ID

VAR-202005-1028

CVE

CVE-2020-8616

TITLE

XACK DNS Service operation interruption in (DoS) Vulnerability

DESCRIPTION

A malicious actor who intentionally exploits this lack of effective limitation on the number of fetches performed when processing referrals can, through the use of specially crafted referrals, cause a recursing server to issue a very large number of fetches in an attempt to process the referral. This has at least two potential effects: The performance of the recursing server can potentially be degraded by the additional work required to perform these fetches, and The attacker can exploit this behavior to use the recursing server as a reflector in a reflection attack with a high amplification factor. XACK DNS Is a corporation XACK Provides DNS Software for servers. XACK DNS In general NXNSAttack Service disruption due to a problem called (DoS) There are vulnerabilities that can be attacked. This vulnerability information is provided by the developer for the purpose of disseminating it to product users. IPA Report to JPCERT/CC Coordinated with the developer.The following service operation interruptions by a remote third party (DoS) You may be attacked. -Increases the load of the full resolver and reduces performance. ・ Abuse the full resolver as a stepping stone for reflection attacks. 6.6) - x86_64 3. -----BEGIN PGP SIGNED MESSAGE----- Hash: SHA256 ==================================================================== Red Hat Security Advisory Synopsis: Important: bind security update Advisory ID: RHSA-2020:3433-01 Product: Red Hat Enterprise Linux Advisory URL: https://access.redhat.com/errata/RHSA-2020:3433 Issue date: 2020-08-12 CVE Names: CVE-2020-8616 CVE-2020-8617 ==================================================================== 1. Summary: An update for bind is now available for Red Hat Enterprise Linux 7.4 Advanced Update Support, Red Hat Enterprise Linux 7.4 Telco Extended Update Support, and Red Hat Enterprise Linux 7.4 Update Services for SAP Solutions. 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. 2. Relevant releases/architectures: Red Hat Enterprise Linux Server AUS (v. 7.4) - noarch, x86_64 Red Hat Enterprise Linux Server E4S (v. 7.4) - noarch, ppc64le, x86_64 Red Hat Enterprise Linux Server Optional AUS (v. 7.4) - x86_64 Red Hat Enterprise Linux Server Optional E4S (v. 7.4) - ppc64le, x86_64 Red Hat Enterprise Linux Server Optional TUS (v. 7.4) - x86_64 Red Hat Enterprise Linux Server TUS (v. 7.4) - noarch, x86_64 3. Description: The Berkeley Internet Name Domain (BIND) is an implementation of the Domain Name System (DNS) protocols. BIND includes a DNS server (named); a resolver library (routines for applications to use when interfacing with DNS); and tools for verifying that the DNS server is operating correctly. Security Fix(es): * bind: BIND does not sufficiently limit the number of fetches performed when processing referrals (CVE-2020-8616) * bind: A logic error in code which checks TSIG validity can be used to trigger an assertion failure in tsig.c (CVE-2020-8617) For more details about the security issue(s), including the impact, a CVSS score, acknowledgments, and other related information, refer to the CVE page(s) listed in the References section. 4. Solution: For details on how to apply this update, which includes the changes described in this advisory, refer to: https://access.redhat.com/articles/11258 After installing the update, the BIND daemon (named) will be restarted automatically. 