Description
The networkReloadIptablesRules function in network/bridge_driver.c in libvirt before 0.9.9 does not properly handle firewall rules on bridge networks when libvirtd is restarted, which might allow remote attackers to bypass intended access restrictions via a (1) DNS or (2) DHCP query.
References (4)
Core 4
Core References
Vendor Advisory vendor-advisory
x_refsource_ubuntu
http://www.ubuntu.com/usn/USN-2867-1
Vendor Advisory x_refsource_confirm
http://libvirt.org/news-2012.html
Various Sources x_refsource_confirm
http://libvirt.org/git/?p=libvirt.git%3Ba=commitdiff%3Bh=ae1232b298323dd7bef909426e2ebafa6bca9157
Issue Tracking x_refsource_confirm
https://bugzilla.redhat.com/show_bug.cgi?id=760442
Scores
CVSS v3
5.9
EPSS
0.0178
EPSS Percentile
75.6%
Attack Vector
NETWORK
CVSS:3.0/AV:N/AC:H/PR:N/UI:N/S:U/C:N/I:H/A:N
Details
CWE
CWE-284
Status
published
Products (5)
canonical/ubuntu_linux
12.04
canonical/ubuntu_linux
14.04
canonical/ubuntu_linux
15.04
canonical/ubuntu_linux
15.10
redhat/libvirt
0.9.8
Published
Apr 14, 2016
Tracked Since
Feb 18, 2026