CVE-2021-39155

mediumPriorität · verfolgen · 30OT-Risiko · erhöhtEPSS 0.013 · 69. PerzentilEUUS

grimoire priorityP3 · Track

Exploitable?

—

no known exploitation

Likely / severe?

1.25% (69th) EPSS

CVSS 5 · medium

Is it mine?

64 products

Prüfe deine Angriffsfläche

Who says so?

5 sources

cnnvd · enisa_euvd · nvd · osv

EPSS · bewertet 2026-10-27

Istio is an open source platform for providing a uniform way to integrate microservices, manage traffic flow across microservices, enforce policies and aggregate telemetry data. According to [RFC 4343](https://datatracker.ietf.org/doc/html/rfc4343), Istio authorization policy should compare the hostname in the HTTP Host header in a case insensitive way, but currently the comparison is case sensitive. The proxy will route the request hostname in a case-insensitive way which means the authorization policy could be bypassed. As an example, the user may have an authorization policy that rejects request with hostname "httpbin.foo" for some source IPs, but the attacker can bypass this by sending the request with hostname "Httpbin.Foo". Patches are available in Istio 1.11.1, Istio 1.10.4 and Istio 1.9.8. As a work around a Lua filter may be written to normalize Host header before the authorization check. This is similar to the Path normalization presented in the [Security Best Practices](https://istio.io/latest/docs/ops/best-practices/security/#case-normalization) guide.

Behebungen

Hersteller-Fix, Mitigation oder Workaround, wie von den Quellen veröffentlicht.

Ein Hersteller-Fix ist verfügbar.

