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Red Hat: RHSA-2021-0497 Moderate: Openvswitch DoS Fix for RHEL 8

red hat
Calendar Grey February 11, 2021
Dist Redhat Esm H88
New release for openvswitch2.13 in Red Hat Enterprise Linux 8 includes important security enhancements and various bug resolutions.
An update for openvswitch2.13 is now available for Fast Datapath for Red Hat Enterprise Linux 8

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

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.
Bug Fix(es):
* [RFE] Add auto load balance params (BZ#1920121)

Topics%20covered

Topics Covered

security advisory moderate denial of service red hat DoS issue bug fix Red Hat Enterprise Linux networking 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: openvswitch2.13-2.13.0-79.5.el8fdp.src.rpm
noarch: openvswitch2.13-test-2.13.0-79.5.el8fdp.noarch.rpm
ppc64le: network-scripts-openvswitch2.13-2.13.0-79.5.el8fdp.ppc64le.rpm openvswitch2.13-2.13.0-79.5.el8fdp.ppc64le.rpm openvswitch2.13-debuginfo-2.13.0-79.5.el8fdp.ppc64le.rpm openvswitch2.13-debugsource-2.13.0-79.5.el8fdp.ppc64le.rpm openvswitch2.13-devel-2.13.0-79.5.el8fdp.ppc64le.rpm openvswitch2.13-ipsec-2.13.0-79.5.el8fdp.ppc64le.rpm python3-openvswitch2.13-2.13.0-79.5.el8fdp.ppc64le.rpm python3-openvswitch2.13-debuginfo-2.13.0-79.5.el8fdp.ppc64le.rpm
s390x: network-scripts-openvswitch2.13-2.13.0-79.5.el8fdp.s390x.rpm openvswitch2.13-2.13.0-79.5.el8fdp.s390x.rpm openvswitch2.13-debuginfo-2.13.0-79.5.el8fdp.s390x.rpm openvswitch2.13-debugsource-2.13.0-79.5.el8fdp.s390x.rpm openvswitch2.13-devel-2.13.0-79.5.el8fdp.s390x.rpm openvswitch2.13-ipsec-2.13.0-79.5.el8fdp.s390x.rpm python3-openvswitch2.13-2.13.0-79.5.el8fdp.s390x.rpm python3-openvswitch2.13-debuginfo-2.13.0-79.5.el8fdp.s390x.rpm
x86_64: network-scripts-openvswitch2.13-2.13.0-79.5.el8fdp.x86_64.rpm openvswitch2.13-2.13.0-79.5.el8fdp.x86_64.rpm openvswitch2.13-debuginfo-2.13.0-79.5.el8fdp.x86_64.rpm

Read the Full Advisory


Advisory ID: RHSA-2021:0497-01
Product: Fast Datapath
Advisory URL: https://access.redhat.com/errata/RHSA-2021:0497
Issue date: 2021-02-11

Topic

An update for openvswitch2.13 is now available for Fast Datapath for RedHat Enterprise 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 moderate denial of service red hat DoS issue bug fix Red Hat Enterprise Linux networking 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

1920121 - [RFE] Add auto load balance params

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

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