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Fencer Vulns
high 7.5

CVE-2023-1428 json

Denial-of-Service in gRPC

published 2023-06-09 3 y ago modified 2026-09-10 1 mo ago also GHSA-6628-q6j9-w8vg , PYSEC-2026-1425 , EUVD-2023-1972

cvss
7.5
version 3.1, CNA
cisa kev
Not listed
not in CISA's catalog
epss
0.4%
EPSS 0.4% chance of exploitation in 30 days, percentile 35%
public exploits
0
none known

Summary

There exists an vulnerability causing an abort() to be called in gRPC.  The following headers cause gRPC's C++ implementation to abort() when called via http2:

te: x (x != trailers)

:scheme: x (x != http, https)

grpclb_client_stats: x (x == anything)

On top of sending one of those headers, a later header must be sent that gets the total header size past 8KB. We recommend upgrading past git commit 2485fa94bd8a723e5c977d55a3ce10b301b437f8 or v1.53 and above.

Patch / fix

  • maven io.grpc:grpc-protobuf 1.53.0
  • pypi grpcio 1.53.0
  • rubygems grpc 1.53.0
  • Google gRPC 1.53
  • grpc grpc 1.53.0
  • rhc-worker-playbook RHEL 9 0.1.10-1.el9_5

red hat advisories RHSA-2024:10761

Vendor advisories

What the vendors themselves say about their products: affected, fixed or not affected, and what to do.