Behobenservicemesh-0:2.0.7-3.el8.ppc64le as a component of OpenShift Service Mesh 2.0redhat_csaf
The OpenShift Service Mesh Release Notes provide information on the features and known issues: https://docs.openshift.com/container-platform/latest/service_mesh/v2x/servicemesh-release-notes.html
https://access.redhat.com/errata/RHSA-2021:3272
Behobenservicemesh-0:2.0.7-3.el8.s390x as a component of OpenShift Service Mesh 2.0redhat_csaf
The OpenShift Service Mesh Release Notes provide information on the features and known issues: https://docs.openshift.com/container-platform/latest/service_mesh/v2x/servicemesh-release-notes.html
https://access.redhat.com/errata/RHSA-2021:3272
Behobenservicemesh-0:2.0.7-3.el8.src as a component of OpenShift Service Mesh 2.0redhat_csaf
The OpenShift Service Mesh Release Notes provide information on the features and known issues: https://docs.openshift.com/container-platform/latest/service_mesh/v2x/servicemesh-release-notes.html
https://access.redhat.com/errata/RHSA-2021:3272
Behobenservicemesh-0:2.0.7-3.el8.x86_64 as a component of OpenShift Service Mesh 2.0redhat_csaf
The OpenShift Service Mesh Release Notes provide information on the features and known issues: https://docs.openshift.com/container-platform/latest/service_mesh/v2x/servicemesh-release-notes.html
https://access.redhat.com/errata/RHSA-2021:3272
Behobenservicemesh-istioctl-0:2.0.7-3.el8.ppc64le as a component of OpenShift Service Mesh 2.0redhat_csaf
The OpenShift Service Mesh Release Notes provide information on the features and known issues: https://docs.openshift.com/container-platform/latest/service_mesh/v2x/servicemesh-release-notes.html
https://access.redhat.com/errata/RHSA-2021:3272
Behobenservicemesh-istioctl-0:2.0.7-3.el8.s390x as a component of OpenShift Service Mesh 2.0redhat_csaf
The OpenShift Service Mesh Release Notes provide information on the features and known issues: https://docs.openshift.com/container-platform/latest/service_mesh/v2x/servicemesh-release-notes.html
https://access.redhat.com/errata/RHSA-2021:3272
Behobenservicemesh-istioctl-0:2.0.7-3.el8.x86_64 as a component of OpenShift Service Mesh 2.0redhat_csaf
The OpenShift Service Mesh Release Notes provide information on the features and known issues: https://docs.openshift.com/container-platform/latest/service_mesh/v2x/servicemesh-release-notes.html
https://access.redhat.com/errata/RHSA-2021:3272
Behobenservicemesh-mixc-0:2.0.7-3.el8.ppc64le as a component of OpenShift Service Mesh 2.0redhat_csaf
The OpenShift Service Mesh Release Notes provide information on the features and known issues: https://docs.openshift.com/container-platform/latest/service_mesh/v2x/servicemesh-release-notes.html
https://access.redhat.com/errata/RHSA-2021:3272
Behobenservicemesh-mixc-0:2.0.7-3.el8.s390x as a component of OpenShift Service Mesh 2.0redhat_csaf
The OpenShift Service Mesh Release Notes provide information on the features and known issues: https://docs.openshift.com/container-platform/latest/service_mesh/v2x/servicemesh-release-notes.html
https://access.redhat.com/errata/RHSA-2021:3272
Behobenservicemesh-mixc-0:2.0.7-3.el8.x86_64 as a component of OpenShift Service Mesh 2.0redhat_csaf
The OpenShift Service Mesh Release Notes provide information on the features and known issues: https://docs.openshift.com/container-platform/latest/service_mesh/v2x/servicemesh-release-notes.html
https://access.redhat.com/errata/RHSA-2021:3272
Behobenservicemesh-mixs-0:2.0.7-3.el8.ppc64le as a component of OpenShift Service Mesh 2.0redhat_csaf
The OpenShift Service Mesh Release Notes provide information on the features and known issues: https://docs.openshift.com/container-platform/latest/service_mesh/v2x/servicemesh-release-notes.html
https://access.redhat.com/errata/RHSA-2021:3272
Behobenservicemesh-mixs-0:2.0.7-3.el8.s390x as a component of OpenShift Service Mesh 2.0redhat_csaf
The OpenShift Service Mesh Release Notes provide information on the features and known issues: https://docs.openshift.com/container-platform/latest/service_mesh/v2x/servicemesh-release-notes.html
