SARA / Free Tools / CVE / CVE-2017-7543

CVE-2017-7543 — A race-condition flaw was discovered in openstack-neutron before 7

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

CVSS
5.3 MEDIUM
EPSS
0.46% (top 36.40%)
CWE
CWE-362
Published
2018-07-26T14:00:00.000Z
Last modified
2024-08-05T16:04:11.998Z
CVSS vector
CVSS:3.0/AV:N/AC:H/PR:N/UI:R/S:U/C:H/I:N/A:N

01What is this vulnerability?

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…

02Affected products

VendorProductVersions
Red Hatopenstackneutron — openstack-neutron-10.0.2-1.1, openstack-neutron-8.3.0-11.1, openstack-neutron-9.3.1-2.1, openstack-neutron-7.2.0-12.1

03Active exploitation status

Not currently listed on the CISA Known Exploited Vulnerabilities (KEV) catalog. EPSS is the best forward-looking signal — see the EPSS row above.

04Recommended remediation

05Technical details

For the full vendor write-up, exploit chains, and reference implementations, see the references list in section 09.

06Detection signatures

Ask SARA in chat to draft a starting detection for this CVE in your stack of choice.

07Related CVEs

No directly-cited follow-up CVEs in the KB record for this advisory. The references list in section 09 carries the vendor cross-references.

08Timeline

09References

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