Vulnerability Details 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.
Exploit prediction scoring system (EPSS) score
EPSS Score 0.002
EPSS Ranking 44.2%
CVSS Severity
CVSS v3 Score 5.3
CVSS v2 Score 4.3
References
- http://www.securityfocus.com/bid/100237
- https://access.redhat.com/errata/RHSA-2017:2447
- https://access.redhat.com/errata/RHSA-2017:2448
- https://access.redhat.com/errata/RHSA-2017:2449
- https://access.redhat.com/errata/RHSA-2017:2450
- https://access.redhat.com/errata/RHSA-2017:2451
- https://access.redhat.com/errata/RHSA-2017:2452
- https://bugzilla.redhat.com/show_bug.cgi?id=CVE-2017-7543
- http://www.securityfocus.com/bid/100237
- https://access.redhat.com/errata/RHSA-2017:2447
- https://access.redhat.com/errata/RHSA-2017:2448
- https://access.redhat.com/errata/RHSA-2017:2449
- https://access.redhat.com/errata/RHSA-2017:2450
- https://access.redhat.com/errata/RHSA-2017:2451
- https://access.redhat.com/errata/RHSA-2017:2452
- https://bugzilla.redhat.com/show_bug.cgi?id=CVE-2017-7543
Products affected by CVE-2017-7543
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cpe:2.3:a:openstack:neutron:10.0.0
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cpe:2.3:a:openstack:neutron:10.0.1
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cpe:2.3:a:openstack:neutron:10.0.2
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cpe:2.3:a:openstack:neutron:7.0.0
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cpe:2.3:a:openstack:neutron:7.0.1
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cpe:2.3:a:openstack:neutron:7.0.2
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cpe:2.3:a:openstack:neutron:7.0.3
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cpe:2.3:a:openstack:neutron:7.0.4
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cpe:2.3:a:openstack:neutron:7.1.0
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cpe:2.3:a:openstack:neutron:7.1.1
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cpe:2.3:a:openstack:neutron:7.1.2
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cpe:2.3:a:openstack:neutron:7.2.0
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cpe:2.3:a:openstack:neutron:8.0.0
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cpe:2.3:a:openstack:neutron:8.1.0
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cpe:2.3:a:openstack:neutron:8.1.1
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cpe:2.3:a:openstack:neutron:8.1.2
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cpe:2.3:a:openstack:neutron:8.2.0
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cpe:2.3:a:openstack:neutron:8.3.0
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cpe:2.3:a:openstack:neutron:9.0.0
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cpe:2.3:a:openstack:neutron:9.1.0
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cpe:2.3:a:openstack:neutron:9.1.1
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cpe:2.3:a:openstack:neutron:9.2.0
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cpe:2.3:a:openstack:neutron:9.3.0
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cpe:2.3:a:openstack:neutron:9.3.1
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cpe:2.3:a:redhat:openstack:10
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cpe:2.3:a:redhat:openstack:11
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cpe:2.3:a:redhat:openstack:6.0
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cpe:2.3:a:redhat:openstack:7.0
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cpe:2.3:a:redhat:openstack:8
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cpe:2.3:a:redhat:openstack:9
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cpe:2.3:o:redhat:enterprise_linux:7.0