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[email protected]NVD:CVE-2019-15753

HistoryAug 28, 2019 - 9:15 p.m.

CVE-2019-15753

2019-08-2821:15:10

CWE-770

[email protected]

web.nvd.nist.gov

CVSS2

6.4

Attack Vector

NETWORK

Attack Complexity

LOW

Authentication

NONE

Confidentiality Impact

PARTIAL

Integrity Impact

NONE

Availability Impact

PARTIAL

AV:N/AC:L/Au:N/C:P/I:N/A:P

CVSS3

9.1

Attack Vector

NETWORK

Attack Complexity

LOW

Privileges Required

NONE

User Interaction

NONE

Scope

UNCHANGED

Confidentiality Impact

HIGH

Integrity Impact

NONE

Availability Impact

HIGH

CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:H

AI Score

9.2

Confidence

High

EPSS

0.004

Percentile

75.0%

JSON

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.

Affected configurations

Nvd

Node

openstackos-vifRange1.15.0–1.15.2

openstackos-vifMatch1.16.0

VendorProductVersionCPE
openstackos-vif*cpe:2.3:a:openstack:os-vif:*:*:*:*:*:*:*:*
openstackos-vif1.16.0cpe:2.3:a:openstack:os-vif:1.16.0:*:*:*:*:*:*:*