modules:
  - module: github.com/prometheus/client_golang
    versions:
      - fixed: 1.11.1
    vulnerable_at: 1.11.0
    packages:
      - package: github.com/prometheus/client_golang/prometheus/promhttp
        symbols:
          - sanitizeMethod
        derived_symbols:
          - Handler
          - HandlerFor
          - InstrumentHandlerCounter
          - InstrumentHandlerDuration
          - InstrumentHandlerRequestSize
          - InstrumentHandlerResponseSize
          - InstrumentHandlerTimeToWriteHeader
          - InstrumentMetricHandler
          - InstrumentRoundTripperCounter
          - InstrumentRoundTripperDuration
          - flusherDelegator.Flush
          - readerFromDelegator.ReadFrom
          - responseWriterDelegator.Write
          - responseWriterDelegator.WriteHeader
description: |
    The Prometheus client_golang HTTP server is vulnerable to a denial of
    service attack when handling requests with non-standard HTTP methods.

    In order to be affected, an instrumented software must use any of
    the promhttp.InstrumentHandler* middleware except `RequestsInFlight`;
    not filter any specific methods (e.g GET) before middleware;
    pass a metric with a "method" label name to a middleware; and not
    have any firewall/LB/proxy that filters away requests with unknown
    "method".
published: 2022-07-15T23:29:02Z
cves:
  - CVE-2022-21698
ghsas:
  - GHSA-cg3q-j54f-5p7p