https://access.redhat.com/errata/RHSA-2021:3272
Behobenservicemesh-mixs-0:2.0.7-3.el8.x86_64 as a component of OpenShift Service Mesh 2.0redhat_csaf
The OpenShift Service Mesh Release Notes provide information on the features and known issues: https://docs.openshift.com/container-platform/latest/service_mesh/v2x/servicemesh-release-notes.html
https://access.redhat.com/errata/RHSA-2021:3272
Behobenservicemesh-pilot-agent-0:2.0.7-3.el8.ppc64le as a component of OpenShift Service Mesh 2.0redhat_csaf
The OpenShift Service Mesh Release Notes provide information on the features and known issues: https://docs.openshift.com/container-platform/latest/service_mesh/v2x/servicemesh-release-notes.html
https://access.redhat.com/errata/RHSA-2021:3272
Behobenservicemesh-pilot-agent-0:2.0.7-3.el8.s390x as a component of OpenShift Service Mesh 2.0redhat_csaf
The OpenShift Service Mesh Release Notes provide information on the features and known issues: https://docs.openshift.com/container-platform/latest/service_mesh/v2x/servicemesh-release-notes.html
https://access.redhat.com/errata/RHSA-2021:3272
Behobenservicemesh-pilot-agent-0:2.0.7-3.el8.x86_64 as a component of OpenShift Service Mesh 2.0redhat_csaf
The OpenShift Service Mesh Release Notes provide information on the features and known issues: https://docs.openshift.com/container-platform/latest/service_mesh/v2x/servicemesh-release-notes.html
https://access.redhat.com/errata/RHSA-2021:3272
Behobenservicemesh-pilot-discovery-0:2.0.7-3.el8.ppc64le as a component of OpenShift Service Mesh 2.0redhat_csaf
The OpenShift Service Mesh Release Notes provide information on the features and known issues: https://docs.openshift.com/container-platform/latest/service_mesh/v2x/servicemesh-release-notes.html
https://access.redhat.com/errata/RHSA-2021:3272
Behobenservicemesh-pilot-discovery-0:2.0.7-3.el8.s390x as a component of OpenShift Service Mesh 2.0redhat_csaf
The OpenShift Service Mesh Release Notes provide information on the features and known issues: https://docs.openshift.com/container-platform/latest/service_mesh/v2x/servicemesh-release-notes.html
https://access.redhat.com/errata/RHSA-2021:3272
Behobenservicemesh-pilot-discovery-0:2.0.7-3.el8.x86_64 as a component of OpenShift Service Mesh 2.0redhat_csaf
The OpenShift Service Mesh Release Notes provide information on the features and known issues: https://docs.openshift.com/container-platform/latest/service_mesh/v2x/servicemesh-release-notes.html
https://access.redhat.com/errata/RHSA-2021:3272
Behobenservicemesh-0:1.1.17-3.el8.ppc64le as a component of OpenShift Service Mesh 1.1redhat_csaf
The OpenShift Service Mesh Release Notes provide information on the features and known issues: https://docs.openshift.com/container-platform/4.8/service_mesh/v1x/servicemesh-release-notes.html
https://access.redhat.com/errata/RHSA-2021:3273
Behobenservicemesh-0:1.1.17-3.el8.s390x as a component of OpenShift Service Mesh 1.1redhat_csaf
The OpenShift Service Mesh Release Notes provide information on the features and known issues: https://docs.openshift.com/container-platform/4.8/service_mesh/v1x/servicemesh-release-notes.html
https://access.redhat.com/errata/RHSA-2021:3273
Behobenservicemesh-0:1.1.17-3.el8.src as a component of OpenShift Service Mesh 1.1redhat_csaf
The OpenShift Service Mesh Release Notes provide information on the features and known issues: https://docs.openshift.com/container-platform/4.8/service_mesh/v1x/servicemesh-release-notes.html
https://access.redhat.com/errata/RHSA-2021:3273
Behobenservicemesh-0:1.1.17-3.el8.x86_64 as a component of OpenShift Service Mesh 1.1redhat_csaf
The OpenShift Service Mesh Release Notes provide information on the features and known issues: https://docs.openshift.com/container-platform/4.8/service_mesh/v1x/servicemesh-release-notes.html
https://access.redhat.com/errata/RHSA-2021:3273
Behobenservicemesh-citadel-0:1.1.17-3.el8.ppc64le as a component of OpenShift Service Mesh 1.1redhat_csaf
