Alerts This Week
Warning Icon 1 727
Alerts This Week
Warning Icon 1 727

RedHat: RHSA-2021-2077-01 Important: Openvswitch DoS and Buffer Overflow

red hat
Calendar Grey May 20, 2021
Dist Redhat Esm H88
The recent patch for openvswitch in Red Hat Enterprise Linux 7 resolves critical vulnerabilities and introduces effective measures.
An update for openvswitch is now available in Fast Datapath for Red Hat Enterprise Linux 7

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):
* lldpd: buffer overflow in the lldp_decode function in daemon/protocols/lldp.c (CVE-2015-8011)
* 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)

Topics%20covered

Topics Covered

security advisory security update Red Hat buffer overflow DoS security fix openvswitch Fast Datapath

References

https://access.redhat.com/security/cve/CVE-2015-8011 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#important https://access.redhat.com/security/updates/classification#important

Package List

Fast Datapath for Red Hat Enterprise Linux 7:
Source: openvswitch-2.9.9-1.el7fdp.src.rpm
noarch: openvswitch-test-2.9.9-1.el7fdp.noarch.rpm
ppc64le: openvswitch-2.9.9-1.el7fdp.ppc64le.rpm openvswitch-debuginfo-2.9.9-1.el7fdp.ppc64le.rpm openvswitch-devel-2.9.9-1.el7fdp.ppc64le.rpm python-openvswitch-2.9.9-1.el7fdp.ppc64le.rpm
s390x: openvswitch-2.9.9-1.el7fdp.s390x.rpm openvswitch-debuginfo-2.9.9-1.el7fdp.s390x.rpm openvswitch-devel-2.9.9-1.el7fdp.s390x.rpm python-openvswitch-2.9.9-1.el7fdp.s390x.rpm
x86_64: openvswitch-2.9.9-1.el7fdp.x86_64.rpm openvswitch-debuginfo-2.9.9-1.el7fdp.x86_64.rpm openvswitch-devel-2.9.9-1.el7fdp.x86_64.rpm python-openvswitch-2.9.9-1.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


Severity
important
Lowest
Low
Medium
High
Critical

Advisory ID: RHSA-2021:2077-01
Product: Fast Datapath
Advisory URL: https://access.redhat.com/errata/RHSA-2021:2077
Issue date: 2021-05-20

Topic

An update for openvswitch is now available in Fast Datapath for Red HatEnterprise Linux 7.Red Hat Product Security has rated this update as having a security impactof Important. A Common Vulnerability Scoring System (CVSS) base score,which gives a detailed severity rating, is available for each vulnerabilityfrom the CVE link(s) in the References section.

Topics%20covered

Topics Covered

security advisory security update Red Hat buffer overflow DoS security fix openvswitch Fast Datapath

Relevant Releases Architectures

Fast Datapath for Red Hat Enterprise Linux 7 - noarch, ppc64le, s390x, x86_64

Bugs Fixed

1896536 - CVE-2015-8011 lldpd: buffer overflow in the lldp_decode function in daemon/protocols/lldp.c

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

1950032 - Update openvswitch to 2.9.9

Get the latest News and Insights

Get the latest Linux and open source security news straight to your inbox.

Your message here