5. Bugs fixed (https://bugzilla.redhat.com/): 1836118 - CVE-2020-8616 bind: BIND does not sufficiently limit the number of fetches performed when processing referrals 1836124 - CVE-2020-8617 bind: A logic error in code which checks TSIG validity can be used to trigger an assertion failure in tsig.c 6. Package List: Red Hat Enterprise Linux Server AUS (v. 7.4): Source: bind-9.9.4-51.el7_4.4.src.rpm noarch: bind-license-9.9.4-51.el7_4.4.noarch.rpm x86_64: bind-9.9.4-51.el7_4.4.x86_64.rpm bind-chroot-9.9.4-51.el7_4.4.x86_64.rpm bind-debuginfo-9.9.4-51.el7_4.4.i686.rpm bind-debuginfo-9.9.4-51.el7_4.4.x86_64.rpm bind-libs-9.9.4-51.el7_4.4.i686.rpm bind-libs-9.9.4-51.el7_4.4.x86_64.rpm bind-libs-lite-9.9.4-51.el7_4.4.i686.rpm bind-libs-lite-9.9.4-51.el7_4.4.x86_64.rpm bind-pkcs11-9.9.4-51.el7_4.4.x86_64.rpm bind-pkcs11-libs-9.9.4-51.el7_4.4.i686.rpm bind-pkcs11-libs-9.9.4-51.el7_4.4.x86_64.rpm bind-pkcs11-utils-9.9.4-51.el7_4.4.x86_64.rpm bind-utils-9.9.4-51.el7_4.4.x86_64.rpm Red Hat Enterprise Linux Server E4S (v. 7.4): Source: bind-9.9.4-51.el7_4.4.src.rpm noarch: bind-license-9.9.4-51.el7_4.4.noarch.rpm ppc64le: bind-9.9.4-51.el7_4.4.ppc64le.rpm bind-chroot-9.9.4-51.el7_4.4.ppc64le.rpm bind-debuginfo-9.9.4-51.el7_4.4.ppc64le.rpm bind-libs-9.9.4-51.el7_4.4.ppc64le.rpm bind-libs-lite-9.9.4-51.el7_4.4.ppc64le.rpm bind-pkcs11-9.9.4-51.el7_4.4.ppc64le.rpm bind-pkcs11-libs-9.9.4-51.el7_4.4.ppc64le.rpm bind-pkcs11-utils-9.9.4-51.el7_4.4.ppc64le.rpm bind-utils-9.9.4-51.el7_4.4.ppc64le.rpm x86_64: bind-9.9.4-51.el7_4.4.x86_64.rpm bind-chroot-9.9.4-51.el7_4.4.x86_64.rpm bind-debuginfo-9.9.4-51.el7_4.4.i686.rpm bind-debuginfo-9.9.4-51.el7_4.4.x86_64.rpm bind-libs-9.9.4-51.el7_4.4.i686.rpm bind-libs-9.9.4-51.el7_4.4.x86_64.rpm bind-libs-lite-9.9.4-51.el7_4.4.i686.rpm bind-libs-lite-9.9.4-51.el7_4.4.x86_64.rpm bind-pkcs11-9.9.4-51.el7_4.4.x86_64.rpm bind-pkcs11-libs-9.9.4-51.el7_4.4.i686.rpm bind-pkcs11-libs-9.9.4-51.el7_4.4.x86_64.rpm bind-pkcs11-utils-9.9.4-51.el7_4.4.x86_64.rpm bind-utils-9.9.4-51.el7_4.4.x86_64.rpm Red Hat Enterprise Linux Server TUS (v. 7.4): Source: bind-9.9.4-51.el7_4.4.src.rpm noarch: bind-license-9.9.4-51.el7_4.4.noarch.rpm x86_64: bind-9.9.4-51.el7_4.4.x86_64.rpm bind-chroot-9.9.4-51.el7_4.4.x86_64.rpm bind-debuginfo-9.9.4-51.el7_4.4.i686.rpm bind-debuginfo-9.9.4-51.el7_4.4.x86_64.rpm bind-libs-9.9.4-51.el7_4.4.i686.rpm bind-libs-9.9.4-51.el7_4.4.x86_64.rpm bind-libs-lite-9.9.4-51.el7_4.4.i686.rpm bind-libs-lite-9.9.4-51.el7_4.4.x86_64.rpm bind-pkcs11-9.9.4-51.el7_4.4.x86_64.rpm bind-pkcs11-libs-9.9.4-51.el7_4.4.i686.rpm bind-pkcs11-libs-9.9.4-51.el7_4.4.x86_64.rpm bind-pkcs11-utils-9.9.4-51.el7_4.4.x86_64.rpm bind-utils-9.9.4-51.el7_4.4.x86_64.rpm Red Hat Enterprise Linux Server Optional AUS (v. 7.4): x86_64: bind-debuginfo-9.9.4-51.el7_4.4.i686.rpm bind-debuginfo-9.9.4-51.el7_4.4.x86_64.rpm bind-devel-9.9.4-51.el7_4.4.i686.rpm bind-devel-9.9.4-51.el7_4.4.x86_64.rpm bind-lite-devel-9.9.4-51.el7_4.4.i686.rpm bind-lite-devel-9.9.4-51.el7_4.4.x86_64.rpm bind-pkcs11-devel-9.9.4-51.el7_4.4.i686.rpm bind-pkcs11-devel-9.9.4-51.el7_4.4.x86_64.rpm bind-sdb-9.9.4-51.el7_4.4.x86_64.rpm bind-sdb-chroot-9.9.4-51.el7_4.4.x86_64.rpm Red Hat Enterprise Linux Server Optional E4S (v. 7.4): ppc64le: bind-debuginfo-9.9.4-51.el7_4.4.ppc64le.rpm