The OpenShift Service Mesh Release Notes provide information on the features and known issues: https://docs.openshift.com/container-platform/4.8/service_mesh/v1x/servicemesh-release-notes.html
https://access.redhat.com/errata/RHSA-2021:3273
Behobenservicemesh-citadel-0:1.1.17-3.el8.s390x as a component of OpenShift Service Mesh 1.1redhat_csaf
The OpenShift Service Mesh Release Notes provide information on the features and known issues: https://docs.openshift.com/container-platform/4.8/service_mesh/v1x/servicemesh-release-notes.html
https://access.redhat.com/errata/RHSA-2021:3273
Behobenservicemesh-citadel-0:1.1.17-3.el8.x86_64 as a component of OpenShift Service Mesh 1.1redhat_csaf
The OpenShift Service Mesh Release Notes provide information on the features and known issues: https://docs.openshift.com/container-platform/4.8/service_mesh/v1x/servicemesh-release-notes.html
https://access.redhat.com/errata/RHSA-2021:3273
Behobenservicemesh-galley-0:1.1.17-3.el8.ppc64le as a component of OpenShift Service Mesh 1.1redhat_csaf
The OpenShift Service Mesh Release Notes provide information on the features and known issues: https://docs.openshift.com/container-platform/4.8/service_mesh/v1x/servicemesh-release-notes.html
https://access.redhat.com/errata/RHSA-2021:3273
Behobenservicemesh-galley-0:1.1.17-3.el8.s390x as a component of OpenShift Service Mesh 1.1redhat_csaf
The OpenShift Service Mesh Release Notes provide information on the features and known issues: https://docs.openshift.com/container-platform/4.8/service_mesh/v1x/servicemesh-release-notes.html
https://access.redhat.com/errata/RHSA-2021:3273
Behobenservicemesh-galley-0:1.1.17-3.el8.x86_64 as a component of OpenShift Service Mesh 1.1redhat_csaf
The OpenShift Service Mesh Release Notes provide information on the features and known issues: https://docs.openshift.com/container-platform/4.8/service_mesh/v1x/servicemesh-release-notes.html
https://access.redhat.com/errata/RHSA-2021:3273
Behobenservicemesh-istioctl-0:1.1.17-3.el8.ppc64le as a component of OpenShift Service Mesh 1.1redhat_csaf
The OpenShift Service Mesh Release Notes provide information on the features and known issues: https://docs.openshift.com/container-platform/4.8/service_mesh/v1x/servicemesh-release-notes.html
https://access.redhat.com/errata/RHSA-2021:3273
Behobenservicemesh-istioctl-0:1.1.17-3.el8.s390x as a component of OpenShift Service Mesh 1.1redhat_csaf
The OpenShift Service Mesh Release Notes provide information on the features and known issues: https://docs.openshift.com/container-platform/4.8/service_mesh/v1x/servicemesh-release-notes.html
https://access.redhat.com/errata/RHSA-2021:3273
Behobenservicemesh-istioctl-0:1.1.17-3.el8.x86_64 as a component of OpenShift Service Mesh 1.1redhat_csaf
The OpenShift Service Mesh Release Notes provide information on the features and known issues: https://docs.openshift.com/container-platform/4.8/service_mesh/v1x/servicemesh-release-notes.html
https://access.redhat.com/errata/RHSA-2021:3273
Behobenservicemesh-mixc-0:1.1.17-3.el8.ppc64le as a component of OpenShift Service Mesh 1.1redhat_csaf
The OpenShift Service Mesh Release Notes provide information on the features and known issues: https://docs.openshift.com/container-platform/4.8/service_mesh/v1x/servicemesh-release-notes.html
https://access.redhat.com/errata/RHSA-2021:3273
Behobenservicemesh-mixc-0:1.1.17-3.el8.s390x as a component of OpenShift Service Mesh 1.1redhat_csaf
The OpenShift Service Mesh Release Notes provide information on the features and known issues: https://docs.openshift.com/container-platform/4.8/service_mesh/v1x/servicemesh-release-notes.html
https://access.redhat.com/errata/RHSA-2021:3273
Behobenservicemesh-mixc-0:1.1.17-3.el8.x86_64 as a component of OpenShift Service Mesh 1.1redhat_csaf
The OpenShift Service Mesh Release Notes provide information on the features and known issues: https://docs.openshift.com/container-platform/4.8/service_mesh/v1x/servicemesh-release-notes.html
https://access.redhat.com/errata/RHSA-2021:3273
Behobenservicemesh-mixs-0:1.1.17-3.el8.ppc64le as a component of OpenShift Service Mesh 1.1redhat_csaf
