Vulnerabilities
Misconfiguration
Compliance
Cryptography
CVE Vulnerabilities

CVE-2021-27918

Loop with Unreachable Exit Condition ('Infinite Loop')

Published: Mar 11, 2021 | Modified: Jun 17, 2026
CVSS 3.x
7.5
HIGH
Source:
NVD
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
CVSS 2.x
5 MEDIUM
AV:N/AC:L/Au:N/C:N/I:N/A:P
RedHat/V2
RedHat/V3
7.5 MODERATE
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
Ubuntu
MEDIUM
Vulnerability-free packages from our partners
Additional information
NVDhttps://nvd.nist.gov/vuln/detail/CVE-2021-27918
CWEhttps://cwe.mitre.org/data/definitions/835.html

encoding/xml in Go before 1.15.9 and 1.16.x before 1.16.1 has an infinite loop if a custom TokenReader (for xml.NewTokenDecoder) returns EOF in the middle of an element. This can occur in the Decode, DecodeElement, or Skip method.

Weakness

The product contains an iteration or loop with an exit condition that cannot be reached, i.e., an infinite loop.

Affected Software

NameVendorStart VersionEnd Version
GoGolang*1.15.9 (excluding)
GoGolang1.16.0 (including)1.16.1 (excluding)
Openshift Serveless 1.16RedHatopenshift-serverless-1/client-kn-rhel8:0.22.0-4*
Openshift Serveless 1.16RedHatopenshift-serverless-1/eventing-apiserver-receive-adapter-rhel8:0.22.0-2*
Openshift Serveless 1.16RedHatopenshift-serverless-1/eventing-controller-rhel8:0.22.0-2*
Openshift Serveless 1.16RedHatopenshift-serverless-1/eventing-in-memory-channel-controller-rhel8:0.22.0-2*
Openshift Serveless 1.16RedHatopenshift-serverless-1/eventing-in-memory-channel-dispatcher-rhel8:0.22.0-2*
Openshift Serveless 1.16RedHatopenshift-serverless-1/eventing-mtbroker-filter-rhel8:0.22.0-2*
Openshift Serveless 1.16RedHatopenshift-serverless-1/eventing-mtbroker-ingress-rhel8:0.22.0-2*
Openshift Serveless 1.16RedHatopenshift-serverless-1/eventing-mtchannel-broker-rhel8:0.22.0-2*
Openshift Serveless 1.16RedHatopenshift-serverless-1/eventing-mtping-rhel8:0.22.0-2*
Openshift Serveless 1.16RedHatopenshift-serverless-1/eventing-storage-version-migration-rhel8:0.22.0-2*
Openshift Serveless 1.16RedHatopenshift-serverless-1/eventing-sugar-controller-rhel8:0.22.0-2*
Openshift Serveless 1.16RedHatopenshift-serverless-1/eventing-webhook-rhel8:0.22.0-2*
Openshift Serveless 1.16RedHatopenshift-serverless-1/ingress-rhel8-operator:1.16.0-3*
Openshift Serveless 1.16RedHatopenshift-serverless-1/knative-rhel8-operator:1.16.0-3*
Openshift Serveless 1.16RedHatopenshift-serverless-1/kn-cli-artifacts-rhel8:0.22.0-3*
Openshift Serveless 1.16RedHatopenshift-serverless-1/kourier-control-rhel8:0.22.0-2*
Openshift Serveless 1.16RedHatopenshift-serverless-1/net-istio-controller-rhel8:0.22.0-2*
Openshift Serveless 1.16RedHatopenshift-serverless-1/net-istio-webhook-rhel8:0.22.0-2*
Openshift Serveless 1.16RedHatopenshift-serverless-1/serverless-operator-bundle:1.16.0-6*
