IBM Cloud Private update for Elasticsearch



Risk Medium
Patch available YES
Number of vulnerabilities 1
CVE-ID CVE-2021-22138
CWE-ID CWE-295
Exploitation vector Network
Public exploit N/A
Vulnerable software
 IBM Cloud Private
Universal components / Libraries / Software for developers

Vendor IBM Corporation

Security Bulletin

This security bulletin contains one medium risk vulnerability.

1) Improper Certificate Validation

EUVDB-ID: #VU51713

Risk: Medium

CVSSv4.0: 1.2 [CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:A/VC:L/VI:L/VA:N/SC:N/SI:N/SA:N/E:U/U:Green]

CVE-ID: CVE-2021-22138

CWE-ID: CWE-295 - Improper Certificate Validation

Exploit availability: No

Description

The vulnerability allows a remote attacker to perform MitM attack.

The vulnerability exists due to improper TLS certificate validation in the monitoring feature of Logstash. When specifying a trusted server CA certificate Logstash does not properly verify the certificate returned by the monitoring server. A remote attacker can preform a Man-in-the-Middle attack.

Mitigation

Install update from vendor's website.

Vulnerable software versions

IBM Cloud Private: 3.1.0 - 3.2.2 CD

CPE2.3 External links

https://www.ibm.com/blogs/psirt/security-bulletin-vulnerability-in-elasticsearch-affects-ibm-cloud-private-cve-2021-22138-2/
https://www.ibm.com/support/pages/node/6538160


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.



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