Upstream information

CVE-2018-17204 at MITRE

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.

SUSE information

Overall state of this security issue: Resolved

This issue is currently rated as having moderate severity.

CVSS v2 Scores
  National Vulnerability Database
Base Score 4
Vector AV:N/AC:L/Au:S/C:N/I:N/A:P
Access Vector Network
Access Complexity Low
Authentication Single
Confidentiality Impact None
Integrity Impact None
Availability Impact Partial
CVSS v3 Scores
  National Vulnerability Database SUSE
Base Score 4.3 6.5
Vector AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:L AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H
Access Vector Network Network
Access Complexity Low Low
Privileges Required Low Low
User Interaction None None
Scope Unchanged Unchanged
Confidentiality Impact None None
Integrity Impact None None
Availability Impact Low High
SUSE Bugzilla entry: 1104467 [REOPENED]

SUSE Security Advisories:

List of released packages

Product(s) Fixed package version(s) References
SUSE Linux Enterprise Server 12 SP3
  • openvswitch >= 2.7.6-3.23.1
Patchnames:
SUSE-SLE-SERVER-12-SP3-2018-2942
SUSE Linux Enterprise Server for SAP Applications 12 SP3
  • openvswitch >= 2.7.6-3.23.1
Patchnames:
SUSE-SLE-SERVER-12-SP3-2018-2942
openSUSE Leap 42.3
  • openvswitch >= 2.7.6-19.1
  • openvswitch-debuginfo >= 2.7.6-19.1
  • openvswitch-debugsource >= 2.7.6-19.1
  • openvswitch-devel >= 2.7.6-19.1
  • openvswitch-ovn-central >= 2.7.6-19.1
  • openvswitch-ovn-central-debuginfo >= 2.7.6-19.1
  • openvswitch-ovn-common >= 2.7.6-19.1
  • openvswitch-ovn-common-debuginfo >= 2.7.6-19.1
  • openvswitch-ovn-docker >= 2.7.6-19.1
  • openvswitch-ovn-host >= 2.7.6-19.1
  • openvswitch-ovn-host-debuginfo >= 2.7.6-19.1
  • openvswitch-ovn-vtep >= 2.7.6-19.1
  • openvswitch-ovn-vtep-debuginfo >= 2.7.6-19.1
  • openvswitch-pki >= 2.7.6-19.1
  • openvswitch-test >= 2.7.6-19.1
  • openvswitch-test-debuginfo >= 2.7.6-19.1
  • openvswitch-vtep >= 2.7.6-19.1
  • openvswitch-vtep-debuginfo >= 2.7.6-19.1
  • python-openvswitch >= 2.7.6-19.1
  • python-openvswitch-test >= 2.7.6-19.1
Patchnames:
openSUSE-2018-1562


Status of this issue by product and package

Please note that this evaluation state might be work in progress, incomplete or outdated. Also information for service packs in the LTSS phase is only included for issues meeting the LTSS criteria. If in doubt, feel free to contact us for clarification.

Product(s) Source package State
SUSE Linux Enterprise Module for Server Applications 15 GA openvswitch Not affected
SUSE Linux Enterprise Server 12 SP3 openvswitch Released