The OpenShift Service Mesh Release Notes provide information on the features and known issues: https://docs.openshift.com/container-platform/4.8/service_mesh/v1x/servicemesh-release-notes.html
https://access.redhat.com/errata/RHSA-2021:3273
Behobenservicemesh-mixs-0:1.1.17-3.el8.s390x as a component of OpenShift Service Mesh 1.1redhat_csaf
The OpenShift Service Mesh Release Notes provide information on the features and known issues: https://docs.openshift.com/container-platform/4.8/service_mesh/v1x/servicemesh-release-notes.html
https://access.redhat.com/errata/RHSA-2021:3273
Behobenservicemesh-mixs-0:1.1.17-3.el8.x86_64 as a component of OpenShift Service Mesh 1.1redhat_csaf
The OpenShift Service Mesh Release Notes provide information on the features and known issues: https://docs.openshift.com/container-platform/4.8/service_mesh/v1x/servicemesh-release-notes.html
https://access.redhat.com/errata/RHSA-2021:3273
Behobenservicemesh-pilot-agent-0:1.1.17-3.el8.ppc64le as a component of OpenShift Service Mesh 1.1redhat_csaf
The OpenShift Service Mesh Release Notes provide information on the features and known issues: https://docs.openshift.com/container-platform/4.8/service_mesh/v1x/servicemesh-release-notes.html
https://access.redhat.com/errata/RHSA-2021:3273
Behobenservicemesh-pilot-agent-0:1.1.17-3.el8.s390x as a component of OpenShift Service Mesh 1.1redhat_csaf
The OpenShift Service Mesh Release Notes provide information on the features and known issues: https://docs.openshift.com/container-platform/4.8/service_mesh/v1x/servicemesh-release-notes.html
https://access.redhat.com/errata/RHSA-2021:3273
Behobenservicemesh-pilot-agent-0:1.1.17-3.el8.x86_64 as a component of OpenShift Service Mesh 1.1redhat_csaf
The OpenShift Service Mesh Release Notes provide information on the features and known issues: https://docs.openshift.com/container-platform/4.8/service_mesh/v1x/servicemesh-release-notes.html
https://access.redhat.com/errata/RHSA-2021:3273
Behobenservicemesh-pilot-discovery-0:1.1.17-3.el8.ppc64le as a component of OpenShift Service Mesh 1.1redhat_csaf
The OpenShift Service Mesh Release Notes provide information on the features and known issues: https://docs.openshift.com/container-platform/4.8/service_mesh/v1x/servicemesh-release-notes.html
https://access.redhat.com/errata/RHSA-2021:3273
Behobenservicemesh-pilot-discovery-0:1.1.17-3.el8.s390x as a component of OpenShift Service Mesh 1.1redhat_csaf
The OpenShift Service Mesh Release Notes provide information on the features and known issues: https://docs.openshift.com/container-platform/4.8/service_mesh/v1x/servicemesh-release-notes.html
https://access.redhat.com/errata/RHSA-2021:3273
Behobenservicemesh-pilot-discovery-0:1.1.17-3.el8.x86_64 as a component of OpenShift Service Mesh 1.1redhat_csaf
The OpenShift Service Mesh Release Notes provide information on the features and known issues: https://docs.openshift.com/container-platform/4.8/service_mesh/v1x/servicemesh-release-notes.html
https://access.redhat.com/errata/RHSA-2021:3273
Behobenservicemesh-sidecar-injector-0:1.1.17-3.el8.ppc64le as a component of OpenShift Service Mesh 1.1redhat_csaf
The OpenShift Service Mesh Release Notes provide information on the features and known issues: https://docs.openshift.com/container-platform/4.8/service_mesh/v1x/servicemesh-release-notes.html
https://access.redhat.com/errata/RHSA-2021:3273
Behobenservicemesh-sidecar-injector-0:1.1.17-3.el8.s390x as a component of OpenShift Service Mesh 1.1redhat_csaf
The OpenShift Service Mesh Release Notes provide information on the features and known issues: https://docs.openshift.com/container-platform/4.8/service_mesh/v1x/servicemesh-release-notes.html
https://access.redhat.com/errata/RHSA-2021:3273
Behobenservicemesh-sidecar-injector-0:1.1.17-3.el8.x86_64 as a component of OpenShift Service Mesh 1.1redhat_csaf
The OpenShift Service Mesh Release Notes provide information on the features and known issues: https://docs.openshift.com/container-platform/4.8/service_mesh/v1x/servicemesh-release-notes.html
https://access.redhat.com/errata/RHSA-2021:3273

