First published: Mon Mar 15 2021(Updated: )
Open vSwitch provides standard network bridging functions and support for the OpenFlow protocol for remote per-flow control of traffic.<br>Security Fix(es):<br><li> openvswitch: limitation in the OVS packet parsing in userspace leads to DoS</li> (CVE-2020-35498)<br><li> lldp/openvswitch: denial of service via externally triggered memory leak</li> (CVE-2020-27827)<br>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.
Affected Software | Affected Version | How to fix |
---|---|---|
redhat/openvswitch2.11 | <2.11.3-83.el8fd | 2.11.3-83.el8fd |
redhat/network-scripts-openvswitch2.11 | <2.11.3-83.el8fd | 2.11.3-83.el8fd |
redhat/openvswitch2.11-debuginfo | <2.11.3-83.el8fd | 2.11.3-83.el8fd |
redhat/openvswitch2.11-debugsource | <2.11.3-83.el8fd | 2.11.3-83.el8fd |
redhat/openvswitch2.11-devel | <2.11.3-83.el8fd | 2.11.3-83.el8fd |
redhat/openvswitch2.11-test | <2.11.3-83.el8fd | 2.11.3-83.el8fd |
redhat/python3-openvswitch2.11 | <2.11.3-83.el8fd | 2.11.3-83.el8fd |
redhat/python3-openvswitch2.11-debuginfo | <2.11.3-83.el8fd | 2.11.3-83.el8fd |
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The severity of RHSA-2021:0837 is classified as moderate.
To fix RHSA-2021:0837, you should update the affected packages to version 2.11.3-83.el8fd or later.
The affected packages for RHSA-2021:0837 include openvswitch2.11, network-scripts-openvswitch2.11, and python3-openvswitch2.11, among others.
RHSA-2021:0837 addresses a denial of service vulnerability due to limitations in OVS packet parsing in userspace.
If you cannot update the packages related to RHSA-2021:0837, consider implementing temporary mitigations such as monitoring for unusual traffic patterns.