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Fencer Intel
critical 9.8

CVE-2017-9264 json

In lib/conntrack.c in the firewall implementation in Open vSwitch (OvS) 2.6.1, there is a buffer over-read while parsing malformed TCP, UDP…

published 2017-05-29 9 y ago modified 2026-06-17 4 mo ago also EUVD-2017-18200

cvss
9.8
version 3.0, NVD
cisa kev
Not listed
not in CISA's catalog
epss
2.4%
EPSS 2.4% chance of exploitation in 30 days, percentile 84%
public exploits
0
none known

Summary

In lib/conntrack.c in the firewall implementation in Open vSwitch (OvS) 2.6.1, there is a buffer over-read while parsing malformed TCP, UDP, and IPv6 packets in the functions `extract_l3_ipv6`, `extract_l4_tcp`, and `extract_l4_udp` that can be triggered remotely.

Patch / fix

  • openvswitch Debian 14, Debian 13, Debian 12 2.8.1+dfsg1-2

debian advisories DEBIAN-CVE-2017-9264

  • openvswitch openstack 11, openstack 10 2.6.1-13.git20161206.el7ost
  • python-openvswitch openstack 11, openstack 10 2.6.1-13.git20161206.el7ost
  • openvswitch-ovn-host openstack 11 2.6.1-13.git20161206.el7ost
  • openvswitch-ovn-vtep openstack 11 2.6.1-13.git20161206.el7ost
  • openvswitch-ovn-common openstack 11 2.6.1-13.git20161206.el7ost
  • openvswitch-ovn-docker openstack 11 2.6.1-13.git20161206.el7ost
  • openvswitch-ovn-central openstack 11 2.6.1-13.git20161206.el7ost
  • openvswitch RHEL 7 2.7.2-1.git20170719.el7fdp

red hat advisories RHSA-2017:2648RHSA-2017:2727RHSA-2017:2418

Vendor advisories

What the vendors themselves say about their products: affected, fixed or not affected, and what to do.

red hat product security vex CVE-2017-9264 updated cvss 5.6

openvswitch: Buffer over-read while parsing malformed TCP, UDP and IPv6 packets

  • Red Hat Fast Datapath for Red Hat Enterprise Linux 7 openvswitch 2.7.2-1.git20170719.el7fdp, openvswitch-test 2.7.2-1.git20170719.el7fdp, python-openvswitch 2.7.2-1.git20170719.el7fdp, openvswitch-ovn-host 2.7.2-1.git20170719.el7fdp, openvswitch-ovn-vtep 2.7.2-1.git20170719.el7fdp, openvswitch-ovn-common 2.7.2-1.git20170719.el7fdp, +2 more
    fixed: vendor fix RHSA-2017:2418
  • Red Hat OpenStack Platform 10.0 openvswitch 2.6.1-13.git20161206.el7ost, python-openvswitch 2.6.1-13.git20161206.el7ost
    fixed: vendor fix RHSA-2017:2648
  • Red Hat OpenStack Platform 11.0 openvswitch 2.6.1-13.git20161206.el7ost, python-openvswitch 2.6.1-13.git20161206.el7ost, openvswitch-ovn-host 2.6.1-13.git20161206.el7ost, openvswitch-ovn-vtep 2.6.1-13.git20161206.el7ost, openvswitch-ovn-common 2.6.1-13.git20161206.el7ost, openvswitch-ovn-docker 2.6.1-13.git20161206.el7ost, +1 more
    fixed: vendor fix RHSA-2017:2727
  • Red Hat Virtualization 4.2 Management Agent for RHEL 7.6 EUS Hosts openvswitch 2.7.2-1.git20170719.el7fdp, python-openvswitch 2.7.2-1.git20170719.el7fdp, openvswitch-ovn-host 2.7.2-1.git20170719.el7fdp, openvswitch-ovn-common 2.7.2-1.git20170719.el7fdp
    fixed: vendor fix RHSA-2017:2418
  • Red Hat Enterprise Linux OpenStack Platform 5 (Icehouse) openvswitch Red Hat Enterprise Linux OpenStack Platform 6 (Juno) openvswitch Red Hat Enterprise Linux OpenStack Platform 7 (Kilo) openvswitch, openvswitch-test, python-openvswitch Red Hat OpenShift Enterprise 3 openvswitch, openvswitch-test, python-openvswitch Red Hat OpenStack Platform 8 (Liberty) openvswitch, python-openvswitch Red Hat OpenStack Platform 9 (Mitaka) openvswitch, python-openvswitch
    +1 more products
    Red Hat OpenStack Platform 12 (Pike) openvswitch, openvswitch-test, python-openvswitch, openvswitch-ovn-host, openvswitch-ovn-vtep, openvswitch-ovn-common, +1 more
    not affected: vulnerable code not present

Red Hat CSAF VEX © Red Hat, Inc., from https://security.access.redhat.com/data/csaf/v2/vex/; changed: reduced to product statuses and remediations. CC BY 4.0 · csaf

Exploit prediction

2.42% chance of exploitation in the next 30 days, higher than 84% of all scored CVEs (FIRST EPSS, 2026-11-09).

CVSS scores

assigned by version score vector
NVD 3.0 9.8 CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
NVD 2.0 7.5 AV:N/AC:L/Au:N/C:P/I:P/A:P

Classification

Weakness

References

Sources

Fencer Intel keeps one entry per vulnerability: the CVE id wins, then GHSA, and records that alias each other are merged, except that two CVEs always keep separate entries. The same data is available as JSON.