GMS-2023-3477: OpenSearch uncontrolled resource consumption

Impact

An issue has been identified with how OpenSearch handled incoming requests on the HTTP layer. An unauthenticated user could force an OpenSearch node to exit with an OutOfMemory error by sending a moderate number of malformed HTTP requests.

The issue was identified by Elastic Engineering and corresponds to security advisory ESA-2023-13 (CVE-2023-31418).

Mitigation

Versions 1.3.14 and 2.11.0 contain a fix for this issue.

For more information

If you have any questions or comments about this advisory, please contact AWS/Amazon Security via our issue reporting page (https://aws.amazon.com/security/vulnerability-reporting/) or directly via email to aws-security@amazon.com. Please do not create a public GitHub issue.