CVE-2021-31921

CVE Details

Release Date:	2021-06-02
Impact:	None	What is this?

Description

Istio before 1.8.6 and 1.9.x before 1.9.5 contains a remotely exploitable vulnerability where an external client can access unexpected services in the cluster, bypassing authorization checks, when a gateway is configured with AUTO_PASSTHROUGH routing configuration.

See more information about CVE-2021-31921 from MITRE CVE dictionary and NIST NVD

NOTE: The following CVSS metrics and score provided are preliminary and subject to review.

CVSS v3 metrics

Base Score:	9.8
Vector String:	CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
Version:	3.0
Attack Vector:	Network
Attack Complexity:	Low
Privileges Required:	None
User Interaction:	None
Scope:	Unchanged
Confidentiality Impact:	High
Integrity Impact:	High
Availability Impact:	High

Errata information

Platform	Errata	Release Date
Oracle Linux version 7 (istio)	ELSA-2021-9397	2021-08-06
Oracle Linux version 7 (istio)	ELSA-2021-9399	2021-08-06
Oracle Linux version 7 (kubernetes)	ELSA-2021-9397	2021-08-06
Oracle Linux version 7 (kubernetes)	ELSA-2021-9399	2021-08-06
Oracle Linux version 7 (olcne)	ELSA-2021-9397	2021-08-06
Oracle Linux version 7 (olcne)	ELSA-2021-9399	2021-08-06
Oracle Linux version 8 (istio)	ELSA-2021-9396	2021-08-06
Oracle Linux version 8 (istio)	ELSA-2021-9398	2021-08-06
Oracle Linux version 8 (kubernetes)	ELSA-2021-9396	2021-08-06
Oracle Linux version 8 (kubernetes)	ELSA-2021-9398	2021-08-06
Oracle Linux version 8 (olcne)	ELSA-2021-9396	2021-08-06
Oracle Linux version 8 (olcne)	ELSA-2021-9398	2021-08-06