Description
In Istio 1.5.0 though 1.5.8 and Istio 1.6.0 through 1.6.7, when users specify an AuthorizationPolicy resource with DENY actions using wildcard suffixes (e.g. *-some-suffix) for source principals or namespace fields, callers will never be denied access, bypassing the intended policy.
Fixed in Linux distributions
Distributions backport fixes, so the version that fixes this vulnerability differs per release — upgrade to at least the version shown. From the distributions' security trackers and advisories.
Red Hat
Security tracker ↗| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| Red Hat Service Mesh 1 | servicemesh +8 | 1.1.7-1.el8 | RHSA-2020:3425 |
Affected packages
| Ecosystem | Package | Affected | Fixed | Record |
|---|---|---|---|---|
| Go | istio.io/istio | >= 1.5.0, < 1.5.9 | 1.5.9 | GHSA-82mm-ffjr-h86c |
| Go | istio.io/istio | >= 1.6.0, < 1.6.8 | 1.6.8 | GHSA-82mm-ffjr-h86c |
Advisories 1
- RHSA-2020:3425 Red Hat Security Advisory: Red Hat OpenShift Service Mesh 1.1 security update Red Hat Security Advisories (RHSA) · Mar 18, 2026