bind-devel-9.9.4-51.el7_4.4.ppc64le.rpm bind-lite-devel-9.9.4-51.el7_4.4.ppc64le.rpm bind-pkcs11-devel-9.9.4-51.el7_4.4.ppc64le.rpm bind-sdb-9.9.4-51.el7_4.4.ppc64le.rpm bind-sdb-chroot-9.9.4-51.el7_4.4.ppc64le.rpm x86_64: bind-debuginfo-9.9.4-51.el7_4.4.i686.rpm bind-debuginfo-9.9.4-51.el7_4.4.x86_64.rpm bind-devel-9.9.4-51.el7_4.4.i686.rpm bind-devel-9.9.4-51.el7_4.4.x86_64.rpm bind-lite-devel-9.9.4-51.el7_4.4.i686.rpm bind-lite-devel-9.9.4-51.el7_4.4.x86_64.rpm bind-pkcs11-devel-9.9.4-51.el7_4.4.i686.rpm bind-pkcs11-devel-9.9.4-51.el7_4.4.x86_64.rpm bind-sdb-9.9.4-51.el7_4.4.x86_64.rpm bind-sdb-chroot-9.9.4-51.el7_4.4.x86_64.rpm Red Hat Enterprise Linux Server Optional TUS (v. 7.4): x86_64: bind-debuginfo-9.9.4-51.el7_4.4.i686.rpm bind-debuginfo-9.9.4-51.el7_4.4.x86_64.rpm bind-devel-9.9.4-51.el7_4.4.i686.rpm bind-devel-9.9.4-51.el7_4.4.x86_64.rpm bind-lite-devel-9.9.4-51.el7_4.4.i686.rpm bind-lite-devel-9.9.4-51.el7_4.4.x86_64.rpm bind-pkcs11-devel-9.9.4-51.el7_4.4.i686.rpm bind-pkcs11-devel-9.9.4-51.el7_4.4.x86_64.rpm bind-sdb-9.9.4-51.el7_4.4.x86_64.rpm bind-sdb-chroot-9.9.4-51.el7_4.4.x86_64.rpm These packages are GPG signed by Red Hat for security. Our key and details on how to verify the signature are available from https://access.redhat.com/security/team/key/ 7. References: https://access.redhat.com/security/cve/CVE-2020-8616 https://access.redhat.com/security/cve/CVE-2020-8617 https://access.redhat.com/security/updates/classification/#important 8. Contact: The Red Hat security contact is <secalert@redhat.com>. More contact details at https://access.redhat.com/security/team/contact/ Copyright 2020 Red Hat, Inc. -----BEGIN PGP SIGNATURE----- Version: GnuPG v1 iQIVAwUBXzPV8dzjgjWX9erEAQgCUA//dmZr/zZbkimNYOaBBZ00RvF26rGRA7yV yVgYREXrAF1lgd78GDJ7rL0Y1r7rIursw/la069kK4F8efbSG4o8b4VUtC85+E+Q O6crm0Dm17ns4a5ix97uliNk+H9tyjKPVW4aQFJujhSD+Dx5y9bOByfv8HFI4oh3 tCWmgFoPjcEpWMuIGR1saqrbFWN1Ukz3867jCLaWUr8b4A7XxngDPwd7qtceLpSW jYt5OaTIhOV3kjICJ5jY69S1D5Ab17/ObGfaq8nOJcRin+XvZgcfgWt00QI+mYkA ex63m8aGGE3o32MCS/6wsGY/4vP8U7XNe19f9JQTG8ZA4S/PdUJW7y5oRFEWgHg7 HtveWp+EkGyOB1HU7dRVVBP1lhMaWlz55WjhBoNc6xjV7Zi3IU/W1O85AOL8VtxX XzI6Gk+FWFOgocfLh7DexFOj+4iCtX7Ew3862PPwME1bXh4ijlKgkYvcotJCLCL6 IQGGLWIjIT8BBr1avjTBn998XBx3UxFzyo4QyQRB38fzKaYRXbMPXNWSmlq1CtA3 U0m5D2TVZGgVEH7/jlWHWzhNpO1TfhHEyyIDHWBpobATTVvToHeCdcQsDbZpuT3/ 8jdswGAx+PKQJI4Q4sPzsfXrXbUew/aS2kybTrkKVuGntIvY0C1EcLYZjbNHEKcG e/FXzzEtVBw\xd4RR -----END PGP SIGNATURE----- -- RHSA-announce mailing list RHSA-announce@redhat.com https://www.redhat.com/mailman/listinfo/rhsa-announce . Bugs fixed (https://bugzilla.redhat.com/): 1821583 - CVE-2020-8555 kubernetes: Server side request forgery (SSRF) in kube-controller-manager allows users to leak secret information 5. 7) - aarch64, ppc64le, s390x 3. Solution: For OpenShift Container Platform 4.3 see the following documentation, which will be updated shortly for release 4.3.25, for important instructions on how to upgrade your cluster and fully apply this asynchronous errata update: https://docs.openshift.com/container-platform/4.3/release_notes/ocp-4-3-rel ease-notes.html Details on how to access this content are available at https://docs.openshift.com/container-platform/4.3/updating/updating-cluster - -cli.html. Bugs fixed (https://bugzilla.redhat.com/): 1808130 - CVE-2020-1750 machine-config-operator-container: mmap stressor makes the cluster unresponsive 5. 