National Vulnerability Database

National Vulnerability Database

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    Vulnerabilities Detail

CVE-2017-7543 Detail

Current 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.

Source:  MITRE
Description Last Modified:  07/26/2018
View Analysis Description

Impact

CVSS v3.0 Severity and Metrics:

Base Score: 5.9 MEDIUM
Vector: AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:N/A:N (V3 legend)
Impact Score: 3.6
Exploitability Score: 2.2

Attack Vector (AV): Network
Attack Complexity (AC): High
Privileges Required (PR): None
User Interaction (UI): None
Scope (S): Unchanged
Confidentiality (C): High
Integrity (I): None
Availability (A): None

CVSS v2.0 Severity and Metrics:

Base Score: 4.3 MEDIUM
Vector: (AV:N/AC:M/Au:N/C:P/I:N/A:N) (V2 legend)
Impact Subscore: 2.9
Exploitability Subscore: 8.6

Access Vector (AV): Network
Access Complexity (AC): Medium
Authentication (AU): None
Confidentiality (C): Partial
Integrity (I): None
Availability (A): None
Additional Information:
Allows unauthorized disclosure of information

References to Advisories, Solutions, and Tools

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Hyperlink Resource
http://www.securityfocus.com/bid/100237 Third Party Advisory VDB Entry
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 Third Party Advisory
https://access.redhat.com/errata/RHSA-2017:2452 Third Party Advisory
https://bugzilla.redhat.com/show_bug.cgi?id=CVE-2017-7543 Issue Tracking Mitigation Third Party Advisory

Technical Details

Vulnerability Type (View All)

Change History

3 change records found - show changes

Quick Info

CVE Dictionary Entry:
CVE-2017-7543
NVD Published Date:
07/26/2018
NVD Last Modified:
10/26/2018