ID

VAR-202103-0218

CVE

CVE-2020-27827

TITLE

Open vSwitch  Resource Depletion Vulnerability

DESCRIPTION

A flaw was found in multiple versions of OpenvSwitch. Specially crafted LLDP packets can cause memory to be lost when allocating data to handle specific optional TLVs, potentially causing a denial of service. The highest threat from this vulnerability is to system availability. Open vSwitch Is vulnerable to a resource exhaustion.Denial of service (DoS) It may be put into a state. Canonical Ubuntu is a set of desktop application-based GNU/Linux operating system developed by British company Canonical. A security vulnerability exists in the Ubuntu lldp software that could be exploited by an attacker to trigger a denial of service attack. The following products and models are affected: Ubuntu 20.10 openvswitch-common, Ubuntu 20.04 LTS openvswitch-common Ubuntu 18.04 LTS openvswitch-common, Ubuntu 16.04 LTS: openvswitch-common. For the stable distribution (buster), these problems have been fixed in version 2.10.6+ds1-0+deb10u1. For the detailed security status of openvswitch please refer to its security tracker page at: https://security-tracker.debian.org/tracker/openvswitch Further information about Debian Security Advisories, how to apply these updates to your system and frequently asked questions can be found at: https://www.debian.org/security/ Mailing list: debian-security-announce@lists.debian.org -----BEGIN PGP SIGNATURE----- iQIzBAEBCgAdFiEEtuYvPRKsOElcDakFEMKTtsN8TjYFAmALHj0ACgkQEMKTtsN8 TjaYHw/6Atkb8+AS+g8R3FpNe0L+Eqie3RzZ1ZOhbJTvkBzeKdusw4dNk7DfsbJt uy/b2hHvooR+MQVpxeDXD/Azpf+k7b1m3LZ7P/fKKsXDmuMX6jge8rai8DZyJdfI IRYjU+yqd6z9ytKRg8bPcXgG/1hmdMznunBdpdLKQnmtH2EsVrflAaqAkABqVjO6 X0NHzUsRrI0yXWLDI3pqD7bc8Oq/TFtHi6BCBVxk3VPegBC3CzAelPfHu5KJeSKC lOyrmc+ut/HbXJexRFzkrrNQsYB2M7/ZgJLv0XQmYaP7vnpu09xaaqYBreCIp8Q9 DZmCy9pLVzop0WNJzdLnRbwhBB2eBZF6qyax6ldvifcN/QAnLLC4Zzg1eNdktrPE Dq9rJ/6U56DycmqKrlyKvlpTHM0IJ4+4TI5yM4OL2/wDkT/Mfjr7lwQbo/Xafy/X +vviNQGFd2z/8aIdkc0auPhGle/VME+mlBBLCNU47HrfaWTIR94PFjKfmTL/9dzM VRz6TfS5yG9kCi9H1xB/94q50no186IVUh5+Jr7SnfCr0sSm5ahNIIEtg5lmvqHd pUDZD7tO0uvcMUIV06xXSealz1ECKzwB0ZaJYfngOZ/KnBr7opZsDXm0wRVZdSBN DFZQX3XNSM1Gi0xHlV6uYQgi2HRuPk5QdW2TqmEN7XUNeQ9xdpI= =BZCg -----END PGP SIGNATURE----- . Description: Open vSwitch provides standard network bridging functions and support for the OpenFlow protocol for remote per-flow control of traffic. Bug Fix(es): * [RFE] Add auto load balance params (BZ#1920121) 4. -----BEGIN PGP SIGNED MESSAGE----- Hash: SHA256 ===================================================================== Red Hat Security Advisory Synopsis: Moderate: OpenShift Container Platform 4.7.4 security update Advisory ID: RHSA-2021:0957-01 Product: Red Hat OpenShift Enterprise Advisory URL: https://access.redhat.com/errata/RHSA-2021:0957 Issue date: 2021-03-30 CVE Names: CVE-2020-27827 CVE-2020-35498 CVE-2021-3114 ===================================================================== 1. Summary: Red Hat OpenShift Container Platform release 4.7.4 is now available with updates to packages and images that fix several bugs and add enhancements. Red Hat Product Security has rated this update as having a security impact of Moderate. 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. Description: Red Hat OpenShift Container Platform is Red Hat's cloud computing Kubernetes application platform solution designed for on-premise or private cloud deployments. Red Hat OpenShift Container Platform is Red Hat's cloud computing Kubernetes application platform solution designed for on-premise or private cloud deployments. This advisory contains the container images for Red Hat OpenShift Container Platform 4.7.4. See the following advisory for the RPM packages for this release: https://access.redhat.com/errata/RHSA-2021:0958 Space precludes documenting all of the container images in this advisory. See the following Release Notes documentation, which will be updated shortly for this release, for details about these changes: https://docs.openshift.com/container-platform/4.7/release_notes/ocp-4-7-rel ease-notes.html This update fixes the following