National Vulnerability Database

National Vulnerability Database

National Vulnerability
Database

CVE-2020-8843 Detail

Current Description

An issue was discovered in Istio 1.3 through 1.3.6. Under certain circumstances, it is possible to bypass a specifically configured Mixer policy. Istio-proxy accepts the x-istio-attributes header at ingress that can be used to affect policy decisions when Mixer policy selectively applies to a source equal to ingress. To exploit this vulnerability, someone has to encode a source.uid in this header. This feature is disabled by default in Istio 1.3 and 1.4.

Source:  MITRE
View Analysis Description

Severity



CVSS 3.x Severity and Metrics:

NIST CVSS score
NIST: NVD
Base Score: 7.4 HIGH
Vector:  CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:N

References to Advisories, Solutions, and Tools

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Hyperlink Resource
https://github.com/istio/istio/commits/master Patch
https://istio.io/news/security/ Vendor Advisory
https://istio.io/news/security/istio-security-2020-002/ Vendor Advisory

Weakness Enumeration

CWE-ID CWE Name Source
CWE-20 Improper Input Validation NIST  

Known Affected Software Configurations Switch to CPE 2.2

Configuration 1 ( hide )
 cpe:2.3:a:istio:istio:*:*:*:*:*:*:*:*
     Show Matching CPE(s)
From (including)
1.3.0
Up to (including)
1.3.6


Change History

1 change record found - show changes

Quick Info

CVE Dictionary Entry:
CVE-2020-8843
NVD Published Date:
02/14/2020
NVD Last Modified:
02/19/2020