CVE-2019-18802

highpriority · track · 40EPSS 0.025 · 84 %ileEUUS
grimoire priorityP2 · Scheduled
Exploitable?
—
no known exploitation
Likely / severe?
2.46% (84th) EPSS
CVSS 7.5 · high
Is it mine?
25 products
Check your exposure
Who says so?
4 sources
cnnvd · enisa_euvd · nvd · redhat_csaf

EPSS · scored 2026-10-27

An issue was discovered in Envoy 1.12.0. An untrusted remote client may send an HTTP header (such as Host) with whitespace after the header content. Envoy will treat "header-value " as a different string from "header-value" so for example with the Host header "example.com " one could bypass "example.com" matchers.

01

remediations

Vendor fix, mitigation, or workaround guidance, as published by each source.

A vendor fix is available.

  • Fixedkiali-0:v1.0.8.redhat1-1.el7.src as a component of Red Hat OpenShift Service Mesh 1.0redhat_csaf

    The OpenShift Service Mesh release notes provide information on the features and known issues: https://docs.openshift.com/container-platform/4.2/service_mesh/servicemesh-release-notes.html

    https://access.redhat.com/errata/RHSA-2019:4222
  • Fixedkiali-0:v1.0.8.redhat1-1.el7.x86_64 as a component of Red Hat OpenShift Service Mesh 1.0redhat_csaf

    The OpenShift Service Mesh release notes provide information on the features and known issues: https://docs.openshift.com/container-platform/4.2/service_mesh/servicemesh-release-notes.html

    https://access.redhat.com/errata/RHSA-2019:4222
  • Fixedservicemesh-0:1.0.3-1.el8.src as a component of OpenShift Service Mesh 1.0redhat_csaf

    The OpenShift Service Mesh release notes provide information on the features and known issues: https://docs.openshift.com/container-platform/4.2/service_mesh/servicemesh-release-notes.html

    https://access.redhat.com/errata/RHSA-2019:4222
  • Fixedservicemesh-0:1.0.3-1.el8.x86_64 as a component of OpenShift Service Mesh 1.0redhat_csaf

    The OpenShift Service Mesh release notes provide information on the features and known issues: https://docs.openshift.com/container-platform/4.2/service_mesh/servicemesh-release-notes.html

    https://access.redhat.com/errata/RHSA-2019:4222
  • Fixedservicemesh-citadel-0:1.0.3-1.el8.x86_64 as a component of OpenShift Service Mesh 1.0redhat_csaf

    The OpenShift Service Mesh release notes provide information on the features and known issues: https://docs.openshift.com/container-platform/4.2/service_mesh/servicemesh-release-notes.html

    https://access.redhat.com/errata/RHSA-2019:4222
  • Fixedservicemesh-cni-0:1.0.3-1.el8.src as a component of OpenShift Service Mesh 1.0redhat_csaf

    The OpenShift Service Mesh release notes provide information on the features and known issues: https://docs.openshift.com/container-platform/4.2/service_mesh/servicemesh-release-notes.html

    https://access.redhat.com/errata/RHSA-2019:4222
  • Fixedservicemesh-cni-0:1.0.3-1.el8.x86_64 as a component of OpenShift Service Mesh 1.0redhat_csaf

    The OpenShift Service Mesh release notes provide information on the features and known issues: https://docs.openshift.com/container-platform/4.2/service_mesh/servicemesh-release-notes.html

    https://access.redhat.com/errata/RHSA-2019:4222
  • Fixedservicemesh-galley-0:1.0.3-1.el8.x86_64 as a component of OpenShift Service Mesh 1.0redhat_csaf

    The OpenShift Service Mesh release notes provide information on the features and known issues: https://docs.openshift.com/container-platform/4.2/service_mesh/servicemesh-release-notes.html

    https://access.redhat.com/errata/RHSA-2019:4222
  • Fixedservicemesh-grafana-0:6.2.2-25.el8.src as a component of OpenShift Service Mesh 1.0redhat_csaf

    The OpenShift Service Mesh release notes provide information on the features and known issues: https://docs.openshift.com/container-platform/4.2/service_mesh/servicemesh-release-notes.html

    https://access.redhat.com/errata/RHSA-2019:4222
  • Fixedservicemesh-grafana-0:6.2.2-25.el8.x86_64 as a component of OpenShift Service Mesh 1.0redhat_csaf

    The OpenShift Service Mesh release notes provide information on the features and known issues: https://docs.openshift.com/container-platform/4.2/service_mesh/servicemesh-release-notes.html

    https://access.redhat.com/errata/RHSA-2019:4222
  • Fixedservicemesh-grafana-prometheus-0:6.2.2-25.el8.x86_64 as a component of OpenShift Service Mesh 1.0redhat_csaf

    The OpenShift Service Mesh release notes provide information on the features and known issues: https://docs.openshift.com/container-platform/4.2/service_mesh/servicemesh-release-notes.html

    https://access.redhat.com/errata/RHSA-2019:4222
  • Fixedservicemesh-istioctl-0:1.0.3-1.el8.x86_64 as a component of OpenShift Service Mesh 1.0redhat_csaf

    The OpenShift Service Mesh release notes provide information on the features and known issues: https://docs.openshift.com/container-platform/4.2/service_mesh/servicemesh-release-notes.html

    https://access.redhat.com/errata/RHSA-2019:4222
  • Fixedservicemesh-mixc-0:1.0.3-1.el8.x86_64 as a component of OpenShift Service Mesh 1.0redhat_csaf

