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Fencer Vulns
high 7.5

CVE-2025-61729 json

Excessive resource consumption when printing error string for host certificate validation in crypto/x509

published 2025-12-02 11 mo ago modified 2026-10-18 21 d ago also BIT-golang-2025-61729 , EUVD-2025-200318 , GO-2025-4155

cvss
7.5
version 3.1, CNA
cisa kev
Not listed
not in CISA's catalog
epss
0.5%
EPSS 0.5% chance of exploitation in 30 days, percentile 42%
public exploits
0
none known

Summary

Within HostnameError.Error(), when constructing an error string, there is no limit to the number of hosts that will be printed out. Furthermore, the error string is constructed by repeated string concatenation, leading to quadratic runtime. Therefore, a certificate provided by a malicious actor can result in excessive resource consumption.

Patch / fix

  • bitnami golang 1.24.11, 1.25.5
  • go stdlib 1.24.11, 1.25.5
  • Go standard library crypto/x509 1.24.11, 1.25.5
  • etcd openstack 16.2 3.3.23-22.el8ost
  • erlang openstack 16.2 23.3.4.18-2.el8ost
  • erlang-ssl openstack 16.2 23.3.4.18-2.el8ost
  • erlang-asn1 openstack 16.2 23.3.4.18-2.el8ost
  • erlang-erts openstack 16.2 23.3.4.18-2.el8ost
  • erlang-hipe openstack 16.2 23.3.4.18-2.el8ost
  • erlang-sasl openstack 16.2 23.3.4.18-2.el8ost
  • erlang-snmp openstack 16.2 23.3.4.18-2.el8ost

red hat advisories RHSA-2026:54757RHSA-2026:51288RHSA-2026:9098RHSA-2026:49944RHSA-2026:2124RHSA-2026:1344

  • go1.24-openssl SLES for SAP applications 16.0, SLES 16.0 1.24.13-160000.1.1
  • go1.25-openssl SLES for SAP applications 16.0, SLES 16.0 1.25.7-160000.1.1
  • go1.24-openssl SLES for SAP 15 SP6, SLES 15 SP6-LTSS, SLE Module for Development Tools 15 SP7 +1 more 1.24.12-150600.13.15.1
  • go1.25-openssl SLES for SAP 15 SP6, SLES 15 SP6-LTSS, SLE Module for Development Tools 15 SP7 +1 more 1.25.6-150600.13.9.1
  • go1.25-openssl SLES for SAP 15 SP5, SLES for SAP 15 SP4, SLES 15 SP5-LTSS +5 more 1.25.6-150000.1.9.1
  • go1.24-openssl SLES for SAP 15 SP5, SLES for SAP 15 SP4, SLES 15 SP5-LTSS +5 more 1.24.12-150000.1.18.1
  • govulncheck-vulndb SLE Module for Package Hub 15 SP6, openSUSE Leap 15.6 0.0.20251209T172047-150000.1.127.1
  • go1.24 SLES for SAP applications 16.0, SLES 16.0 1.24.11-160000.1.1

suse advisories SUSE-SU-2026:20629-1SUSE-SU-2026:20623-1SUSE-SU-2026:0308-1SUSE-SU-2026:0298-1SUSE-SU-2026:0297-1SUSE-SU-2026:0296-1

  • govulncheck-vulndb openSUSE Leap 16.0 0.0.20260723T184607-160000.1.1
  • cf-cli openSUSE Tumbleweed 8.18.3+git.0.83ce51d9c-1.1
  • go1.24-openssl openSUSE Leap 16.0 1.24.13-160000.1.1
  • go1.25-openssl openSUSE Leap 16.0 1.25.7-160000.1.1
  • digger-cli openSUSE Tumbleweed 0.6.143-1.1
  • k6 openSUSE Tumbleweed 1.5.0-1.1
  • go1.24 openSUSE Leap 16.0 1.24.11-160000.1.1
  • go1.25 openSUSE Leap 16.0 1.25.5-160000.1.1

opensuse advisories openSUSE-SU-2026:21483-1openSUSE-SU-2026:10688-1openSUSE-SU-2026:20308-1openSUSE-SU-2026:20301-1openSUSE-SU-2026:10260-1openSUSE-SU-2026:10030-1

