CVE-2017-7543

  1. OpenCVE
  2. Vulnerabilities (CVE)
  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 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.

5.9 /10

CVSS v3 : MEDIUM

V3 Legend

Vector : AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:N/A:N

Exploitability : 2.2 / Impact : 3.6

Attack Vector NETWORK

Attack Complexity HIGH

Privileges Required NONE

User Interaction NONE

Confidentiality Impact HIGH

Integrity Impact NONE

Availability Impact NONE

Scope UNCHANGED

4.3 /10

CVSS v2.0 : MEDIUM

V2 Legend

Vector : AV:N/AC:M/Au:N/C:P/I:N/A:N

Exploitability : 8.6 / Impact : 2.9

Access Vector NETWORK

Access Complexity MEDIUM

Authentication NONE

Confidentiality Impact PARTIAL

Integrity Impact NONE

Availability Impact NONE

References
Link Resource
http://www.securityfocus.com/bid/100237 Third Party Advisory VDB Entry
https://access.redhat.com/errata/RHSA-2017:2447 Third Party Advisory
https://access.redhat.com/errata/RHSA-2017:2448 Third Party Advisory
https://access.redhat.com/errata/RHSA-2017:2449 Third Party Advisory
https://access.redhat.com/errata/RHSA-2017:2450 Third Party Advisory
https://access.redhat.com/errata/RHSA-2017:2451 Third Party Advisory
https://access.redhat.com/errata/RHSA-2017:2452 Third Party Advisory
https://bugzilla.redhat.com/show_bug.cgi?id=CVE-2017-7543 Mitigation Issue Tracking Third Party Advisory
Configurations

Configuration 1 (hide)

OR cpe:2.3:a:openstack:neutron:*:*:*:*:*:*:*:*
cpe:2.3:a:openstack:neutron:*:*:*:*:*:*:*:*
cpe:2.3:a:openstack:neutron:*:*:*:*:*:*:*:*
cpe:2.3:a:openstack:neutron:*:*:*:*:*:*:*:*

Configuration 2 (hide)

AND
cpe:2.3:a:redhat:openstack:6.0:*:*:*:*:*:*:*
cpe:2.3:o:redhat:enterprise_linux:7.0:*:*:*:*:*:*:*

Configuration 3 (hide)

AND
cpe:2.3:a:redhat:openstack:7.0:*:*:*:*:*:*:*
cpe:2.3:o:redhat:enterprise_linux:7.0:*:*:*:*:*:*:*

Configuration 4 (hide)

OR cpe:2.3:a:redhat:openstack:8:*:*:*:*:*:*:*
cpe:2.3:a:redhat:openstack:9:*:*:*:*:*:*:*
cpe:2.3:a:redhat:openstack:10:*:*:*:*:*:*:*
cpe:2.3:a:redhat:openstack:11:*:*:*:*:*:*:*
History

12 Feb 2023, 23:30

Type Values Removed Values Added
References
  • {'url': 'https://access.redhat.com/security/cve/CVE-2017-7543', 'name': 'https://access.redhat.com/security/cve/CVE-2017-7543', 'tags': [], 'refsource': 'MISC'}
  • {'url': 'https://bugzilla.redhat.com/show_bug.cgi?id=1473792', 'name': 'https://bugzilla.redhat.com/show_bug.cgi?id=1473792', 'tags': [], 'refsource': 'MISC'}
Summary A race-condition flaw was discovered in openstack-neutron 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. 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.

02 Feb 2023, 21:17

Type Values Removed Values Added
References
  • (MISC) https://access.redhat.com/security/cve/CVE-2017-7543 -
  • (MISC) https://bugzilla.redhat.com/show_bug.cgi?id=1473792 -
Summary 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. A race-condition flaw was discovered in openstack-neutron 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.

04 Aug 2021, 17:15

Type Values Removed Values Added
References (CONFIRM) https://bugzilla.redhat.com/show_bug.cgi?id=CVE-2017-7543 - Issue Tracking, Mitigation, Third Party Advisory (CONFIRM) https://bugzilla.redhat.com/show_bug.cgi?id=CVE-2017-7543 - Mitigation, Issue Tracking, Third Party Advisory
CPE cpe:2.3:a:redhat:openstack:8.0:*:*:*:*:*:*:*
cpe:2.3:a:redhat:openstack:9.0:*:*:*:*:*:*:*
cpe:2.3:a:redhat:openstack:10.0:*:*:*:*:*:*:*
cpe:2.3:a:redhat:openstack:11.0:*:*:*:*:*:*:*		 cpe:2.3:a:redhat:openstack:11:*:*:*:*:*:*:*
cpe:2.3:a:redhat:openstack:9:*:*:*:*:*:*:*
cpe:2.3:a:redhat:openstack:10:*:*:*:*:*:*:*
cpe:2.3:a:redhat:openstack:8:*:*:*:*:*:*:*
Information

Published : 2018-07-26 14:29

Updated : 2023-12-10 12:44

NVD link : CVE-2017-7543

Mitre link : CVE-2017-7543

CVE.ORG link : CVE-2017-7543

JSON object : View

Products Affected

redhat

  • enterprise_linux
  • openstack

openstack

  • neutron
CWE
CWE-362

Concurrent Execution using Shared Resource with Improper Synchronization ('Race Condition')