CVE-2020-8843

HIGH Year: 2020
CVSS v3 Score
7.4
High
CVSS v2 Score
5.8
Medium
Weakness Type
CWE-20
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Vulnerability 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.

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