red hat product security vex CVE-2023-1428 updated cvss 7.5

gRPC: Reachable Assertion

  • Red Hat OpenShift Container Platform 4 grpc, grpc-cli, grpc-plugins, python3-grpcio
    affected: workaround, no fix planned “Will not fix”
  • Red Hat Enterprise Linux AppStream (v. 9) rhc-worker-playbook 0.1.10-1.el9_5
    fixed: vendor fix RHSA-2024:10761
  • Red Hat Builds for Red Hat OpenShift openshift-builds-waiters-rhel9, openshift-builds-triggers-container, openshift-builds/openshift-builds-waiters-rhel8, openshift-builds/openshift-builds-rhel8-operator Red Hat cert-manager Operator for Red Hat OpenShift cert-manager/cert-manager-operator-rhel9, cert-manager/jetstack-cert-manager-rhel9 Red Hat Cryostat 3 cryostat-tech-preview/cryostat-storage-rhel8, cryostat-tech-preview/cryostat-ose-oauth-proxy-rhel8 Red Hat Custom Metric Autoscaler operator for Red Hat Openshift custom-metrics-autoscaler/custom-metrics-autoscaler-rhel8, custom-metrics-autoscaler-tech-preview/custom-metrics-autoscaler-rhel8-operator Red Hat Kube Descheduler Operator kube-descheduler-operator/descheduler-rhel9, kube-descheduler-operator/kube-descheduler-rhel9-operator Red Hat Logging Subsystem for Red Hat OpenShift openshift-logging/logging-loki-rhel8, openshift-logging/lokistack-gateway-rhel8
    +32 more products
    Red Hat Logical Volume Manager Storage lvms4/topolvm-rhel9, lvms4/lvms-rhel9-operator Red Hat Migration Toolkit for Applications 7 mta/mta-cli-rhel9, mta/mta-analyzer-addon-rhel9, mta-java-external-provider-container Red Hat Migration Toolkit for Containers rhmtc/openshift-migration-registry-rhel8, rhmtc/openshift-migration-controller-rhel8, rhmtc/openshift-migration-velero-plugin-for-mtc-rhel8 Red Hat Migration Toolkit for Virtualization migration-toolkit-virtualization/mtv-validation-rhel9 Red Hat mirror registry for Red Hat OpenShift mirror-registry-container Red Hat Multiarch Tuning Operator multiarch-tuning-rhel9-operator Red Hat Multicluster Engine for Kubernetes multicluster-engine/hive-rhel8, multicluster-engine/work-rhel8, multicluster-engine/cluster-api-rhel9, multicluster-engine/agent-service-rhel8, multicluster-engine/cluster-proxy-rhel9, multicluster-engine/multicloud-manager-rhel8, +7 more Red Hat Network Observability Operator network-observability/network-observability-ebpf-agent-rhel9, network-observability/network-observability-flowlogs-pipeline-rhel9 Red Hat OpenShift API for Data Protection oadp/oadp-velero-rhel9, oadp/oadp-rhel8-operator, oadp/oadp-mustgather-rhel8, oadp/oadp-velero-plugin-rhel8, oadp/oadp-velero-plugin-for-aws-rhel8, oadp/oadp-velero-plugin-for-gcp-rhel9, +2 more Red Hat OpenShift Developer Tools and Services ocp-tools-4/jenkins-rhel8 Red Hat OpenShift Run Once Duration Override Operator run-once-duration-override-operator/run-once-duration-override-rhel8, run-once-duration-override-operator/run-once-duration-override-rhel9-operator Red Hat OpenShift Secondary Scheduler Operator openshift-secondary-scheduler-operator/secondary-scheduler-rhel9-operator Red Hat OpenShift Serverless openshift-serverless-clients, openshift-serverless-1/client-kn-rhel8, openshift-serverless-1/serving-queue-rhel8, openshift-serverless-1/eventing-mtping-rhel8, openshift-serverless-1/kourier-control-rhel8, openshift-serverless-1/ingress-rhel8-operator, +5 more Red Hat OpenShift Service Mesh 2 openshift-service-mesh/kiali-rhel8, openshift-service-mesh/istio-cni-rhel8, openshift-service-mesh/ratelimit-rhel8, openshift-service-mesh/istio-rhel8-operator Red Hat OpenShift Source-to-Image (S2I) source-to-image-container Red Hat Advanced Cluster Management for Kubernetes 2 volsync-container, rhacm2/subctl-rhel9, rhacm2/thanos-rhel7, rhacm2/prometheus-rhel8, rhacm2/acm-grafana-rhel8, rhacm2/observatorium-rhel8, +11 more Red Hat Advanced Cluster Security 4 advanced-cluster-security/rhacs-main-rhel8, advanced-cluster-security/rhacs-scanner-rhel8 Red Hat Ceph Storage 5 rhceph/rhceph-5-dashboard-rhel8 Red Hat Ceph Storage 6 rhceph/rhceph-promtail-rhel9, rhceph/rhceph-6-dashboard-rhel9 Red Hat Ceph Storage 7 rhceph/grafana-rhel9, rhceph/rhceph-promtail-rhel9 Red Hat Connectivity Link 1 rhcl-1/authorino-container, rhcl-1/dns-operator-container, rhcl-1/rhcl-operator-container Red Hat Developer Hub 1 controller-rhel9-operator Red Hat Enterprise Linux 8 podman, skopeo, buildah, podman-tests, skopeo-tests, buildah-tests, +12 more Red Hat Enterprise Linux 9 podman, skopeo, buildah, grafana, ignition, grafana-pcp, +18 more Red Hat Enterprise Linux 10 podman, skopeo, buildah, grafana, ignition, grafana-pcp, +1 more Red Hat OpenShift AI (RHOAI) odh-operator-container, odh-mm-rest-proxy-container, odh-ml-pipelines-cache-container, odh-ml-pipelines-driver-container, odh-modelmesh-runtime-adapter-container, odh-data-science-pipelines-argo-argoexec-container Red Hat OpenShift Cluster Manager CLI ocm-cli-rhel9 Red Hat OpenShift Container Platform 3.11 apb, podman, cri-tools, csi-attacher, csi-provisioner, atomic-openshift, +24 more Red Hat OpenShift Container Platform 4 podman, skopeo, podman-tests, skopeo-tests, podman-docker, podman-remote, +17 more Red Hat OpenShift Container Platform Assisted Installer 1 appliance Red Hat Openshift Container Storage 4 mcg, ocs4/cephcsi-rhel8, ocs4/mcg-rhel8-operator, ocs4/ocs-rhel8-operator, ocs4/rook-ceph-rhel8-operator, ocs4/volume-replication-rhel8-operator Red Hat Openshift Data Foundation 4 odf4/odf-cli-rhel9, odf4/ocs-rhel9-operator, odf4/odr-rhel8-operator, ceph-cosi-driver-container, odf4/odf-cosi-sidecar-rhel9
    not affected: vulnerable code not present

13 more not affected in the full advisory

Red Hat CSAF VEX © Red Hat, Inc., from https://security.access.redhat.com/data/csaf/v2/vex/; changed: reduced to product statuses and remediations. CC BY 4.0 · csaf

CISA SSVC

Exploitation
none
Automatable
yes
Technical impact
partial
Assessed
2 y ago

Exploit prediction

0.41% chance of exploitation in the next 30 days, higher than 35% of all scored CVEs (FIRST EPSS, 2026-11-08).

CVSS scores

assigned by version score vector
CNA 3.1 7.5 CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
NVD 3.1 7.5 CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
GitHub 3.1 7.5 CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
OSV 3.1 7.5 CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H

Affected packages

ecosystem package affected fixed in
maven io.grpc:grpc-protobuf
>=1.51.0, <1.53.0
1.53.0
pypi grpcio
>=1.51.0, <1.53.0
1.53.0
rubygems grpc
>=1.51.0, <1.53.0
1.53.0

Affected products

  • Google gRPC
  • grpc grpc

Classification

Weakness

References

Sources

Fencer Vulns keeps one entry per vulnerability: the CVE id wins, then GHSA, and records that alias each other are merged, except that two CVEs always keep separate entries. The same data is available as JSON.