Openshift Serveless 1.16RedHatopenshift-serverless-1/serverless-rhel8-operator:1.16.0-3*
Openshift Serveless 1.16RedHatopenshift-serverless-1/serving-activator-rhel8:0.22.0-3*
Openshift Serveless 1.16RedHatopenshift-serverless-1/serving-autoscaler-hpa-rhel8:0.22.0-3*
Openshift Serveless 1.16RedHatopenshift-serverless-1/serving-autoscaler-rhel8:0.22.0-3*
Openshift Serveless 1.16RedHatopenshift-serverless-1/serving-controller-rhel8:0.22.0-3*
Openshift Serveless 1.16RedHatopenshift-serverless-1/serving-domain-mapping-rhel8:0.22.0-3*
Openshift Serveless 1.16RedHatopenshift-serverless-1/serving-domain-mapping-webhook-rhel8:0.22.0-3*
Openshift Serveless 1.16RedHatopenshift-serverless-1/serving-queue-rhel8:0.22.0-4*
Openshift Serveless 1.16RedHatopenshift-serverless-1/serving-storage-version-migration-rhel8:0.22.0-3*
Openshift Serveless 1.16RedHatopenshift-serverless-1/serving-webhook-rhel8:0.22.0-3*
Openshift Serveless 1.16RedHatopenshift-serverless-1/svls-must-gather-rhel8:1.16.0-2*
Openshift Serverless 1.17RedHatopenshift-serverless-1/client-kn-rhel8:0.23.2-2*
Openshift Serverless 1.17RedHatopenshift-serverless-1/eventing-apiserver-receive-adapter-rhel8:0.23.0-5*
Openshift Serverless 1.17RedHatopenshift-serverless-1/eventing-controller-rhel8:0.23.0-5*
Openshift Serverless 1.17RedHatopenshift-serverless-1/eventing-in-memory-channel-controller-rhel8:0.23.0-5*
Openshift Serverless 1.17RedHatopenshift-serverless-1/eventing-in-memory-channel-dispatcher-rhel8:0.23.0-5*
Openshift Serverless 1.17RedHatopenshift-serverless-1/eventing-mtbroker-filter-rhel8:0.23.0-5*
Openshift Serverless 1.17RedHatopenshift-serverless-1/eventing-mtbroker-ingress-rhel8:0.23.0-5*
Openshift Serverless 1.17RedHatopenshift-serverless-1/eventing-mtchannel-broker-rhel8:0.23.0-5*
Openshift Serverless 1.17RedHatopenshift-serverless-1/eventing-mtping-rhel8:0.23.0-5*
Openshift Serverless 1.17RedHatopenshift-serverless-1/eventing-storage-version-migration-rhel8:0.23.0-5*
Openshift Serverless 1.17RedHatopenshift-serverless-1/eventing-sugar-controller-rhel8:0.23.0-5*
Openshift Serverless 1.17RedHatopenshift-serverless-1/eventing-webhook-rhel8:0.23.0-5*
Openshift Serverless 1.17RedHatopenshift-serverless-1/ingress-rhel8-operator:1.17.0-5*
Openshift Serverless 1.17RedHatopenshift-serverless-1/knative-rhel8-operator:1.17.0-5*
Openshift Serverless 1.17RedHatopenshift-serverless-1/kn-cli-artifacts-rhel8:0.23.2-1*
Openshift Serverless 1.17RedHatopenshift-serverless-1/kourier-control-rhel8:0.23.0-4*
Openshift Serverless 1.17RedHatopenshift-serverless-1/net-istio-controller-rhel8:0.23.0-4*
Openshift Serverless 1.17RedHatopenshift-serverless-1/net-istio-webhook-rhel8:0.23.0-4*
Openshift Serverless 1.17RedHatopenshift-serverless-1/serverless-operator-bundle:1.17.0-11*
