CVE-2022-21698

Aliases:GHSA-cg3q-j54f-5p7pGO-2022-0322RHSA-2022:4667DEBIAN-CVE-2022-21698CGA-ccg6-xf7q-pc2wCGA-j27x-m2x4-pv57CGA-39f8-qwv5-r9h9CGA-c2c7-hf9x-g5x7CGA-f4qv-944j-whvmCGA-h7r8-9c9q-9fw3SUSE-SU-2026:4106-1
Advisory lineage Upstream: 0 Downstream: 44
Modified
Published: 15 Feb 2022, 00:00
Last modified:23 Apr 2025, 19:05

Vulnerability Summary

Overall Risk (default)
medium
31/100
CVSS Score
7.5 HIGH
v3.1 (cve.org)
EPSS Score
5.99% LOW
6% probability +5.71%
KEV
Not listed
Ransomware
No reports
Public exploits
None found
Dark Web
Not detected

Timeline

15 Feb 2022, 00:00
Published
Vulnerability first disclosed
23 Apr 2025, 19:05
Last Modified
Vulnerability information updated

Description

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.

CVSS Metrics

  • v3.1•HIGH•Score: 7.5CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
  • v2.0•MEDIUM•Score: 5AV:N/AC:L/Au:N/C:N/I:N/A:P

EPSS Trends

Current EPSS score: 5.99%• Percentile: 93%

Techniques & Countermeasures

  • CWE-400•Uncontrolled Resource Consumption

    The product does not properly control the allocation and maintenance of a limited resource.

  • CWE-770•Allocation of Resources Without Limits or Throttling

    The product allocates a reusable resource or group of resources on behalf of an actor without imposing any intended restrictions on the size or number of resources that can be allocated.

Affected Systems

  • chainguard•dynamic-localpv-provisioner

    < 3.4.1-r3

  • chainguard•dynamic-localpv-provisioner-fips

    < 3.5.0-r0

  • chainguard•prometheus-postgres-exporter-0.10

    < 0

  • wolfi•dynamic-localpv-provisioner

    < 3.4.1-r3

  • debian•golang-github-prometheus-client-golang

    all | < 1.11.1-1 | < 1.11.1-1 | < 1.11.1-1

  • fedoraproject•extra_packages_for_enterprise_linux

    7.0 | 8.0

  • fedoraproject•fedora

    34 | 35 | 36 | 37

  • github.com/prometheus•client_golang

    < 1.11.1

  • prometheus•client_golang

    < 1.11.1

  • rdo_project•rdo

    na

  • redhat•kubevirt

    < 0:4.10.1-489.el7 | < 0:4.10.1-489.el8

  • redhat•kubevirt-virtctl

    < 0:4.10.1-489.el7 | < 0:4.10.1-489.el8

  • redhat•kubevirt-virtctl-redistributable

    < 0:4.10.1-489.el7 | < 0:4.10.1-489.el8

  • suse•golang-github-vpenso-prometheus_slurm_exporter&distro=SUSE Linux Enterprise High Performance Computing 15 SP4-ESPOS

    < 0.20-150300.3.11.2

  • suse•golang-github-vpenso-prometheus_slurm_exporter&distro=SUSE Linux Enterprise High Performance Computing 15 SP4-LTSS

    < 0.20-150300.3.11.2

  • suse•golang-github-vpenso-prometheus_slurm_exporter&distro=SUSE Linux Enterprise High Performance Computing 15 SP5-ESPOS

    < 0.20-150300.3.11.2

  • suse•golang-github-vpenso-prometheus_slurm_exporter&distro=SUSE Linux Enterprise High Performance Computing 15 SP5-LTSS

    < 0.20-150300.3.11.2

  • suse•golang-github-vpenso-prometheus_slurm_exporter&distro=SUSE Linux Enterprise Module for HPC 15 SP7

    < 0.20-150300.3.11.2

  • suse•golang-github-vpenso-prometheus_slurm_exporter&distro=SUSE Linux Enterprise Module for Package Hub 15 SP7

    < 0.20-150300.3.11.2

  • suse•golang-github-vpenso-prometheus_slurm_exporter&distro=SUSE Linux Enterprise Server 15 SP6-LTSS

    < 0.20-150300.3.11.2

References (55)