Vulnerability Details : CVE-2020-8595
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.
Vulnerability category: BypassGain privilege
Products affected by CVE-2020-8595
- cpe:2.3:a:redhat:openshift_service_mesh:1.0:*:*:*:*:*:*:*
- cpe:2.3:a:istio:istio:*:*:*:*:*:*:*:*
- cpe:2.3:a:istio:istio:*:*:*:*:*:*:*:*
Exploit prediction scoring system (EPSS) score for CVE-2020-8595
1.43%
Probability of exploitation activity in the next 30 days
EPSS Score History
~ 80 %
Percentile, the proportion of vulnerabilities that are scored at or less
CVSS scores for CVE-2020-8595
Base Score | Base Severity | CVSS Vector | Exploitability Score | Impact Score | Score Source | First Seen |
---|---|---|---|---|---|---|
7.5
|
HIGH | AV:N/AC:L/Au:N/C:P/I:P/A:P |
10.0
|
6.4
|
NIST | |
7.3
|
HIGH | CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:L/A:L |
3.9
|
3.4
|
NIST |
CWE ids for CVE-2020-8595
-
When an actor claims to have a given identity, the product does not prove or insufficiently proves that the claim is correct.Assigned by: nvd@nist.gov (Primary)
References for CVE-2020-8595
-
https://istio.io/news/security/istio-security-2020-001/
Istio / ISTIO-SECURITY-2020-001Patch;Vendor Advisory
-
https://access.redhat.com/security/cve/cve-2020-8595
Red Hat Customer PortalMitigation;Third Party Advisory
-
https://bugzilla.redhat.com/show_bug.cgi?id=CVE-2020-8595
1798247 – (CVE-2020-8595) CVE-2020-8595 istio: unauthorised access to JWT protected HTTP pathIssue Tracking;Mitigation;Third Party Advisory
-
https://github.com/istio/istio/commits/master
Commits · istio/istio · GitHubPatch
-
https://access.redhat.com/errata/RHSA-2020:0477
RHSA-2020:0477 - Security Advisory - Red Hat Customer PortalThird Party Advisory
-
https://istio.io/news/security/
Istio / Security BulletinsVendor Advisory
Jump to