Istio versions 1.2.10 (End of Life) and prior, 1.3 through 1.3.7, and 1.4 through 1.4.3 allows authentication bypass. The Authentication Policy exact-path matching logic can allow unauthorized access to HTTP paths even if they are configured to be only accessed after presenting a valid JWT token. For example, an attacker can add a ? or # character to a URI that would otherwise satisfy an exact-path match.
When an actor claims to have a given identity, the product does not prove or insufficiently proves that the claim is correct.
| Link | Tags |
|---|---|
| https://github.com/istio/istio/commits/master | patch |
| https://istio.io/news/security/ | vendor advisory |
| https://access.redhat.com/errata/RHSA-2020:0477 | third party advisory vendor advisory |
| https://access.redhat.com/security/cve/cve-2020-8595 | mitigation third party advisory |
| https://istio.io/news/security/istio-security-2020-001/ | patch vendor advisory |
| https://bugzilla.redhat.com/show_bug.cgi?id=CVE-2020-8595 | mitigation third party advisory issue tracking |