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CVE-2020-16844

Date: October 1, 2020

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.

Language: Go

Severity Score

Related Resources (11)

https://github.com/istio/istio/releases/tag/1.5.9
https://github.com/istio/istio/releases/tag/1.6.8
https://istio.io/latest/news/security/istio-security-2020-009/
https://istio.io/latest/news/security/istio-security-2020-009
https://github.com/istio/istio/commit/72d2e135374f421b656d6f1a21f474db46134ace
https://nvd.nist.gov/vuln/detail/CVE-2020-16844
https://github.com/istio/istio/commit/4c73414556b83f0e75c1b3a0a89a23103a71573c
https://istio.io/latest/news/releases/1.6.x/announcing-1.6.8
https://github.com/istio/istio/releases
https://istio.io/latest/news/releases/1.5.x/announcing-1.5.9
https://www.mend.io/vulnerability-database/CVE-2020-16844

Severity Score

Weakness Type (CWE)

Improper Access Control

CWE-284

Insufficient Information

NVD-CWE-noinfo

CVSS v3.1

Base Score:
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

CVSS v2

Base Score:
Access Vector (AV): NETWORK
Access Complexity (AC): MEDIUM
Authentication (AU): SINGLE
Confidentiality (C): PARTIAL
Integrity (I): PARTIAL
Availability (A): NONE
Additional information:

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