Linux Security
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    Debian LTS: DLA-2571-1: openvswitch security update

    Date 19 Feb 2021
    Posted By LinuxSecurity Advisories
    Several issues have been found in openvswitch, a production quality, multilayer, software-based, Ethernet virtual switch.
    - -------------------------------------------------------------------------
    Debian LTS Advisory DLA-2571-1                This email address is being protected from spambots. You need JavaScript enabled to view it.                    Thorsten Alteholz
    February 19, 2021                   
    - -------------------------------------------------------------------------
    Package        : openvswitch
    Version        : 2.6.10-0+deb9u1
    CVE ID         : CVE-2015-8011 CVE-2017-9214 CVE-2018-17204 CVE-2018-17206
                      CVE-2020-27827 CVE-2020-35498
    Several issues have been found in openvswitch, a production quality, 
    multilayer, software-based, Ethernet virtual switch.
         Denial of service attacks, in which crafted network packets
         could cause the packet lookup to ignore network header fields
         from layers 3 and 4. The crafted network packet is an ordinary
         IPv4 or IPv6 packet with Ethernet padding length above 255 bytes.
         This causes the packet sanity check to abort parsing header
         fields after layer 2.
         Denial of service attacks using crafted LLDP packets.
         Buffer over-read issue during BUNDLE action decoding.
         Assertion failure due to not validating information (group type
         and command) in OF1.5 decoder.
         Buffer over-read that is caused by an unsigned integer underflow.
         Buffer overflow in the lldp_decode function in
         daemon/protocols/lldp.c in lldpd before 0.8.0 allows remote
         attackers to cause a denial of service (daemon crash) and
         possibly execute arbitrary code via vectors involving large
         management addresses and TLV boundaries.
    For Debian 9 stretch, these problems have been fixed in version
    2.6.10-0+deb9u1. This version is a new upstream point release.
    We recommend that you upgrade your openvswitch packages.
    For the detailed security status of openvswitch please refer to
    its security tracker page at:
    Further information about Debian LTS security advisories, how to apply
    these updates to your system and frequently asked questions can be
    found at:


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