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RedHat 8 RHSA-2021-0837-01 Moderate Openvswitch DoS Threat

red hat
Calendar Grey March 15, 2021
Dist Redhat Esm H88
A new update has been released for openvswitch2.11 on Red Hat Enterprise Linux 8, resolving moderate security vulnerabilities and their potential effects.
An update for openvswitch2.11 is now available in Fast Datapath for Red Hat Enterprise Linux 8

Solution

For details on how to apply this update, refer to:

https://access.redhat.com/articles/11258

Summary

Open vSwitch provides standard network bridging functions and support for the OpenFlow protocol for remote per-flow control of traffic.
Security Fix(es):
* openvswitch: limitation in the OVS packet parsing in userspace leads to DoS (CVE-2020-35498)
* 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, acknowledgments, and other related information, refer to the CVE page(s) listed in the References section.

Topics%20covered

Topics Covered

security advisory network security Red Hat DoS issue DoS moderate impact security impact openvswitch Fast Datapath

References

https://access.redhat.com/security/cve/CVE-2020-27827 https://access.redhat.com/security/cve/CVE-2020-35498 https://access.redhat.com/security/updates/classification#moderate

Package List

Fast Datapath for Red Hat Enterprise Linux 8:
Source: openvswitch2.11-2.11.3-83.el8fdp.src.rpm
noarch: openvswitch2.11-test-2.11.3-83.el8fdp.noarch.rpm
ppc64le: network-scripts-openvswitch2.11-2.11.3-83.el8fdp.ppc64le.rpm openvswitch2.11-2.11.3-83.el8fdp.ppc64le.rpm openvswitch2.11-debuginfo-2.11.3-83.el8fdp.ppc64le.rpm openvswitch2.11-debugsource-2.11.3-83.el8fdp.ppc64le.rpm openvswitch2.11-devel-2.11.3-83.el8fdp.ppc64le.rpm python3-openvswitch2.11-2.11.3-83.el8fdp.ppc64le.rpm python3-openvswitch2.11-debuginfo-2.11.3-83.el8fdp.ppc64le.rpm
s390x: network-scripts-openvswitch2.11-2.11.3-83.el8fdp.s390x.rpm openvswitch2.11-2.11.3-83.el8fdp.s390x.rpm openvswitch2.11-debuginfo-2.11.3-83.el8fdp.s390x.rpm openvswitch2.11-debugsource-2.11.3-83.el8fdp.s390x.rpm openvswitch2.11-devel-2.11.3-83.el8fdp.s390x.rpm python3-openvswitch2.11-2.11.3-83.el8fdp.s390x.rpm python3-openvswitch2.11-debuginfo-2.11.3-83.el8fdp.s390x.rpm
x86_64: network-scripts-openvswitch2.11-2.11.3-83.el8fdp.x86_64.rpm openvswitch2.11-2.11.3-83.el8fdp.x86_64.rpm openvswitch2.11-debuginfo-2.11.3-83.el8fdp.x86_64.rpm openvswitch2.11-debugsource-2.11.3-83.el8fdp.x86_64.rpm openvswitch2.11-devel-2.11.3-83.el8fdp.x86_64.rpm python3-openvswitch2.11-2.11.3-83.el8fdp.x86_64.rpm

Read the Full Advisory


Advisory ID: RHSA-2021:0837-01
Product: Fast Datapath
Advisory URL: https://access.redhat.com/errata/RHSA-2021:0837
Issue date: 2021-03-15

Topic

An update for openvswitch2.11 is now available in Fast Datapath for Red HatEnterprise Linux 8.Red Hat Product Security has rated this update as having a security impactof Moderate. A Common Vulnerability Scoring System (CVSS) base score, whichgives a detailed severity rating, is available for each vulnerability fromthe CVE link(s) in the References section.

Topics%20covered

Topics Covered

security advisory network security Red Hat DoS issue DoS moderate impact security impact openvswitch Fast Datapath

Relevant Releases Architectures

Fast Datapath for Red Hat Enterprise Linux 8 - noarch, ppc64le, s390x, x86_64

Bugs Fixed

1908845 - CVE-2020-35498 openvswitch: limitation in the OVS packet parsing in userspace leads to DoS

1921438 - CVE-2020-27827 lldp/openvswitch: denial of service via externally triggered memory leak

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