Vulnerability 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.
CVSS Score
HIGH
Affected Products
| Vendor | Product | Versions |
|---|---|---|
| Istio | Istio | >= 1.3, <= 1.3.7 |
| Redhat | Openshift Service Mesh | 1.0 |
| Redhat | Enterprise Linux | 8.0 |
Related Weaknesses (CWE)
References
- https://access.redhat.com/errata/RHSA-2020:0477Third Party Advisory
- https://access.redhat.com/security/cve/cve-2020-8595MitigationThird Party Advisory
- https://bugzilla.redhat.com/show_bug.cgi?id=CVE-2020-8595Issue TrackingMitigationThird Party Advisory
- https://github.com/istio/istio/commits/masterPatch
- https://istio.io/news/security/Vendor Advisory
- https://istio.io/news/security/istio-security-2020-001/PatchVendor Advisory
- https://access.redhat.com/errata/RHSA-2020:0477Third Party Advisory
- https://access.redhat.com/security/cve/cve-2020-8595MitigationThird Party Advisory
- https://bugzilla.redhat.com/show_bug.cgi?id=CVE-2020-8595Issue TrackingMitigationThird Party Advisory
- https://github.com/istio/istio/commits/masterPatch
- https://istio.io/news/security/Vendor Advisory
- https://istio.io/news/security/istio-security-2020-001/PatchVendor Advisory
FAQ
What is CVE-2020-8595?
CVE-2020-8595 is a vulnerability with a CVSS score of 7.3 (HIGH). 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 ...
How severe is CVE-2020-8595?
CVE-2020-8595 has been rated HIGH with a CVSS base score of 7.3/10. Review the CVSS metrics above for detailed severity breakdown.
Is there a patch for CVE-2020-8595?
Check the references section above for vendor advisories and patch information. Affected products include: Istio Istio, Redhat Openshift Service Mesh, Redhat Enterprise Linux.