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CVE-2022-21698 Detail

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.


Metrics

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CVSS 4.0 Severity and Vector Strings:

NIST CVSS score
NIST: NVD
N/A
NVD assessment not yet provided.

References to Advisories, Solutions, and Tools

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Hyperlink Resource
https://github.com/prometheus/client_golang/pull/962 Patch  Third Party Advisory 
https://github.com/prometheus/client_golang/pull/962 Patch  Third Party Advisory 
https://github.com/prometheus/client_golang/pull/987 Patch  Third Party Advisory 
https://github.com/prometheus/client_golang/pull/987 Patch  Third Party Advisory 
https://github.com/prometheus/client_golang/releases/tag/v1.11.1 Release Notes  Third Party Advisory 
https://github.com/prometheus/client_golang/releases/tag/v1.11.1 Release Notes  Third Party Advisory 
https://github.com/prometheus/client_golang/security/advisories/GHSA-cg3q-j54f-5p7p Issue Tracking  Third Party Advisory 
https://github.com/prometheus/client_golang/security/advisories/GHSA-cg3q-j54f-5p7p Issue Tracking  Third Party Advisory 
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Weakness Enumeration

CWE-ID CWE Name Source
CWE-770 Allocation of Resources Without Limits or Throttling cwe source acceptance level NIST  
CWE-400 Uncontrolled Resource Consumption GitHub, Inc.  

Known Affected Software Configurations Switch to CPE 2.2

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Change History

21 change records found show changes

Quick Info

CVE Dictionary Entry:
CVE-2022-21698
NVD Published Date:
02/15/2022
NVD Last Modified:
11/21/2024
Source:
GitHub, Inc.