Authentication Bypass in Search Guard Kibana Plugin by Authenticated Users
CVE-2019-13423

8.8HIGH

Key Information:

Vendor

Floragunn

Status
Search Guard Kibana Plugin
Vendor
CVE Published:
23 August 2019

What is CVE-2019-13423?

The Search Guard Kibana Plugin, specifically versions prior to 5.6.8-7 and 6.x.y-12, contains a vulnerability that allows an authenticated user to impersonate the kibanaserver user if specific conditions are met. This occurs when Kibana is set up to utilize Single-Sign-On (SSO) authentication with methods like Kerberos, JWT, Proxy, or Client Certificate, while simultaneously using HTTP Basic for the kibanaserver user. This misconfiguration could permit unauthorized access and actions within Kibana’s environment.

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Affected Version(s)

Search Guard Kibana Plugin < 5.6.8-7

Search Guard Kibana Plugin < 6.x.y-12

References

https://search-guard.com/cve-advisory/
x_refsource_MISC
https://docs.search-guard.com/6.x-25/changelog-kibana-6.x-12
x_refsource_CONFIRM

CVSS V3.1

Score:
8.8
Severity:
HIGH
Confidentiality:
High
Integrity:
High
Availability:
High
Attack Vector:
Network
Attack Complexity:
Low
Privileges Required:
Low
User Interaction:
None
Scope:
Unchanged

Timeline

  • Vulnerability published

  • Vulnerability Reserved

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