11.1· Vendor fix available
- Issue
- This is the Go client library for Prometheus. It has two separate parts, one for instrumenting application code, and one for creating clients that talk to the Prometheus HTTP API. clientgolang is the instrumentation library for Go applications in Prometheus, and the promhttp package in clientgolang provides tooling around HTTP servers and clients. Impact HTTP server susceptible to a Denial of Service through unbounded cardinality, and potential memory exhaustion, when handling requests with non-standard HTTP methods. Affected Configuration In order to be affected, an instrumented software must Use any of promhttp.InstrumentHandler middleware except RequestsInFlight. Do not filter any specific methods (e.g GET) before middleware. Pass metric with method label name to our middleware. Not have any firewall/LB/proxy that filters away requests with unknown method. Patches https://github.com/prometheus/clientgolang/pull/962 https://github.com/prometheus/clientgolang/pull/987 Workarounds If…
Recommended action: Upgrade to 1.11.1 or later, then redeploy and verify.A vendor fix does not resolve your finding until you verify it in your own systems.