bugs among others: * A flaw was found in golang: crypto/elliptic, in which P-224 keys as generated could return incorrect inputs, which reduced the strength of the cryptography. (BZ#1918750) * This update adds new capabilities to the Baremetal Operator, allowing for different reboot modes to be utilized. This allows workloads to be relocated as quickly as possible in the event of a node failure. Additionally, it provides a path for clients to quickly power down systems for remediation purposes and to recover workloads. As a result, workload recovery time is significantly reduced. (BZ#1936407) You may download the oc tool and use it to inspect release image metadata as follows: (For x86_64 architecture) $ oc adm release info quay.io/openshift-release-dev/ocp-release:4.6.20-x86_64 The image digest is sha256:999a6a4bd731075e389ae601b373194c6cb2c7b4dadd1ad06ef607e86476b129 (For s390x architecture) $ oc adm release info quay.io/openshift-release-dev/ocp-release:4.6.20-s390x The image digest is sha256:90be6b7e97d8da9fbb2afc7fe6d7dd4da6265fb847ec440e46bda1a25c224b0c (For ppc64le architecture) $ oc adm release info quay.io/openshift-release-dev/ocp-release:4.6.20-ppc64le The image digest is sha256:475367e4991d6e8ea3617cf3dfe2dd472db76a89f23484f118932d6bdd6f53e9 Security Fix(es): * golang: crypto/elliptic: incorrect operations on the P-224 curve (CVE-2021-3114) 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. All OpenShift Container Platform 4.7 users are advised to upgrade to these updated packages and images when they are available in the appropriate release channel. To check for available updates, use the OpenShift Console or the CLI oc command. Instructions for upgrading a cluster are available at https://docs.openshift.com/container-platform/4.7/updating/updating-cluster - -between-minor.html#understanding-upgrade-channels_updating-cluster-between - -minor. 3. Solution: For OpenShift Container Platform 4.7 see the following documentation, which will be updated shortly for this release, for important instructions on how to upgrade your cluster and fully apply this asynchronous errata update: https://docs.openshift.com/container-platform/4.7/release_notes/ocp-4-7-rel ease-notes.html Details on how to access this content are available at https://docs.openshift.com/container-platform/4.7/updating/updating-cluster - -cli.html. 4. Bugs fixed (https://bugzilla.redhat.com/): 1910352 - When creating a worker with a used mac-address stuck on registering 1918750 - CVE-2021-3114 golang: crypto/elliptic: incorrect operations on the P-224 curve 1922417 - Issue configuring nodes with VLAN and teaming 1927554 - [sig-devex][Feature:ImageEcosystem][Slow] openshift sample application repositories rails/nodejs/cakephp 1929257 - The KubeletConfigController cannot process multiple confs for a pool/ pool changes 1929371 - 4.7 CNO claims to be done upgrading before it even starts 1929721 - Enable host-based disk encryption on Azure platform 1930106 - Cannot IPI with tang/tpm disk encryption 1930152 - Web console crashes during VM creation from template when no storage classes are defined 1931401 - test: openshift-tests.[sig-cli] oc observe works as expected [Suite:openshift/conformance/parallel] 1931863 - NetworkManager overlay FS not being created on None platform 1931950 - Whereabouts IPv6 addresses not calculated when leading hextets equal 0 1933839 - Panic in OLM packageserver when invoking webhook authorization endpoint 1934645 - [4.7z] Need BFD failover capability on ECMP routes 1935636 - High RAM usage on machine api termination node system oom 1936707 - New CSV using ServiceAccount named "default" stuck in Pending during upgrade 1936803 - Support ServiceBinding 0.5.0+ 1936861 - (release-4.7] Configmap gatherer doesn't include namespace name (in the archive path) in case of a configmap with binary data 1937313 - Topology view - vm details screen isntt stop loading 1937469 - Pod/node/ip/template isn't showing when vm is running 1937695 - ironic image "/" cluttered with files 1937829 - ovn-kube must handle single-stack to dual-stack migration 1937998 - [4.7] wrong community catalog image