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CentOS Linux: CVE-2018-17204: Moderate: openvswitch security, bug fix, and enhancement update (CESA-2018:3500)

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CentOS Linux: CVE-2018-17204: Moderate: openvswitch security, bug fix, and enhancement update (CESA-2018:3500)

Severity
4
CVSS
(AV:N/AC:L/Au:S/C:N/I:N/A:P)
Published
09/19/2018
Created
08/29/2019
Added
08/28/2019
Modified
05/25/2023

Description

An issue was discovered in Open vSwitch (OvS) 2.7.x through 2.7.6, affecting parse_group_prop_ntr_selection_method in lib/ofp-util.c. When decoding a group mod, it validates the group type and command after the whole group mod has been decoded. The OF1.5 decoder, however, tries to use the type and command earlier, when it might still be invalid. This causes an assertion failure (via OVS_NOT_REACHED). ovs-vswitchd does not enable support for OpenFlow 1.5 by default.

Solution(s)

  • centos-upgrade-openvswitch
  • centos-upgrade-openvswitch-debuginfo
  • centos-upgrade-openvswitch-devel
  • centos-upgrade-openvswitch-ovn-central
  • centos-upgrade-openvswitch-ovn-common
  • centos-upgrade-openvswitch-ovn-host
  • centos-upgrade-openvswitch-ovn-vtep
  • centos-upgrade-openvswitch-test
  • centos-upgrade-python-openvswitch

References

  • CVE-2018-17204
  • RHSA-2018:3500
  • RHSA-2019:0053
  • RHSA-2019:0081

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