Medium severity · published Jul 26, 2018
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…
5.9
CVSS
1.8%
EPSS
No
On KEV
Description
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.
CVSS vector
CVSS:3.0/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:N/A:N
Attack vector
Network
Complexity
High
Privileges
None
User interaction
None
Confidentiality
High
Integrity
None
Availability
None
Scope
Unchanged
Exploitation
Is it being used?
Exploit prediction (EPSS)1.8% · higher than 79% of CVEs
Exploited in the wildNo evidence yet
CISA KEVNot listed
Ransomware campaign useNot known
Affected products
Which versions
NE
Neutron · Openstack
7.0.0 before 7.2.0-12.1; 8.0.0 before 8.3.0-11.1; 9.0.0 before 9.3.1-2.1; 10.0.0 before 10.0.2-1.1 · source: NVD
OP
Openstack · Redhat
6.0; 7.0; 8; 9; 10; 11 · source: NVD
References
NVD
https://nvd.nist.gov/vuln/detail/CVE-2017-7543
CVE.org
https://www.cve.org/CVERecord?id=CVE-2017-7543
Third Party Advisory
http://www.securityfocus.com/bid/100237
Third Party Advisory
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
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