CVE-2022-39271
There is a potential vulnerability in Traefik managing HTTP/2 connections.
Does this matter?
High impact if exploited, but EPSS currently rates exploitation as unlikely (1.10%). Schedule it in the normal patch cycle and watch for a rise in EPSS or a public exploit.
Description
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.
- CVSS 3.1
- 7.5 HIGHCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
- EPSS
- 1.10% probability · 64th percentile
- CISA KEV
- Not listed
- Weakness
- CWE-400, CWE-755
- Affected
- traefik/traefik
- Source
- security-advisories@github.com
References
- https://github.com/traefik/traefik/releases/tag/v2.8.8Release Notes, Third Party Advisory
- https://github.com/traefik/traefik/releases/tag/v2.9.0-rc5Release Notes, Third Party Advisory
- https://github.com/traefik/traefik/security/advisories/GHSA-c6hx-pjc3-7fqrPatch, Third Party Advisory
- https://github.com/traefik/traefik/releases/tag/v2.8.8Release Notes, Third Party Advisory
- https://github.com/traefik/traefik/releases/tag/v2.9.0-rc5Release Notes, Third Party Advisory
- https://github.com/traefik/traefik/security/advisories/GHSA-c6hx-pjc3-7fqrPatch, Third Party Advisory
Source: NVD record, EPSS from FIRST.org, KEV from CISA. Refreshed daily.