  • containernetworking-plugins AlmaLinux 9 1:1.9.0-2.el9
  • delve AlmaLinux 10 1.26.1-1.el10_2
  • yggdrasil AlmaLinux 10 0.4.8-3.el10_1
  • git-lfs AlmaLinux 10 3.6.1-7.el10_1
  • image-builder AlmaLinux 9 31-3.el9_7
  • image-builder AlmaLinux 10 31-4.el10_1
  • delve AlmaLinux 10 1.25.2-2.el10_1
  • git-lfs AlmaLinux 9 3.6.1-7.el9_7

almalinux advisories ALSA-2026:18913ALSA-2026:19013ALSA-2026:5146ALSA-2026:4164ALSA-2026:3839ALSA-2026:3840

  • delve Rocky Linux 10 1.26.1-1.el10_2
  • containernetworking-plugins Rocky Linux 9 1:1.9.0-2.el9
  • osbuild-composer Rocky Linux 10 149-5.el10_1.rocky.0.8
  • image-builder Rocky Linux 10 31-4.el10_1.rocky.0.2
  • osbuild-composer Rocky Linux 9 149-4.el9_7.rocky.0.8
  • image-builder Rocky Linux 9 31-3.el9_7.rocky.0.2
  • osbuild-composer Rocky Linux 8 101.4-3.el8_10.rocky.0.6
  • yggdrasil Rocky Linux 10 0.4.8-3.el10_1

rocky linux advisories RLSA-2026:19013RLSA-2026:18913RLSA-2026:3752RLSA-2026:3840RLSA-2026:3753RLSA-2026:3839

  • go Alpine 3.22 1.24.11-r0
  • go Alpine 3.24, Alpine 3.23 1.25.5-r0
  • docker Alpine 3.24, Alpine 3.23 29.1.2-r0
  • rclone Alpine 3.24, Alpine 3.23 1.72.1-r0

alpine advisories ALPINE-CVE-2025-61729

Alpine secdb © Alpine Linux, from https://secdb.alpinelinux.org via OSV; changed: normalised to fixed package versions per release. CC BY-SA 4.0

  • golang Azure Linux 3.0 1.25.5-1

azure linux advisories AZL-71960

Azure Linux vulnerability data, Copyright (c) Microsoft Corporation, from https://github.com/microsoft/AzureLinuxVulnerabilityData via OSV, under the MIT licence; changed: normalised to fixed package versions per release. MIT

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-2025-61729 updated cvss 7.5

crypto/x509: golang: Denial of Service due to excessive resource consumption via crafted certificate

