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.
Published: 2018-09-19
Score: 4.3 Medium
EPSS: 1.1% Low
KEV: No
Impact: n/a
Action: n/a
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Advisories
Source ID Title
Debian DLA Debian DLA DLA-2571-1 openvswitch security update
EUVD EUVD EUVD-2018-8966 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.
Ubuntu USN Ubuntu USN USN-3873-1 Open vSwitch vulnerabilities
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Canonical Ubuntu Linux
Debian Debian Linux
Openvswitch Openvswitch
Redhat Enterprise Linux Openstack
cve-icon MITRE

Status: PUBLISHED

Assigner: mitre

Published:

Updated: 2024-08-05T10:47:03.764Z

Reserved: 2018-09-19T00:00:00.000Z

Link: CVE-2018-17204

cve-icon Vulnrichment

No data.

cve-icon NVD

Status : Modified

Published: 2018-09-19T16:29:00.897

Modified: 2024-11-21T03:54:05.327

Link: CVE-2018-17204

cve-icon Redhat

Severity : Moderate

Publid Date: 2018-09-25T00:00:00Z

Links: CVE-2018-17204 - Bugzilla

cve-icon OpenCVE Enrichment

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Weaknesses