reference 1938405 - catalog operator causing CPU spikes and bad etcd performance 1939218 - Images built on OCP 4.6 clusters create manifests that result in quay.io (and other registries) rejecting those manifests 1939278 - Backport Avoid node disruption when kube-apiserver-to-kubelet-signer is rotated 1939477 - CI tests using openshift/hello-world broken by Ruby Version Update 1940283 - [VPA] Updater failed to trigger evictions due to "vpa-admission-controller" not found 1941297 - OCP-Metal images 5. References: https://access.redhat.com/security/cve/CVE-2020-27827 https://access.redhat.com/security/cve/CVE-2020-35498 https://access.redhat.com/security/cve/CVE-2021-3114 https://access.redhat.com/security/updates/classification/#moderate 6. Contact: The Red Hat security contact is <secalert@redhat.com>. More contact details at https://access.redhat.com/security/team/contact/ Copyright 2021 Red Hat, Inc. -----BEGIN PGP SIGNATURE----- Version: GnuPG v1 iQIVAwUBYGKzb9zjgjWX9erEAQj7Iw/+PfX6ucF71yzOz1uCYviLerogcA+o1gFQ v5N+fASsbYGvIR1G5NW/SZ/4mW/UadNDHPSafGyp0F2eHt05tXbrEWQevf4HerTT teAJItQyPRML13mzC+5CSi6IfLzuyYAHVQQP6nxv/5z0xrI8SjiQaXIGHWmlweVy mCGVAiRhsJkONh5tz3cIrH9IrDpvgMuJXgfZum2d9fPMOS9VMcjjDh3peDqolu3A RMKIgEb6PSHFSaco/gbWnTvOTAKuEI8bLLWmR9fa9+Svj7fxtWV6FXwzxkrOHDp4 l6pS+Sre9Azhoffq9WxF6IGQf0qlHkA1RkKgrlLvZcRY3xFpjOiN5enoy/6w2j5M d28j7WXTIVDHqXWK26HLLpqNTJd46zfjL54Kh8CzuwrfvGp3hdjx81sbY1gp0RXo KjAUbeAOwMoUKl9FqBOKYG+AiHOUuZcXAxlz1sYdEd3QrA5ApY8rQhRakLLjPrVP 7N8BchpHQ7SLcxHPpvMOjfQrDGhjEG7L3VisZmIqH1MYlqvrwCS+g7SYyamFW4V7 JuHOn3pMNdgSV3F5Xy2sxHYo1fZ9gmU42G+aOw3FCq/nUOOWfURgtXAGWlTWMmJE wO2zi4JHAcvnkT5yDVtIX8JAfxY8ZBZTr/mCKPOomEh6a386AQvf6N9shFKy2lhL xTyfIBuAwy8= =GeCF -----END PGP SIGNATURE----- -- RHSA-announce mailing list RHSA-announce@redhat.com https://listman.redhat.com/mailman/listinfo/rhsa-announce . Relevant releases/architectures: RHEL 7-based RHEV-H for RHEV 4 (build requirements) - noarch, x86_64 Red Hat Virtualization 4 Hypervisor for RHEL 7 - noarch 3. Description: The redhat-virtualization-host packages provide the Red Hat Virtualization Host. These packages include redhat-release-virtualization-host. Red Hat Virtualization Hosts (RHVH) are installed using a special build of Red Hat Enterprise Linux with only the packages required to host virtual machines. RHVH features a Cockpit user interface for monitoring the host's resources and performing administrative tasks. Security Fix(es): * lldp/openvswitch: denial of service via externally triggered memory leak (CVE-2020-27827) For more details about the security issue(s), including the impact, a CVSS score, and other related information, refer to the CVE page(s) listed in the References section. Solution: Before applying this update, make sure all previously released errata relevant to your system have been applied. For details on how to apply this update, refer to: https://access.redhat.com/articles/2974891 5. Bugs fixed (https://bugzilla.redhat.com/): 1921438 - CVE-2020-27827 lldp/openvswitch: denial of service via externally triggered memory leak 1924062 - Rebase RHV-H 4.3 EUS on RHEL 7.9.z #4 1932859 - Rebase RHV-H 4.3.14 on FDP 2.11 (21B) 1940841 - Include updated gluster-ansible-features in RHV-H 4.3 6. Package List: Red Hat Virtualization 4 Hypervisor for RHEL 7: Source: redhat-virtualization-host-4.3.14-20210322.0.el7_9.src.rpm noarch: redhat-virtualization-host-image-update-4.3.14-20210322.0.el7_9.noarch.rpm RHEL 7-based RHEV-H for RHEV 4 (build requirements): Source: redhat-release-virtualization-host-4.3.14-2.el7ev.src.rpm redhat-virtualization-host-4.3.14-20210322.0.el7_9.src.rpm noarch: redhat-virtualization-host-image-update-4.3.14-20210322.0.el7_9.noarch.rpm redhat-virtualization-host-image-update-placeholder-4.3.14-2.el7ev.noarch.rpm x86_64: redhat-release-virtualization-host-4.3.14-2.el7ev.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

AFFECTED PRODUCTS

CVSS

PROBLEMTYPE DATA

THREAT TYPE

remote

TYPE

resource management error

PATCH

EXTERNAL IDS

REFERENCES

CREDITS

Red Hat

SOURCES

LAST UPDATE DATE

2025-11-21T21:07:56.343000+00:00

SOURCES UPDATE DATE

SOURCES RELEASE DATE