  • Red Hat Assisted Installer for Red Hat OpenShift Container Platform 2 rhai/assisted-installer-rhel9, rhai/assisted-installer-agent-rhel9, rhai/assisted-installer-controller-rhel9
    affected: no fix available
  • Red Hat Confidential Compute Attestation build-of-trustee/trustee-rhel9-operator, openshift-sandboxed-containers/osc-monitor-rhel9, confidential-compute-attestation-tech-preview/trustee-rhel9-operator Red Hat Cryostat 4 cryostat/cryostat-rhel9-operator, cryostat/cryostat-ose-oauth-proxy-rhel9, cryostat/cryostat-grafana-dashboard-rhel9
    affected: no fix available, no fix planned “Will not fix”
  • Red Hat Deployment Validation Operator dvo/deployment-validation-rhel8-operator Red Hat ExternalDNS Operator edo/external-dns-rhel8 Red Hat Fence Agents Remediation Operator workload-availability/fence-agents-remediation-rhel8-operator Red Hat File Integrity Operator compliance/openshift-compliance-operator-bundle, compliance/openshift-file-integrity-rhel8-operator, compliance/openshift-file-integrity-operator-bundle
    affected: no fix available
  • Red Hat Gatekeeper 3 gatekeeper/gatekeeper-rhel9-operator Red Hat Logging Subsystem for Red Hat OpenShift openshift-logging/eventrouter-rhel9, openshift-logging/logging-loki-rhel9, openshift-logging/loki-rhel9-operator, openshift-logging/opa-openshift-rhel9, openshift-logging/lokistack-gateway-rhel9, openshift-logging/elasticsearch-proxy-rhel9, +4 more
    affected: no fix planned “Will not fix”
  • Red Hat Logical Volume Manager Storage lvms4/topolvm-rhel9 Red Hat Migration Toolkit for Applications 7 mta/mta-cli-rhel9, mta/mta-hub-rhel9, mta/mta-analyzer-addon-rhel9, mta/mta-discovery-addon-rhel9, mta/mta-java-external-provider-rhel9 Red Hat Migration Toolkit for Containers rhmtc/openshift-migration-must-gather-rhel8
    affected: no fix available
  • Red Hat Migration Toolkit for Virtualization migration-toolkit-virtualization/mtv-api-rhel9, migration-toolkit-virtualization/mtv-rhel8-operator, migration-toolkit-virtualization/mtv-rhel9-operator, migration-toolkit-virtualization/mtv-virt-v2v-rhel9, migration-toolkit-virtualization/mtv-controller-rhel9, migration-toolkit-virtualization/mtv-validation-rhel9, +6 more
    affected: no fix available, no fix planned “Will not fix”
  • Red Hat mirror registry for Red Hat OpenShift openshift/mirror-registry-rhel8
    affected: no fix planned “Will not fix”
  • Red Hat Multiarch Tuning Operator multiarch-tuning/multiarch-tuning-rhel9-operator Red Hat Multicluster Engine for Kubernetes multicluster-engine/hive-rhel9, multicluster-engine/work-rhel8, multicluster-engine/work-rhel9, multicluster-engine/placement-rhel8, multicluster-engine/placement-rhel9, multicluster-engine/must-gather-rhel9, +47 more
    affected: no fix available
show 12 more
  • Red Hat Multicluster Global Hub multicluster-globalhub/multicluster-globalhub-grafana-rhel9, multicluster-globalhub/multicluster-globalhub-manager-rhel9, multicluster-globalhub/multicluster-globalhub-rhel9-operator, multicluster-globalhub/multicluster-globalhub-operator-bundle, multicluster-globalhub/multicluster-globalhub-postgres-exporter-rhel9, multicluster-globalhub/multicluster-globalhub-kessel-inventory-api-rhel9
    affected: no fix available, no fix planned “Will not fix”
  • Red Hat Node Maintenance Operator container-native-virtualization/node-maintenance-operator
    affected: no fix planned “Will not fix”
  • Red Hat OpenShift API for Data Protection oadp/oadp-velero-rhel8, 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-rhel8, +3 more Red Hat OpenShift Developer Tools and Services helm, openshift4/ose-jenkins, ocp-tools-4/jenkins-rhel8, ocp-tools-4/jenkins-rhel9, ocp-tools-4/jenkins-agent-base-rhel9
    affected: no fix available
  • Red Hat OpenShift Lightspeed openshift-lightspeed/lightspeed-rhel9-operator, openshift-lightspeed/lightspeed-operator-bundle, openshift-lightspeed/openshift-mcp-server-rhel9, openshift-lightspeed-tech-preview/lightspeed-operator-bundle
