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.
Published 2018-07-26 14:29:00
Updated 2023-02-12 23:30:51
Source Red Hat, Inc.
View at NVD,   CVE.org

Products affected by CVE-2017-7543

Exploit prediction scoring system (EPSS) score for CVE-2017-7543

EPSS FAQ
0.31%
Probability of exploitation activity in the next 30 days EPSS Score History
~ 70 %
Percentile, the proportion of vulnerabilities that are scored at or less

CVSS scores for CVE-2017-7543

Base Score Base Severity CVSS Vector Exploitability Score Impact Score Score Source First Seen
4.3
 MEDIUM AV:N/AC:M/Au:N/C:P/I:N/A:N
8.6
2.9
 NIST
5.9
 MEDIUM CVSS:3.0/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:N/A:N
2.2
3.6
 NIST
5.3
 MEDIUM CVSS:3.0/AV:N/AC:H/PR:N/UI:R/S:U/C:H/I:N/A:N
1.6
3.6
 Red Hat, Inc.

CWE ids for CVE-2017-7543

References for CVE-2017-7543

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