1. Home
  2. CVE Database
  3. CVE-2017-7543
MEDIUM · 5.3

CVE-2017-7543

A race-condition flaw was discovered in openstack-neutron before 7.2.0-12.1, 8.x before 8.3.0-11.1, 9.x before 9.3.1-2.1, and 10.x before 10.0.2-1.1, where, following a minor overcloud update, neutron...

Vulnerability Description

A race-condition flaw was discovered in openstack-neutron before 7.2.0-12.1, 8.x before 8.3.0-11.1, 9.x before 9.3.1-2.1, and 10.x before 10.0.2-1.1, where, following a minor overcloud update, neutron security groups were disabled. Specifically, the following were reset to 0: net.bridge.bridge-nf-call-ip6tables and net.bridge.bridge-nf-call-iptables. The race was only triggered by an update, at which point an attacker could access exposed tenant VMs and network resources.

CVSS Score

5.3

MEDIUM

CVSS:3.0/AV:N/AC:H/PR:N/UI:R/S:U/C:H/I:N/A:N
Attack Vector
NETWORK
Attack Complexity
HIGH
Privileges Required
NONE
User Interaction
REQUIRED
Scope
UNCHANGED
Confidentiality
HIGH
Integrity
NONE
Availability
NONE

Affected Products

VendorProductVersions
OpenstackNeutron>= 7.0.0, < 7.2.0-12.1
RedhatOpenstack6.0
RedhatEnterprise Linux7.0

Related Weaknesses (CWE)

CWE-362

References

FAQ

What is CVE-2017-7543?

CVE-2017-7543 is a vulnerability with a CVSS score of 5.3 (MEDIUM). A race-condition flaw was discovered in openstack-neutron before 7.2.0-12.1, 8.x before 8.3.0-11.1, 9.x before 9.3.1-2.1, and 10.x before 10.0.2-1.1, where, following a minor overcloud update, neutron...

How severe is CVE-2017-7543?

CVE-2017-7543 has been rated MEDIUM with a CVSS base score of 5.3/10. Review the CVSS metrics above for detailed severity breakdown.

Is there a patch for CVE-2017-7543?

Check the references section above for vendor advisories and patch information. Affected products include: Openstack Neutron, Redhat Openstack, Redhat Enterprise Linux.