CVE-2011-4600 Information

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.

CVSS Vector

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

Reference

http://libvirt.org/git/?p=libvirt.git;a=commitdiff;h=ae1232b298323dd7bef909426e2ebafa6bca9157 http://libvirt.org/news-2012.html http://www.ubuntu.com/usn/USN-2867-1 https://bugzilla.redhat.com/show_bug.cgi?id=760442

Attack Complexity

HIGH

Privileges Required

NONE

User Interaction Required

NONE

Scope

NONE

Confidentiality Impact

UNCHANGED

Integrity Impact

NONE

Availability Impact

HIGH

Base Score

NONE

Base Severity

5.9