ID CVE-2018-17204
Summary 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.
References
Vulnerable Configurations
  • cpe:2.3:a:openvswitch:openvswitch:2.7.0:*:*:*:*:*:*:*
    cpe:2.3:a:openvswitch:openvswitch:2.7.0:*:*:*:*:*:*:*
  • cpe:2.3:a:openvswitch:openvswitch:2.7.1:*:*:*:*:*:*:*
    cpe:2.3:a:openvswitch:openvswitch:2.7.1:*:*:*:*:*:*:*
  • cpe:2.3:a:openvswitch:openvswitch:2.7.2:*:*:*:*:*:*:*
    cpe:2.3:a:openvswitch:openvswitch:2.7.2:*:*:*:*:*:*:*
  • cpe:2.3:a:openvswitch:openvswitch:2.7.3:*:*:*:*:*:*:*
    cpe:2.3:a:openvswitch:openvswitch:2.7.3:*:*:*:*:*:*:*
  • cpe:2.3:a:openvswitch:openvswitch:2.7.4:*:*:*:*:*:*:*
    cpe:2.3:a:openvswitch:openvswitch:2.7.4:*:*:*:*:*:*:*
  • cpe:2.3:a:openvswitch:openvswitch:2.7.5:*:*:*:*:*:*:*
    cpe:2.3:a:openvswitch:openvswitch:2.7.5:*:*:*:*:*:*:*
  • cpe:2.3:a:openvswitch:openvswitch:2.7.6:*:*:*:*:*:*:*
    cpe:2.3:a:openvswitch:openvswitch:2.7.6:*:*:*:*:*:*:*
  • cpe:2.3:a:redhat:openstack:10:*:*:*:*:*:*:*
    cpe:2.3:a:redhat:openstack:10:*:*:*:*:*:*:*
  • cpe:2.3:a:redhat:openstack:13:*:*:*:*:*:*:*
    cpe:2.3:a:redhat:openstack:13:*:*:*:*:*:*:*
  • cpe:2.3:o:canonical:ubuntu_linux:18.04:*:*:*:lts:*:*:*
    cpe:2.3:o:canonical:ubuntu_linux:18.04:*:*:*:lts:*:*:*
  • cpe:2.3:o:canonical:ubuntu_linux:16.04:*:*:*:lts:*:*:*
    cpe:2.3:o:canonical:ubuntu_linux:16.04:*:*:*:lts:*:*:*
  • cpe:2.3:o:debian:debian_linux:9.0:*:*:*:*:*:*:*
    cpe:2.3:o:debian:debian_linux:9.0:*:*:*:*:*:*:*
CVSS
Base: 4.0 (as of 04-08-2021 - 17:14)
Impact:
Exploitability:
CWE CWE-617
CAPEC
Access
VectorComplexityAuthentication
NETWORK LOW SINGLE
Impact
ConfidentialityIntegrityAvailability
NONE NONE PARTIAL
cvss-vector via4 AV:N/AC:L/Au:S/C:N/I:N/A:P
redhat via4
advisories
  • rhsa
    id RHSA-2018:3500
  • rhsa
    id RHSA-2019:0053
  • rhsa
    id RHSA-2019:0081
rpms
  • openvswitch-0:2.9.0-70.el7fdp.1
  • openvswitch-debuginfo-0:2.9.0-70.el7fdp.1
  • openvswitch-devel-0:2.9.0-70.el7fdp.1
  • openvswitch-ovn-central-0:2.9.0-70.el7fdp.1
  • openvswitch-ovn-common-0:2.9.0-70.el7fdp.1
  • openvswitch-ovn-host-0:2.9.0-70.el7fdp.1
  • openvswitch-ovn-vtep-0:2.9.0-70.el7fdp.1
  • openvswitch-test-0:2.9.0-70.el7fdp.1
  • python-openvswitch-0:2.9.0-70.el7fdp.1
  • openvswitch-0:2.9.0-83.el7fdp.1
  • openvswitch-debuginfo-0:2.9.0-83.el7fdp.1
  • openvswitch-devel-0:2.9.0-83.el7fdp.1
  • openvswitch-ovn-central-0:2.9.0-83.el7fdp.1
  • openvswitch-ovn-common-0:2.9.0-83.el7fdp.1
  • openvswitch-ovn-host-0:2.9.0-83.el7fdp.1
  • openvswitch-ovn-vtep-0:2.9.0-83.el7fdp.1
  • openvswitch-test-0:2.9.0-83.el7fdp.1
  • python-openvswitch-0:2.9.0-83.el7fdp.1
  • openvswitch-0:2.9.0-83.el7fdp.1
  • openvswitch-debuginfo-0:2.9.0-83.el7fdp.1
  • openvswitch-ovn-central-0:2.9.0-83.el7fdp.1
  • openvswitch-ovn-common-0:2.9.0-83.el7fdp.1
  • openvswitch-ovn-host-0:2.9.0-83.el7fdp.1
  • openvswitch-ovn-vtep-0:2.9.0-83.el7fdp.1
  • openvswitch-test-0:2.9.0-83.el7fdp.1
  • python-openvswitch-0:2.9.0-83.el7fdp.1
refmap via4
misc https://github.com/openvswitch/ovs/commit/4af6da3b275b764b1afe194df6499b33d2bf4cde
ubuntu USN-3873-1
Last major update 04-08-2021 - 17:14
Published 19-09-2018 - 16:29
Last modified 04-08-2021 - 17:14
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