CVE-2016-5008
CRITICAL severity · CVSS 9.8 · Improper access control
9.8CVSS CRITICAL
Summary
libvirt before 2.0.0 improperly disables password checking when the password on a VNC server is set to an empty string, which allows remote attackers to bypass authentication and establish a VNC session by connecting to the server.
Impact & exploitability
Attack vectorNetwork
Attack complexityLow
Privileges requiredNone
User interactionNone
Confidentiality impactHigh
Integrity impactHigh
Availability impactHigh
Exploit probability (EPSS)4%
CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
Affected products we track (1)
Recommendation
Apply the vendor fix promptly. Open any affected product above for its exact safe version.
Additional information
- NVD record
- http://security.libvirt.org/2016/0001.htmlAdvisory
- http://lists.opensuse.org/opensuse-updates/2016-07/msg00054.html
- http://lists.opensuse.org/opensuse-updates/2016-07/msg00055.html
- http://lists.opensuse.org/opensuse-updates/2016-08/msg00024.html
- http://rhn.redhat.com/errata/RHSA-2016-2577.html
- http://www.debian.org/security/2016/dsa-3613
- http://www.securityfocus.com/bid/91562
- https://bugzilla.redhat.com/show_bug.cgi?id=1180092