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Red Hat Security Advisory 2021-1050-01

Red Hat Security Advisory 2021-1050-01
Posted Mar 31, 2021
Authored by Red Hat | Site access.redhat.com

Red Hat Security Advisory 2021-1050-01 - Open vSwitch provides standard network bridging functions and support for the OpenFlow protocol for remote per-flow control of traffic. Issues addressed include denial of service and memory leak vulnerabilities.

tags | advisory, remote, denial of service, vulnerability, protocol, memory leak
systems | linux, redhat
advisories | CVE-2020-27827, CVE-2020-35498
MD5 | 5ff8aca5506d26ec6be3fd12d445df48

Red Hat Security Advisory 2021-1050-01

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====================================================================
Red Hat Security Advisory

Synopsis: Moderate: openvswitch2.11 security update
Advisory ID: RHSA-2021:1050-01
Product: Red Hat Virtualization
Advisory URL: https://access.redhat.com/errata/RHSA-2021:1050
Issue date: 2021-03-31
CVE Names: CVE-2020-27827 CVE-2020-35498
====================================================================
1. Summary:

An update for openvswitch2.11 is now available in Red Hat Virtualization.

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. Relevant releases/architectures:

Red Hat Virtualization 4 Management Agent for RHEL 7 Hosts - ppc64le, x86_64

3. Description:

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.

4. 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/):

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

6. Package List:

Red Hat Virtualization 4 Management Agent for RHEL 7 Hosts:

Source:
openvswitch2.11-2.11.3-86.el7fdp.src.rpm
ovn2.11-2.11.1-57.el7fdp.src.rpm

ppc64le:
openvswitch2.11-2.11.3-86.el7fdp.ppc64le.rpm
openvswitch2.11-debuginfo-2.11.3-86.el7fdp.ppc64le.rpm
openvswitch2.11-devel-2.11.3-86.el7fdp.ppc64le.rpm
ovn2.11-2.11.1-57.el7fdp.ppc64le.rpm
ovn2.11-debuginfo-2.11.1-57.el7fdp.ppc64le.rpm
ovn2.11-host-2.11.1-57.el7fdp.ppc64le.rpm
ovn2.11-vtep-2.11.1-57.el7fdp.ppc64le.rpm
python-openvswitch2.11-2.11.3-86.el7fdp.ppc64le.rpm

x86_64:
openvswitch2.11-2.11.3-86.el7fdp.x86_64.rpm
openvswitch2.11-debuginfo-2.11.3-86.el7fdp.x86_64.rpm
openvswitch2.11-devel-2.11.3-86.el7fdp.x86_64.rpm
ovn2.11-2.11.1-57.el7fdp.x86_64.rpm
ovn2.11-debuginfo-2.11.1-57.el7fdp.x86_64.rpm
ovn2.11-host-2.11.1-57.el7fdp.x86_64.rpm
ovn2.11-vtep-2.11.1-57.el7fdp.x86_64.rpm
python-openvswitch2.11-2.11.3-86.el7fdp.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-2020-27827
https://access.redhat.com/security/cve/CVE-2020-35498
https://access.redhat.com/security/updates/classification/#moderate

8. 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.
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