What’s Vulnerable › Vulnerabilities

CVE-2011-4600

• Severity: medium (CVSS 5.9 v3.0)
• Exploited in the wild: not listed in CISA KEV
• EPSS: 1.8% probability of exploitation in the next 30 days
• Public exploit or detection template: none known
• Published: 2016-04-14 · updated 2026-06-16
• Weakness: CWE-284

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.

Affected products

• Canonical Ubuntu Linux: 12.04, 14.04, 15.04, 15.10
• libvirt: 0.9.8

References

• http://libvirt.org/git/?p=libvirt.git%3Ba=commitdiff%3Bh=ae1232b298323dd7bef909426e2ebafa6bca9157
• http://libvirt.org/news-2012.html
• http://www.ubuntu.com/usn/USN-2867-1
• https://bugzilla.redhat.com/show_bug.cgi?id=760442
• http://libvirt.org/git/?p=libvirt.git%3Ba=commitdiff%3Bh=ae1232b298323dd7bef909426e2ebafa6bca9157
• http://libvirt.org/news-2012.html
• http://www.ubuntu.com/usn/USN-2867-1
• https://bugzilla.redhat.com/show_bug.cgi?id=760442

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