CVE-2020-16844

Severity CVSS v4.0:

Pending analysis

Type:

Unavailable / Other

Publication date:

01/10/2020

Last modified:

15/10/2020

Description

In Istio 1.5.0 though 1.5.8 and Istio 1.6.0 through 1.6.7, when users specify an AuthorizationPolicy resource with DENY actions using wildcard suffixes (e.g. *-some-suffix) for source principals or namespace fields, callers will never be denied access, bypassing the intended policy.

Impact

Vector 3.x

CVSS:3.1/AV:N/AC:H/PR:L/UI:N/S:U/C:H/I:H/A:N CVSS v3.1 Severity and Metrics:

Base Score: 6.80 MEDIUM
Vector: CVSS:3.1/AV:N/AC:H/PR:L/UI:N/S:U/C:H/I:H/A:N

Attack Vector (AV): Network
Attack Complexity (AC): High
Privileges Required (PR): Low
User Interaction (UI): None
Scope (S): Unchanged
Confidentiality (C): High
Integrity (I): High
Availability (A): None

Base Score 3.x

6.80

Severity 3.x

MEDIUM

Vector 2.0

AV:N/AC:M/Au:S/C:P/I:P/A:N CVSS v2.0 Severity and Metrics:

Base Score: 4.90 MEDIUM
Vector: AV:N/AC:M/Au:S/C:P/I:P/A:N

Attack Vector (AV): Network
Attack Complexity (AC): Medium
Authentication (Au): Single
Confidentiality (C): Physical
Integrity (I): Physical
Availability (A): None

Base Score 2.0

4.90

Severity 2.0

MEDIUM

Vulnerable products and versions

CPE	From	Up to
cpe:2.3:a:istio:istio::::::::	1.5.0 (including)	1.5.8 (including)
cpe:2.3:a:istio:istio::::::::	1.6.0 (including)	1.6.7 (including)

To consult the complete list of CPE names with products and versions, see this page

CVE-2020-16844

Description

Impact

Vulnerable products and versions

References to Advisories, Solutions, and Tools