Security readout for executives and security teams
This flaw could temporarily remove expected network isolation in Red Hat OpenStack Neutron after a minor overcloud update. If security groups were disabled, tenant virtual machines and network resources that should have been protected could become reachable. The risk is operationally time-bound but meaningful because it affects confidentiality between or into cloud workloads. Exposure is most likely in Red Hat OpenStack Platform environments running affected openstack-neutron streams and performing minor overcloud updates. Public, multi-tenant, or externally reachable tenant workloads raise business risk. Environments not using Red Hat OpenStack Neutron, or already on fixed errata packages, are not indicated as affected by the provided sources. Treat this as a moderate priority for OpenStack operators, especially multi-tenant or internet-adjacent clouds. It is not reported as actively exploited in the provided sources, but it can defeat a core isolation control during maintenance. Prioritize before or alongside planned overcloud updates. Mitigation focus: Apply the relevant Red Hat OpenStack Neutron errata for your platform stream.; Upgrade to fixed openstack-neutron package levels named in the CVE record.; After minor overcloud updates, verify bridge netfilter sysctls remain enabled..
Generated from the cited source records. This long-tail analysis has not been individually reviewed by a named human.
Conservative CVE-to-ATT&CK context
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ATT&CK lookup starting points
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CWE-362: Exact CWE lookup
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Open ATT&CK lookupCVE-2017-7543 mapping review
Open the CVE-to-ATT&CK bridge for reviewed, inferred, or future official mappings tied to this CVE.
Open ATT&CK lookup- Severity
- Medium
- CVSS
- 5.3 (3.0)
- Known Exploited
- No
- Published
Vector: CVSS:3.0/AV:N/AC:H/PR:N/UI:R/S:U/C:H/I:N/A:N
CNA and ADP enrichment extracted from CVE v5
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CVSS vector scores
1 official scoreWe collect every scored CVSS vector available in the official CNA and ADP containers. When more than one version is present, the table keeps the source vectors side by side instead of collapsing them into the highest score.
CVSS:3.0/AV:N/AC:H/PR:N/UI:R/S:U/C:H/I:N/A:N1.63.6Primary CVE scoreVulnerability scoring details
Base CVSS 3.0 score
5.3MediumVector: CVSS:3.0/AV:N/AC:H/PR:N/UI:R/S:U/C:H/I:N/A:N
Source materials
- CVE List V5 sourceCVE List V5
- https://bugzilla.redhat.com/show_bug.cgi?id=CVE-2017-7543CVE reference · x_refsource_CONFIRM
- RHSA-2017:2447CVE reference · vendor-advisory, x_refsource_REDHAT
- RHSA-2017:2451CVE reference · vendor-advisory, x_refsource_REDHAT
- RHSA-2017:2450CVE reference · vendor-advisory, x_refsource_REDHAT
- RHSA-2017:2448CVE reference · vendor-advisory, x_refsource_REDHAT
- RHSA-2017:2452CVE reference · vendor-advisory, x_refsource_REDHAT
- RHSA-2017:2449CVE reference · vendor-advisory, x_refsource_REDHAT
Products and packages named in the record
CWE details
CWE links open Glexia weakness intelligence pages with official CWE context, developer remediation guidance, and related CVE mappings.
Concurrent Execution using Shared Resource with Improper Synchronization ('Race Condition')
Concurrent Execution using Shared Resource with Improper Synchronization ('Race Condition') represents a recurring weakness pattern that can create exploitable paths when design, validation, or implementation controls are missing.