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CVE-2011-4600

Published: 31 December 2011

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.

Priority

Low

Cvss 3 Severity Score

5.9

Score breakdown

Status

Package Release Status
libvirt
Launchpad, Ubuntu, Debian
upstream
Released (0.9.9-1)
precise
Released (0.9.8-2ubuntu17.23)
trusty Not vulnerable
(1.2.2-0ubuntu13.1.14)
vivid Not vulnerable

wily Not vulnerable

Patches:
upstream: http://libvirt.org/git/?p=libvirt.git;a=commitdiff;h=ae1232b298323dd7bef909426e2ebafa6bca9157

Severity score breakdown

Parameter Value
Base score 5.9
Attack vector Network
Attack complexity High
Privileges required None
User interaction None
Scope Unchanged
Confidentiality None
Integrity impact High
Availability impact None
Vector CVSS:3.0/AV:N/AC:H/PR:N/UI:N/S:U/C:N/I:H/A:N