Unrated severityNVD Advisory· Published Feb 14, 2020· Updated Aug 4, 2024
CVE-2020-8843
CVE-2020-8843
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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Affected products
2- Istio/Istiodescription
Patches
Vulnerability mechanics
References
3- github.com/istio/istio/commits/mastermitrex_refsource_MISC
- istio.io/news/security/mitrex_refsource_MISC
- istio.io/news/security/istio-security-2020-002/mitrex_refsource_CONFIRM
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