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Amazon Linux 2023: CVE-2023-27496: Important priority package update for ecs-service-connect-agent

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Amazon Linux 2023: CVE-2023-27496: Important priority package update for ecs-service-connect-agent

Severity
8
CVSS
(AV:N/AC:L/Au:N/C:N/I:N/A:C)
Published
04/04/2023
Created
02/14/2025
Added
02/14/2025
Modified
02/14/2025

Description

Envoy is an open source edge and service proxy designed for cloud-native applications. Prior to versions 1.26.0, 1.25.3, 1.24.4, 1.23.6, and 1.22.9, the OAuth filter assumes that a `state` query param is present on any response that looks like an OAuth redirect response. Sending it a request with the URI path equivalent to the redirect path, without the `state` parameter, will lead to abnormal termination of Envoy process. Versions 1.26.0, 1.25.3, 1.24.4, 1.23.6, and 1.22.9 contain a patch. The issue can also be mitigated by locking down OAuth traffic, disabling the filter, or by filtering traffic before it reaches the OAuth filter (e.g. via a lua script).

Solution(s)

  • amazon-linux-2023-upgrade-ecs-service-connect-agent

References

  • https://attackerkb.com/topics/cve-2023-27496
  • CVE - 2023-27496
  • https://alas.aws.amazon.com/AL2023/ALAS-2023-165.html
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