cvss

Technischer Schweregrad, 0–10. Eine Zeile je Quelle.

8.3

010

Basiswert 0–10 · höher = schwerwiegender · Vektor überfahren zum Auflösen⚠ Quellen uneinig · medium–high · 5–8.3

v2.05mediumAV:N/AC:L/Au:N/C:P/I:N/A:Nprimary · NVD / NIST USAusnutzbarkeit 10 · Auswirkung 2.9

v3.17.5highCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:Nprimary · NVD / NIST USAusnutzbarkeit 3.9 · Auswirkung 3.6

v3.18.3highCVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:Lsecondary · ENISA EU

v3.18.3highCVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:Lsecondary · security-advisories@github.comAusnutzbarkeit 2.8 · Auswirkung 5.5

v3.18.3highCVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:Lsecondary · OSV

v3.16.9mediumCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N/E:Usecondary · CVSS-BT (t0sche)

v3.18.3highCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:C/C:L/I:L/A:Lsecondary · Red Hat Product Security US

schwächen

Die CWE-Schwächeklassen, zu denen dies gehört.

CWE-178USprimärCWE-863USprimärCWE-178USCWE-863US

betroffene Produkte (64)

Betroffene Produkte und Versionsbereiche.

istio istio≤ ≤ 1.9.8enisa_euvdEU
istio istio1.10.0, → 1.10.4enisa_euvdEU
istio istio1.11.0, → 1.11.1enisa_euvdEU
istio istio< 1.9.8nvdUScpe:2.3:a:istio:istio:*:*:*:*:*:*:*:*
istio istio1.10.0 → 1.10.4nvdUScpe:2.3:a:istio:istio:*:*:*:*:*:*:*:*
istio istio1.11.0 → 1.11.1nvdUScpe:2.3:a:istio:istio:*:*:*:*:*:*:*:*
Go istio.io/istio< 1.9.8osvUSpkg:golang/istio.io/istio
Go istio.io/istio1.10.0 → 1.10.4osvUSpkg:golang/istio.io/istio
Go istio.io/istio1.11.0 → 1.11.1osvUSpkg:golang/istio.io/istio
servicemesh-0:1.1.17-3.el8.ppc64le as a component of OpenShift Service Mesh 1.1alle Versionenfixedredhat_csafUS
servicemesh-0:1.1.17-3.el8.s390x as a component of OpenShift Service Mesh 1.1alle Versionenfixedredhat_csafUS
servicemesh-0:1.1.17-3.el8.src as a component of OpenShift Service Mesh 1.1alle Versionenfixedredhat_csafUS
servicemesh-0:1.1.17-3.el8.x86_64 as a component of OpenShift Service Mesh 1.1alle Versionenfixedredhat_csafUS
servicemesh-0:2.0.7-3.el8.ppc64le as a component of OpenShift Service Mesh 2.0alle Versionenfixedredhat_csafUS
servicemesh-0:2.0.7-3.el8.s390x as a component of OpenShift Service Mesh 2.0alle Versionenfixedredhat_csafUS
servicemesh-0:2.0.7-3.el8.src as a component of OpenShift Service Mesh 2.0alle Versionenfixedredhat_csafUS
servicemesh-0:2.0.7-3.el8.x86_64 as a component of OpenShift Service Mesh 2.0alle Versionenfixedredhat_csafUS
servicemesh-citadel-0:1.1.17-3.el8.ppc64le as a component of OpenShift Service Mesh 1.1alle Versionenfixedredhat_csafUS
servicemesh-citadel-0:1.1.17-3.el8.s390x as a component of OpenShift Service Mesh 1.1alle Versionenfixedredhat_csafUS
servicemesh-citadel-0:1.1.17-3.el8.x86_64 as a component of OpenShift Service Mesh 1.1alle Versionenfixedredhat_csafUS

20 von 64 angezeigt

Advisories (3)

Hersteller- und Ökosystem-Meldungen dazu.

RHSA-2021:3272Red Hat Security Advisory: Red Hat OpenShift Service Mesh 2.0.7.1 security update2021-08-25csaf · redhat_csafUS
An update for servicemesh and servicemesh-proxy is now available for OpenShift Service Mesh 2.0. Red Hat Product Security has rated this update as having a security impact of Important. A Common Vulnerability Scoring System (CVSS) base score, which gives a detailed severity rating, is available for each vulnerability from the CVE link(s) in the References section.
RHSA-2021:3273Red Hat Security Advisory: Red Hat OpenShift Service Mesh 1.1.17.1 security update2021-08-25csaf · redhat_csafUS
An update for servicemesh and servicemesh-proxy is now available for OpenShift Service Mesh 1.1. Red Hat Product Security has rated this update as having a security impact of Important. A Common Vulnerability Scoring System (CVSS) base score, which gives a detailed severity rating, is available for each vulnerability from the CVE link(s) in the References section.
GHSA-7774-7vr3-cc8jAuthorization Policy Bypass Due to Case Insensitive Host Comparison2021-08-30ghsa · osvUS
### Impact According to [RFC 4343](https://datatracker.ietf.org/doc/html/rfc4343), Istio authorization policy should compare the hostname in the HTTP Host header in a case insensitive way, but currently the comparison is case sensitive. The Envoy proxy will route the request hostname in a case-insensitive way which means the authorization policy could be bypassed. As an example, the user may have an authorization policy that rejects request with hostname "httpbin.foo" for some source IPs, but the attacker can bypass this by sending the request with hostname "Httpbin.Foo". ### Patches * Istio 1.11.1 and above * Istio 1.10.4 and above * Istio 1.9.8 and above ### Workarounds A Lua filter may be written to normalize Host header before the authorization check. This is similar to the Path normalization presented in the [Security Best Practices](https://istio.io/latest/docs/ops/best-practices/security/#case-normalization) guide. ### References More details can be found in the [Istio Security Bulletin](https://istio.io/latest/news/security/istio-security-2021-008). ### For more information If you have any questions or comments about this advisory, please email us at istio-security-vulnerability-reports@googlegroups.com

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veröffentlicht 2021-08-24geändert 2026-06-17

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