Description
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.
References (6)
Core 6
Core References
Vendor Advisory x_refsource_misc
https://istio.io/news/security/
Third Party Advisory vendor-advisory
x_refsource_redhat
https://access.redhat.com/errata/RHSA-2020:0477
Mitigation, Third Party Advisory x_refsource_confirm
https://access.redhat.com/security/cve/cve-2020-8595
Patch, Vendor Advisory x_refsource_confirm
https://istio.io/news/security/istio-security-2020-001/
Issue Tracking, Mitigation, Third Party Advisory x_refsource_misc
https://bugzilla.redhat.com/show_bug.cgi?id=CVE-2020-8595
Patch x_refsource_misc
https://github.com/istio/istio/commits/master
Scores
CVSS v3
7.3
EPSS
0.0106
EPSS Percentile
77.9%
Attack Vector
NETWORK
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:L/A:L
Details
CWE
CWE-287
Status
published
Products (2)
istio/istio
1.3 - 1.3.7
redhat/openshift_service_mesh
1.0
Published
Feb 12, 2020
Tracked Since
Feb 18, 2026