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.
Advisories
Source ID Title
EUVD EUVD EUVD-2020-29685 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.
Fixes

Solution

No solution given by the vendor.


Workaround

No workaround given by the vendor.

History

No history.

cve-icon MITRE

Status: PUBLISHED

Assigner: mitre

Published:

Updated: 2024-08-04T10:12:10.957Z

Reserved: 2020-02-10T00:00:00

Link: CVE-2020-8843

cve-icon Vulnrichment

No data.

cve-icon NVD

Status : Modified

Published: 2020-02-14T19:15:10.683

Modified: 2024-11-21T05:39:33.013

Link: CVE-2020-8843

cve-icon Redhat

No data.

cve-icon OpenCVE Enrichment

No data.