CVE-2017-7543

2018-07-2614:00:00

CWE-362

redhat

www.cve.org

CVSS3

5.3

Attack Vector

NETWORK

Attack Complexity

HIGH

Privileges Required

NONE

User Interaction

REQUIRED

Scope

UNCHANGED

Confidentiality Impact

HIGH

Integrity Impact

NONE

Availability Impact

NONE

CVSS:3.0/AV:N/AC:H/PR:N/UI:R/S:U/C:H/I:N/A:N

AI Score

5.5

Confidence

High

EPSS

0.003

Percentile

70.3%

JSON

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.

CNA Affected

[
  {
    "product": "openstack-neutron",
    "vendor": "Red Hat",
    "versions": [
      {
        "status": "affected",
        "version": "openstack-neutron-10.0.2-1.1"
      },
      {
        "status": "affected",
        "version": "openstack-neutron-8.3.0-11.1"
      },
      {
        "status": "affected",
        "version": "openstack-neutron-9.3.1-2.1"
      },
      {
        "status": "affected",
        "version": "openstack-neutron-7.2.0-12.1"
      }
    ]
  }
]