CVE-2022-39271

Summary

Traefik (pronounced traffic) is a modern HTTP reverse proxy and load balancer that assists in deploying microservices. There is a potential vulnerability in Traefik managing HTTP/2 connections. A closing HTTP/2 server connection could hang forever because of a subsequent fatal error. This failure mode could be exploited to cause a denial of service. There has been a patch released in versions 2.8.8 and 2.9.0-rc5. There are currently no known workarounds.

Affected Software

Weaknesses

• CWE-400: CWE-400: Uncontrolled Resource Consumption

ADP Enrichment

CVE Program Container

Additional References

• https://github.com/traefik/traefik/security/advisories/GHSA-c6hx-pjc3-7fqr
• https://github.com/traefik/traefik/releases/tag/v2.8.8
• https://github.com/traefik/traefik/releases/tag/v2.9.0-rc5

CISA ADP Vulnrichment

• SSVC:
• Exploitation: none
  • Automatable: yes
  • Technical Impact: partial

References

• https://github.com/traefik/traefik/security/advisories/GHSA-c6hx-pjc3-7fqr
• https://github.com/traefik/traefik/releases/tag/v2.8.8
• https://github.com/traefik/traefik/releases/tag/v2.9.0-rc5

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