    The OpenShift Service Mesh release notes provide information on the features and known issues: https://docs.openshift.com/container-platform/4.2/service_mesh/servicemesh-release-notes.html

    https://access.redhat.com/errata/RHSA-2019:4222
  • Fixedservicemesh-mixs-0:1.0.3-1.el8.x86_64 as a component of OpenShift Service Mesh 1.0redhat_csaf

    The OpenShift Service Mesh release notes provide information on the features and known issues: https://docs.openshift.com/container-platform/4.2/service_mesh/servicemesh-release-notes.html

    https://access.redhat.com/errata/RHSA-2019:4222
  • Fixedservicemesh-operator-0:1.0.3-1.el8.src as a component of OpenShift Service Mesh 1.0redhat_csaf

    The OpenShift Service Mesh release notes provide information on the features and known issues: https://docs.openshift.com/container-platform/4.2/service_mesh/servicemesh-release-notes.html

    https://access.redhat.com/errata/RHSA-2019:4222
  • Fixedservicemesh-operator-0:1.0.3-1.el8.x86_64 as a component of OpenShift Service Mesh 1.0redhat_csaf

    The OpenShift Service Mesh release notes provide information on the features and known issues: https://docs.openshift.com/container-platform/4.2/service_mesh/servicemesh-release-notes.html

    https://access.redhat.com/errata/RHSA-2019:4222
  • Fixedservicemesh-pilot-agent-0:1.0.3-1.el8.x86_64 as a component of OpenShift Service Mesh 1.0redhat_csaf

    The OpenShift Service Mesh release notes provide information on the features and known issues: https://docs.openshift.com/container-platform/4.2/service_mesh/servicemesh-release-notes.html

    https://access.redhat.com/errata/RHSA-2019:4222
  • Fixedservicemesh-pilot-discovery-0:1.0.3-1.el8.x86_64 as a component of OpenShift Service Mesh 1.0redhat_csaf

    The OpenShift Service Mesh release notes provide information on the features and known issues: https://docs.openshift.com/container-platform/4.2/service_mesh/servicemesh-release-notes.html

    https://access.redhat.com/errata/RHSA-2019:4222
  • Fixedservicemesh-prometheus-0:2.7.2-26.el8.src as a component of OpenShift Service Mesh 1.0redhat_csaf

    The OpenShift Service Mesh release notes provide information on the features and known issues: https://docs.openshift.com/container-platform/4.2/service_mesh/servicemesh-release-notes.html

    https://access.redhat.com/errata/RHSA-2019:4222
  • Fixedservicemesh-prometheus-0:2.7.2-26.el8.x86_64 as a component of OpenShift Service Mesh 1.0redhat_csaf

    The OpenShift Service Mesh release notes provide information on the features and known issues: https://docs.openshift.com/container-platform/4.2/service_mesh/servicemesh-release-notes.html

    https://access.redhat.com/errata/RHSA-2019:4222
  • Fixedservicemesh-proxy-0:1.0.3-1.el8.src as a component of OpenShift Service Mesh 1.0redhat_csaf

    The OpenShift Service Mesh release notes provide information on the features and known issues: https://docs.openshift.com/container-platform/4.2/service_mesh/servicemesh-release-notes.html

    https://access.redhat.com/errata/RHSA-2019:4222
  • Fixedservicemesh-proxy-0:1.0.3-1.el8.x86_64 as a component of OpenShift Service Mesh 1.0redhat_csaf

    The OpenShift Service Mesh release notes provide information on the features and known issues: https://docs.openshift.com/container-platform/4.2/service_mesh/servicemesh-release-notes.html

    https://access.redhat.com/errata/RHSA-2019:4222
  • Fixedservicemesh-sidecar-injector-0:1.0.3-1.el8.x86_64 as a component of OpenShift Service Mesh 1.0redhat_csaf

    The OpenShift Service Mesh release notes provide information on the features and known issues: https://docs.openshift.com/container-platform/4.2/service_mesh/servicemesh-release-notes.html

    https://access.redhat.com/errata/RHSA-2019:4222
02

cvss

Technical severity, 0–10. One row per scoring source.

9.8
010

base score 0–10 · higher = more severe · hover a vector to decode⚠ sources disagree · high–critical · 7.5–9.8

v2.07.5highAV:N/AC:L/Au:N/C:P/I:P/A:Pprimary · NVD / NIST USexploitability 10 · impact 6.4
v3.19.8criticalCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:Hprimary · NVD / NIST USexploitability 3.9 · impact 5.9
v3.07.5highCVSS:3.0/AV:N/AC:H/PR:L/UI:N/S:U/C:H/I:H/A:Hsecondary · Red Hat Product Security US
v3.19criticalCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H/E:Usecondary · CVSS-BT (t0sche)
03

weaknesses

The CWE weakness classes this flaw belongs to.

CWE-284US
04

affected products (25)

Products and version ranges known to be affected.

showing 20 of 25
05

advisories (1)

Vendor and ecosystem advisories describing this.

  • RHSA-2019:4222Red Hat Security Advisory: Red Hat OpenShift Service Mesh 1.0.3 RPMs security update2019-12-11csaf · redhat_csafUS

    Red Hat OpenShift Service Mesh 1.0.3. Red Hat Product Security has rated this update as having a security impact of Critical. 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.

06

also known as (3)

Other names and identifiers for this entity.

07

sources

Which sources assert this record, and when.

cnnvdenisa_euvdnvdredhat_csafNVDCVE.orgMITRE
published 2019-12-13modified 2026-06-17
08

references (25)

External citations — patches, advisories, analysis.

scry

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