CVE-2023-31417 (https://discuss.elastic.co/t/elasticsearch-8-9-2-and-7-17-13-security-update/342479): Elasticsearch generally filters out sensitive information and credentials before logging to the audit log. It was found that this filtering was not applied when requests to Elasticsearch use certain deprecated URIs for APIs. The impact of this flaw is that sensitive information such as passwords and tokens might be printed in cleartext in Elasticsearch audit logs. Note that audit logging is disabled by default and needs to be explicitly enabled and even when audit logging is enabled, request bodies that could contain sensitive information are not printed to the audit log unless explicitly configured. CVE-2023-31418 (https://discuss.elastic.co/t/elasticsearch-8-9-0-7-17-13-security-update/343616): An issue has been identified with how Elasticsearch handled incoming requests on the HTTP layer. An unauthenticated user could force an Elasticsearch node to exit with an OutOfMemory error by sending a moderate number of malformed HTTP requests. The issue was identified by Elastic Engineering and we have no indication that the issue is known or that it is being exploited in the wild. CVE-2023-31419 (https://discuss.elastic.co/t/elasticsearch-8-9-1-7-17-13-security-update/343297): A flaw was discovered in Elasticsearch, affecting the _search API that allowed a specially crafted query string to cause a Stack Overflow and ultimately a Denial of Service. Unclear to me if 8.10 is affected, is it? Please also cleanup <7.17.12.