Openshift Serverless 1.17RedHatopenshift-serverless-1/serverless-rhel8-operator:1.17.0-5*
Openshift Serverless 1.17RedHatopenshift-serverless-1/serving-activator-rhel8:0.23.1-2*
Openshift Serverless 1.17RedHatopenshift-serverless-1/serving-autoscaler-hpa-rhel8:0.23.1-2*
Openshift Serverless 1.17RedHatopenshift-serverless-1/serving-autoscaler-rhel8:0.23.1-2*
Openshift Serverless 1.17RedHatopenshift-serverless-1/serving-controller-rhel8:0.23.1-2*
Openshift Serverless 1.17RedHatopenshift-serverless-1/serving-domain-mapping-rhel8:0.23.1-2*
Openshift Serverless 1.17RedHatopenshift-serverless-1/serving-domain-mapping-webhook-rhel8:0.23.1-2*
Openshift Serverless 1.17RedHatopenshift-serverless-1/serving-queue-rhel8:0.23.1-2*
Openshift Serverless 1.17RedHatopenshift-serverless-1/serving-storage-version-migration-rhel8:0.23.1-2*
Openshift Serverless 1.17RedHatopenshift-serverless-1/serving-webhook-rhel8:0.23.1-2*
Openshift Serverless 1.17RedHatopenshift-serverless-1/svls-must-gather-rhel8:1.17.0-5*
Openshift Serverless 1 on RHEL 8RedHatopenshift-serverless-clients-0:0.22.0-3.el8*
Openshift Serverless 1 on RHEL 8RedHatopenshift-serverless-clients-0:0.23.2-1.el8*
Red Hat Enterprise Linux 8RedHatgo-toolset:rhel8-8040020210716085908.5081a262*
Red Hat OpenShift Container Storage 4.8.0 on RHEL-8RedHatocs4/cephcsi-rhel8:4.8-125.01872cc.release_4.8*
Red Hat OpenShift Container Storage 4.8.0 on RHEL-8RedHatocs4/mcg-core-rhel8:5.8.0-38.e060925.5.8*
Red Hat OpenShift Container Storage 4.8.0 on RHEL-8RedHatocs4/mcg-rhel8-operator:5.8.0-27.4a6ca5f.5.8*
Red Hat OpenShift Container Storage 4.8.0 on RHEL-8RedHatocs4/ocs-must-gather-rhel8:4.8-196.a35d7d7.release_4.8*
Red Hat OpenShift Container Storage 4.8.0 on RHEL-8RedHatocs4/ocs-operator-bundle:4.8.0-5*
Red Hat OpenShift Container Storage 4.8.0 on RHEL-8RedHatocs4/ocs-rhel8-operator:4.8-196.a35d7d7.release_4.8*
Red Hat OpenShift Container Storage 4.8.0 on RHEL-8RedHatocs4/rook-ceph-rhel8-operator:4.8-167.9a9db5f.release_4.8*
Red Hat OpenShift Container Storage 4.8.0 on RHEL-8RedHatocs4/volume-replication-rhel8-operator:4.8-20.ab575a2.release_v0.1*
GolangUbuntutrusty*
Golang-1.10Ubuntubionic*
Golang-1.10Ubuntuesm-infra/xenial*
Golang-1.10Ubuntutrusty*
Golang-1.10Ubuntutrusty/esm*
Golang-1.10Ubuntuxenial*
Golang-1.13Ubuntubionic*
Golang-1.13Ubuntuesm-apps/xenial*
Golang-1.13Ubuntufocal*
Golang-1.13Ubuntugroovy*
Golang-1.13Ubuntuhirsute*
Golang-1.13Ubuntuimpish*
Golang-1.13Ubuntukinetic*
Golang-1.13Ubuntuxenial*
Golang-1.14Ubuntufocal*
Golang-1.14Ubuntugroovy*
Golang-1.14Ubuntuhirsute*
Golang-1.15Ubuntugroovy*
Golang-1.15Ubuntuhirsute*
Golang-1.15Ubuntuimpish*
Golang-1.6Ubuntuesm-infra/xenial*
Golang-1.6Ubuntutrusty*
Golang-1.6Ubuntuxenial*
Golang-1.8Ubuntubionic*
Golang-1.9Ubuntubionic*

References

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