Information disclosure in Elasticsearch

1) Improper Authorization

EUVDB-ID: #VU91267

Risk: Low

CVSSv3.1: 2 [CVSS:3.1/AV:N/AC:H/PR:H/UI:N/S:U/C:L/I:N/A:N/E:U/RL:O/RC:C]

CVE-ID: CVE-2024-23451

CWE-ID: CWE-285 - Improper Authorization

Exploit availability: No

Description

The vulnerability allows a remote user to gain access to sensitive information.

The vulnerability exists due to improper authorization within the API key based security model for Remote Cluster Security. A remote user with a valid API key for a remote cluster configured to use new Remote Cluster Security can read arbitrary documents from any index on the remote cluster, if they use the Elasticsearch custom transport protocol to issue requests with the target index ID, the shard ID and the document ID.

Mitigation

Install updates from vendor's website.

Vulnerable software versions

Elasticsearch: 8.10.0 - 8.12.2

CPE2.3

• cpe:2.3:a:elastic_stack:elasticsearch:8.10.4:*:*:*:*:*:*:*
• cpe:2.3:a:elastic_stack:elasticsearch:8.12.2:*:*:*:*:*:*:*
• cpe:2.3:a:elastic_stack:elasticsearch:8.11.4:*:*:*:*:*:*:*

External links

http://discuss.elastic.co/t/elasticsearch-8-13-0-security-update-esa-2024-07/356315

Q & A

Can this vulnerability be exploited remotely?

Yes. This vulnerability can be exploited by a remote authenticated privileged user via the Internet.

Is there known malware, which exploits this vulnerability?

No. We are not aware of malware exploiting this vulnerability.