National Vulnerability Database

National Vulnerability Database

National Vulnerability
Database

CVE-2019-15753 Detail

Current Description

In OpenStack os-vif 1.15.x before 1.15.2, and 1.16.0, a hard-coded MAC aging time of 0 disables MAC learning in linuxbridge, forcing obligatory Ethernet flooding of non-local destinations, which both impedes network performance and allows users to possibly view the content of packets for instances belonging to other tenants sharing the same network. Only deployments using the linuxbridge backend are affected. This occurs in PyRoute2.add() in internal/command/ip/linux/impl_pyroute2.py.

Source:  MITRE
View Analysis Description

Impact

CVSS v3.0 Severity and Metrics:

Base Score: 9.1 CRITICAL
Vector: AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:H (V3.0 legend)
Impact Score: 5.2
Exploitability Score: 3.9


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

CVSS v2.0 Severity and Metrics:

Base Score: 6.4 MEDIUM
Vector: (AV:N/AC:L/Au:N/C:P/I:N/A:P) (V2 legend)
Impact Subscore: 4.9
Exploitability Subscore: 10.0


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

References to Advisories, Solutions, and Tools

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Hyperlink Resource
http://www.openwall.com/lists/oss-security/2019/08/29/2 Mailing List Patch Third Party Advisory
https://launchpad.net/bugs/1837252 Issue Tracking Third Party Advisory
https://review.opendev.org/672834 Patch
https://review.opendev.org/678098 Patch
https://security.openstack.org/ossa/OSSA-2019-004.html Patch Vendor Advisory

Technical Details

Vulnerability Type (View All)

  • Resource Management Errors (CWE-399)

Known Affected Software Configurations Switch to CPE 2.2

Configuration 1 ( hide )
 cpe:2.3:a:openstack:os-vif:*:*:*:*:*:*:*:*
     Show Matching CPE(s)
From (including)
1.15.0
Up to (excluding)
1.15.2
 cpe:2.3:a:openstack:os-vif:1.16.0:*:*:*:*:*:*:*
     Show Matching CPE(s)


Change History

3 change records found - show changes

Quick Info

CVE Dictionary Entry:
CVE-2019-15753
NVD Published Date:
08/28/2019
NVD Last Modified:
09/04/2019