#VU81073 Resource exhaustion in Elasticsearch and Elastic Cloud Enterprise - CVE-2023-31418

Vulnerability identifier: #VU81073

Vulnerability risk: Medium

CVSSv4.0: 6.6 [CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:N/VI:N/VA:H/SC:N/SI:N/SA:N/E:U/U:Green]

CVE-ID: CVE-2023-31418

CWE-ID: CWE-400

Exploitation vector: Network

Exploit availability: No

Vulnerable software:
Elasticsearch
Web applications / Other software
Elastic Cloud Enterprise
Server applications / Other server solutions

Vendor: Elastic Stack

Description

The vulnerability allows a remote attacker to perform a denial of service (DoS) attack.

The vulnerability exists due to application does not properly control consumption of internal resources. A remote non-authenticated attacker can send specially crafted HTTP requests to the application, cause an OutOfMemory error and perform a denial of service (DoS) attack.

Mitigation
Install updates from vendor's website.

Vulnerable software versions

Elasticsearch: 7.0.0 rc1 - 7.0.1, 7.1.0 - 7.17.12, 7.2.0 - 7.2.1, 7.3.0 - 7.3.2, 7.4.0 - 7.4.2, 7.5.0 - 7.5.2, 7.6.0 - 7.6.2, 7.7.0 - 7.7.1, 7.8.0 - 7.8.1, 7.9.0 - 7.9.3, 8.0.0 - 8.0.1, 8.1.0 - 8.1.3, 8.2.0 - 8.2.3, 8.3.0 - 8.3.3, 8.4.0, 8.4.1, 8.4.2, 8.4.3, 8.5.0, 8.5.1, 8.5.2, 8.5.3, 8.6.0, 8.6.1, 8.6.2, 8.7.0, 8.7.1, 8.8.0, 8.8.1, 8.8.2

Elastic Cloud Enterprise: 2.0.0 - 2.13.3, 3.0.0 - 3.6.0

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External links
https://www.elastic.co/community/security#ESA-2023-13

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Q & A

Can this vulnerability be exploited remotely?

Yes. This vulnerability can be exploited by a remote non-authenticated attacker via the Internet.

Is there known malware, which exploits this vulnerability?

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