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.
CVE-2022-21698 - High Severity Vulnerability
Vulnerable Libraries - github.com/Docker/Docker-v20.10.9+incompatible, github.com/docker/cli-v20.10.6+incompatible, github.com/docker/distribution-v2.7.1
github.com/Docker/Docker-v20.10.9+incompatible
Moby Project - a collaborative project for the container ecosystem to assemble container-based systems
Library home page: https://proxy.golang.org/github.com/!docker/!docker/@v/v20.10.9+incompatible.zip
Path to dependency file: /portainer-develop/portainer-develop/api/go.mod
Path to vulnerable library: /portainer-develop/portainer-develop/api/go.mod
Dependency Hierarchy: - :x: **github.com/Docker/Docker-v20.10.9+incompatible** (Vulnerable Library)
github.com/docker/cli-v20.10.6+incompatible
The Docker CLI
Library home page: https://proxy.golang.org/github.com/docker/cli/@v/v20.10.6+incompatible.zip
Path to dependency file: /portainer-develop/portainer-develop/api/go.mod
Path to vulnerable library: /portainer-develop/portainer-develop/api/go.mod
Dependency Hierarchy: - :x: **github.com/docker/cli-v20.10.6+incompatible** (Vulnerable Library)
github.com/docker/distribution-v2.7.1
The toolkit to pack, ship, store, and deliver container content
Library home page: https://proxy.golang.org/github.com/docker/distribution/@v/v2.7.1+incompatible.zip
Path to dependency file: /portainer-develop/portainer-develop/api/go.mod
Path to vulnerable library: /portainer-develop/portainer-develop/api/go.mod
Dependency Hierarchy: - github.com/Docker/Docker-v20.10.9+incompatible (Root Library) - :x: **github.com/docker/distribution-v2.7.1** (Vulnerable Library)
Found in HEAD commit: ec9d972edb7fb1ea028782bd0f770272d89e0c60
Found in base branch: main
Vulnerability Details
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.
Publish Date: 2022-02-15
URL: CVE-2022-21698
CVSS 3 Score Details (7.5)
Base Score Metrics: - Exploitability Metrics: - Attack Vector: Network - Attack Complexity: Low - Privileges Required: None - User Interaction: None - Scope: Unchanged - Impact Metrics: - Confidentiality Impact: None - Integrity Impact: None - Availability Impact: High
For more information on CVSS3 Scores, click here.Suggested Fix
Type: Upgrade version
Origin: https://github.com/prometheus/client_golang/security/advisories/GHSA-cg3q-j54f-5p7p
Release Date: 2022-02-15
Fix Resolution: v1.11.1
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