7.7) - ppc64, ppc64le, s390x, x86_64 3. Description: OpenShift Virtualization is Red Hat's virtualization solution designed for Red Hat OpenShift Container Platform. Additional Changes: This update also fixes several bugs and adds various enhancements. This advisory contains the following OpenShift Virtualization 2.4.0 images: RHEL-7-CNV-2.4 ============== kubevirt-ssp-operator-container-v2.4.0-71 RHEL-8-CNV-2.4 ============== virt-cdi-controller-container-v2.4.0-29 virt-cdi-uploadproxy-container-v2.4.0-29 hostpath-provisioner-container-v2.4.0-25 virt-cdi-operator-container-v2.4.0-29 kubevirt-metrics-collector-container-v2.4.0-18 cnv-containernetworking-plugins-container-v2.4.0-36 kubevirt-kvm-info-nfd-plugin-container-v2.4.0-18 hostpath-provisioner-operator-container-v2.4.0-31 virt-cdi-uploadserver-container-v2.4.0-29 virt-cdi-apiserver-container-v2.4.0-29 virt-controller-container-v2.4.0-58 virt-cdi-cloner-container-v2.4.0-29 kubevirt-template-validator-container-v2.4.0-21 vm-import-operator-container-v2.4.0-21 kubernetes-nmstate-handler-container-v2.4.0-37 node-maintenance-operator-container-v2.4.0-27 virt-operator-container-v2.4.0-58 kubevirt-v2v-conversion-container-v2.4.0-23 cnv-must-gather-container-v2.4.0-73 virtio-win-container-v2.4.0-15 kubevirt-cpu-node-labeller-container-v2.4.0-19 ovs-cni-plugin-container-v2.4.0-37 kubevirt-vmware-container-v2.4.0-21 hyperconverged-cluster-operator-container-v2.4.0-70 virt-handler-container-v2.4.0-58 virt-cdi-importer-container-v2.4.0-29 virt-launcher-container-v2.4.0-58 kubevirt-cpu-model-nfd-plugin-container-v2.4.0-17 virt-api-container-v2.4.0-58 ovs-cni-marker-container-v2.4.0-38 kubemacpool-container-v2.4.0-39 cluster-network-addons-operator-container-v2.4.0-38 bridge-marker-container-v2.4.0-39 vm-import-controller-container-v2.4.0-21 hco-bundle-registry-container-v2.3.0-497 3. Bugs fixed (https://bugzilla.redhat.com/): 1684772 - virt-launcher images do not have the edk2-ovmf package installed 1716329 - missing Status, Version and Label for a number of CNV components, and Status term inconsistency 1724978 - [RFE][v2v] Improve the way we display progress percent in UI 1725672 - CDI: getting error with "unknown reason" when trying to create UploadTokenRequest for a none existing pvc 1727117 - [RFE] Reduce installed libvirt components 1780473 - Delete VM is hanging if the corresponding template does not exist anymore 1787213 - KubeMacpool may not work from time to time since it is skipped when we face certificate issue. 1789564 - Failed to allocate a SRIOV VF to VMI 1795889 - internal IP shown on VMI spec instead of public one on VMI with guest-agent 1796342 - VM Failing to start since hard disk not ready 1802554 - [SSP] cpu-feature-lahf_lm and Conroe are enabled on one worker (test issue) 1805044 - No mem/filesystem/Network Utilization in VM overview 1806288 - [CDI] fails to import images that comes from url that reject HEAD requests 1806436 - [SSP] Windows common templates - Windows10 should be removed from windows-server* templates, windows-server* should not have desktop version 1811111 - All the VM templates are visible in the developer catalog but not really/easily instantiable 1811417 - Failed to install cnv-2.4 on top of ocp 4.4 (hco operator in crashLoopBackOff state) 1816518 - [SSP] Common templates - template name under objects -> metadata -> labels should be identical to the template actual name 1817080 - node maintenance CRD is marked with NonStructuralSchema condition 1819252 - kubevirt-ssp-operator cannot create ServiceMonitor object 1820651 - CDI import fails using block volume (available size -1) 1821209 - Debug log message looks unprofessional 1822079 - nmstate-handler fails to start and keeps restarting 1822315 - status.desiredState: doesn't pick the correct value and is null 1823342 - Invalid qcow2 image causes HTTP range error and difficult to read stack trace 1823699 - [CNV-2.4] Failing to deploy NetworkAddons 1823701 - [CNV-2.4] when a single component is failing, HCO can continue reporting outdated negative conditions also on other components 1825801 - [CNV-2.4] Failing to deploy due issues in CRD of cluster network operator 1826044 - [CNV-2.4] Failing to deploy due issues in CRD of cluster host-path-provisioner operator 1827257 - VMs' connectivity is available even the two VMs are in different vlan 1828401 - misconfigured prow job e2e-aws-4.5-cnv resulting in step e2e-aws failed: step needs a lease but no lease client provided 1829376 - VMs with blank block volumes fail to spin up 1830780 - virt-v2v-wrapper - 0% VM migration progress in UI 1831536 - kubevirt-{handler,apiserver,controller} service accounts added to the privileged SCC 1832179 - [virt] VM with runStrategy attribute (instead of 'running' attribute) does not have 'RUNNING' state in cli 1832283 - [SSP operator] Common templates and template_validator are missing after clean installation 1832291 - SSP installation is successful even with some components missing 1832769 - [kubevirt version] is not reported correctly 1833220 - CVE-2020-10749 containernetworking/plugins: IPv6 router advertisements allow for MitM attacks on IPv4 clusters 1833376 - Hardcoded VMware-vix-disklib version 6 - import fail with version 7 1833786 - kubevirt hyperconverged-cluster-operator deploy_marketplace.sh fails in disconnected cluster 1834253 - VMs are stuck in Starting state 1835242 - Can't query SSP CRs after upgrade from 2.3 to 2.4 1835426 - [RFE] Provide a clear error message when VM and VMI name does not match 1836792 - [CNV deployment] kubevirt components are missing 1837182 - VMI virt-launcher reaches Error state after running for 10-24 hours 1837670 - Specifying "Ubuntu 18.04 LTS" force the Conroe CPU model 1838066 - [CNV deployment] kubevirt failing to create cpu-plugin-configmap obsoleteCPUs 1838424 - [Installation] CNV 2.4.0 virt-handler and kubevirt-node-labeller pods are not showing up 1839982 - [CNV][DOC] Lack of explanation for StorageClass default accessMode in openshift-cnv kubevirt-storage-class-defaults 1840047 - [CNV-2.4] virt-handler failing on /usr/bin/container-disk: no such file or directory 1840220 - [CNV-2.4] node-maintenance-operator failing to create deployment - invalid format of manifest 1840652 - Upgrade indication is missing 1841065 - [v2v] RHV to CNV: VM import fail on network mapping validation 1841325 - [CNV][V2V] VM migration fails if VMWare host isn't under Cluster but directly under Datacenter 1841505 - [CNV-2.4] virt-template-validator container fails to start 1842869 - vmi cannot be scheduled, because node labeller doesn't report correct labels 1842958 - [SSP] Fail to create Windows VMs from templates - windows-cd-bus validation added but cdrom is missing from the template 1843219 - node-labeller SCC is privileged, which appears too relaxed 1843456 - virt-launcher goes from running to error state due to panic: timed out waiting for domain to be defined 1843467 - [CNV network KMP] kubemacpool causes worker node to be Ready,SchedulingDisabled 1843519 - HCO CR is not listed when running "kubectl get all" from command line 1843948 - [Network operator] Upgrade from 2.3 to 2.4 - Network operator fails to upgrade ovs-cni pods, upgrade is not completed 1844057 - [CNV-2.4] cluster-network-addons-operator failing to start 1844105 - [SSP operator] Upgrade from 2.3.0 to 2.4.0- SSP operator fails to upgrade node labeller and template validator 1844907 - kubemacpool deployment status errors regarding replicas 1845060 - Node-labeller is in pending state when node doesn't have kvm device 1845061 - Version displayed in Container Native Virtualization OperatorHub side panel 1845477 - [SSP] Template validator fails to "Extract the CA bundle"; template validator is not called when a VM is created 1845557 - [CNV-2.4] template validator webhook fails with certification issues 1845604 - [v2v] RHV to CNV VM import: Prevent a second vm-import from starting. 1845899 - [CNV-2.5] cluster-network-addons-operator failing to start 1845901 - Filesystem corruption related to smart clone 1847070 - vmi cannot be scheduled , qemu-kvm core dump 1847594 - pods in openshift-cnv namespace no longer have openshift.io/scc under metadata.annotations 1848004 - [CNV-2.5] Deployment fails on NetworkAddonsConfigNotAvailable 1848007 - [CNV-2.4] Deployment fails on NetworkAddonsConfigNotAvailable 1848951 - CVE-2020-14316 kubevirt: VMIs can be used to access host files 1849527 - [v2v] [api] VM import RHV to CNV importer should stop send requests to RHV if they are rejected because of wrong user/pass 1849915 - [v2v] VM import RHV to CNV: The timezone data is not available in the vm-import-controller image. 1850425 - [v2v][VM import RHV to CNV] Add validation for network target type in network mapping 1850467 - [v2v] [api] VM import RHV to CNV invalid target network type should not crash the controller 1850482 - [v2v][VM import from RHV to CNV] 2 nics are mapped to a new network though second was mapped to pod. 1850937 - kubemacpool fails in a specific order of components startup 1851856 - Deployment not progressing due to PriorityClass missing 1851886 - [CNV][V2V] VMWare pod is failing when running wizard to migrate from RHV 1852446 - [v2v][RHV to CNV VM import] Windows10 VM import fail on: timezone is not UTC-compatible 1853028 - CNV must-gather failure on CNV-QE BM-RHCOS environment 1853133 - [CNV-2.4] Deployment fails on KubeVirtMetricsAggregationNotAvailable 1853373 - virtctl image-upload fails to upload an image if the dv name includes a "." 1854419 - [Re-brand] Align CSV 1854744 - To stabilize some tests I need to backport PRs which change production code 1855256 - [v2v][RHV to CNV VM import] Empty directories created for vm-import-operator/controller logs in cnv-must-gather 1856438 - [CNAO] Upgrade is not completed (wrong operatorVersion), CR is not updated. 1856447 - CNV upgrade - HCO fails to identify wrong observedVersion in CR, HCO is reported as READY 1856979 - Domain notify errors break VMI migrations and graceful shutdown 5

AFFECTED PRODUCTS

CVSS

PROBLEMTYPE DATA

CONFIGURATIONS

PATCH

EXTERNAL IDS

REFERENCES

CREDITS

Red Hat

SOURCES

LAST UPDATE DATE

2025-09-22T21:09:57.771000+00:00

SOURCES UPDATE DATE

SOURCES RELEASE DATE