    affected: no fix available, no fix planned “Will not fix”
  • Red Hat OpenShift Pipelines openshift-pipelines-client Red Hat OpenShift Serverless kn-workflow-plugin, openshift-serverless-clients, openshift-serverless-1/logic-rhel9-operator, openshift-serverless-1/kn-plugin-event-sender-rhel9, openshift-serverless-1/kn-plugin-func-func-util-rhel9, openshift-serverless-1/kn-backstage-plugins-eventmesh-rhel9
    affected: no fix available
  • Red Hat OpenShift Service Mesh 2 openshift-service-mesh/openshift-golang-builder
    affected: no fix planned “Will not fix”
  • Red Hat 3scale API Management Platform 2 3scale-amp26/operator, rhcl-1/authorino-rhel9, 3scale-amp26/3scale-operator, 3scale-amp2/3scale-rhel7-operator, 3scale-amp2/3scale-rhel9-operator, 3scale-amp2/3scale-operator-bundle, +3 more Red Hat Advanced Cluster Management for Kubernetes 2 flightctl, flightctl-agent, flightctl-selinux, rhacm2/prometheus-rhel9, rhacm2/acm-grafana-rhel9, rhacm2/acm-search-v2-rhel9, +27 more Red Hat Ansible Automation Platform 2 automation-gateway-proxy, ansible-automation-platform-26/receptor-rhel9
    affected: no fix available, no fix planned “Will not fix”
  • Red Hat Ceph Storage 5 rhel8/grafana, rhel9/grafana, rhceph/grafana-rhel9, rhceph/snmp-notifier-rhel8, rhceph/snmp-notifier-rhel9 Red Hat Ceph Storage 6 ceph, cephadm, librbd1, librgw2, rbd-nbd, ceph-mib, +21 more Red Hat Ceph Storage 7 rhceph/snmp-notifier-rhel8, rhceph/snmp-notifier-rhel9 Red Hat Ceph Storage 8 ceph, cephadm, librbd1, librgw2, rbd-nbd, ceph-mib, +23 more Red Hat Certification Program for Red Hat Enterprise Linux 9 redhat-certification-preflight
    affected: no fix available
  • Red Hat Connectivity Link 1 rhcl-1/coredns-rhel9, rhcl-1/authorino-rhel9, rhcl-1/dns-rhel9-operator, rhcl-1/dns-operator-bundle, rhcl-1/rhcl-rhel9-operator, rhcl-1/rhcl-operator-bundle, +10 more
    affected: no fix available, no fix planned “Will not fix”
  • Red Hat Edge Manager preview flightctl, rhem/flightctl-ui-rhel9, rhem/flightctl-api-rhel9, rhem/flightctl-ui-ocp-rhel9, rhem/flightctl-worker-rhel9, rhem/flightctl-db-setup-rhel9, +6 more Red Hat Enterprise Linux 7 rhc-worker-script
    affected: no fix available
  • Red Hat Enterprise Linux 8 runc, skopeo, buildah, skopeo-tests, weldr-client, buildah-tests, +2 more Red Hat Enterprise Linux 9 butane, ignition, weldr-client, ignition-edge, ignition-grub, gvisor-tap-vsock, +4 more Red Hat Enterprise Linux 10 runc, butane, ignition, gvisor-tap-vsock, rhel10/bootc-image-builder, containernetworking-plugins, +1 more Red Hat OpenShift AI (RHOAI) rhoai/odh-rhel8-operator, rhoai/odh-mm-rest-proxy-rhel8, rhoai/odh-mm-rest-proxy-rhel9, rhoai/odh-model-registry-rhel8, rhoai/odh-model-registry-rhel9, rhoai/odh-mod-arch-gen-ai-rhel9, +18 more
    affected: no fix available, no fix planned “Will not fix”
  • Red Hat OpenShift Cluster Manager CLI ocm-cli-clients/ocm-cli-rhel9
    affected: no fix available

13 more affected, 124 more fixed, 130 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
no
Technical impact
partial
Assessed
11 mo ago

Exploit prediction

0.49% chance of exploitation in the next 30 days, higher than 42% of all scored CVEs (FIRST EPSS, 2026-11-08).

CVSS scores

assigned by version score vector
CISA ADP 3.1 7.5 CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
CNA 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
bitnami golang
<1.24.11
>=1.25.0, <1.25.5
1.24.11
1.25.5
go stdlib
<1.24.11
>=1.25.0, <1.25.5
1.24.11
1.25.5

Affected products

  • Go standard library crypto/x509

Classification

Weakness
  • CWE-295 Improper Certificate Validation

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.

CPEs and fixed versions use Anchore's correction of NVD's data: Added CPE configurations because not yet analyzed by NVD.