Information disclosure in Elastic Logstash

1) Information disclosure

EUVDB-ID: #VU18087

Risk: Low

CVSSv3.1: 2.9 [CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:L/I:N/A:N/E:U/RL:O/RC:C]

CVE-ID: CVE-2019-7612

CWE-ID: CWE-200 - Information exposure

Exploit availability: No

Description

The vulnerability allows a local user to gain access to potentially sensitive information.

The vulnerability exists due to the way Logstash logs malformed URLs. If the malformed URL is specified as part of the Logstash configuration, the application will log credentials for the URL as part of the error message. A local user can view contents of err logs and gain unauthorized access to credentials that belong to other application users.

Mitigation

Install updates from vendor's website.

Vulnerable software versions

Logstash: 5.6.0 - 6.6.0

External links

http://discuss.elastic.co/t/elastic-stack-6-6-1-and-5-6-15-security-update/169077
http://www.elastic.co/community/security

Q & A

Can this vulnerability be exploited remotely?

No. This vulnerability can be exploited locally. The attacker should have authentication credentials and successfully authenticate on the system.

Is there known malware, which exploits this vulnerability?

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