Get a Demo

Let's Patch It!

Book a short call with one our specialists, we'll walk you through how Endor Patches work, and ask you a few questions about your environment (like your primary programming languages and repository management). We'll also send you an email right after you fill out the form, feel free to reply with any questions you have in advance!

CVE

CVE-2019-15753

OpenStack os-vif Ageing time of 0 disables linuxbridge MAC learning
Back to all
CVE

CVE-2019-15753

OpenStack os-vif Ageing time of 0 disables linuxbridge MAC learning

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.

Package Versions Affected

Package Version
patch Availability
No items found.

Automatically patch vulnerabilities without upgrading

Fix Without Upgrading
Detect compatible fix
Apply safe remediation
Fix with a single pull request

CVSS Version

Severity
Base Score
CVSS Version
Score Vector
C
H
U
9.1
-
3.0
CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:H
C
H
U
9.1
-
3.0
CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:H
C
H
U
9.1
-
3.1
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:H

Related Resources

No items found.

References

https://nvd.nist.gov/vuln/detail/CVE-2019-15753, https://github.com/openstack/os-vif/commit/655c83d706f5de8a8cf23430782e065219297aef, https://github.com/openstack/os-vif/commit/ec9d5430300c908ea9a1c64151eee7af522a44e7, https://github.com/openstack/os-vif, https://launchpad.net/bugs/1837252, https://review.opendev.org/672834, https://review.opendev.org/678098, https://security.openstack.org/ossa/OSSA-2019-004.html, http://www.openwall.com/lists/oss-security/2019/08/29/2, https://pypi.org/project/os-vif, https://github.com/advisories/GHSA-mcpw-cp35-p3h8

Severity

9.1

CVSS Score
0
10

Basic Information

Base CVSS
9.1
EPSS Probability
0.02591%
EPSS Percentile
0.83557%
Introduced Version
1.16.0,1.15.0
Fix Available
1.17.0,1.15.2

Fix Critical Vulnerabilities Instantly

Secure your app without upgrading.
Fix Without Upgrading