CVE-2016-5008

CRITICAL

libvirt < 2.0.0 - Unauthenticated VNC Authentication Bypass via Empty Password

Title source: llm

Description

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.

References (11)

Core 11

Core References

Issue Tracking x_refsource_confirm

https://bugzilla.redhat.com/show_bug.cgi?id=1180092

Mailing List, Third Party Advisory vendor-advisory x_refsource_fedora

https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/DZZMOMRXNPALA34XDF5NK363KDLAYSTL/

Third Party Advisory vendor-advisory x_refsource_debian

http://www.debian.org/security/2016/dsa-3613

Third Party Advisory, VDB Entry vdb-entry x_refsource_bid

http://www.securityfocus.com/bid/91562

Vendor Advisory x_refsource_confirm

http://security.libvirt.org/2016/0001.html

Mailing List vendor-advisory x_refsource_suse

http://lists.opensuse.org/opensuse-updates/2016-07/msg00055.html

Mailing List, Third Party Advisory vendor-advisory x_refsource_fedora

https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/QTQF6LXKEEMJG4VOOCIAPJAD6ACBYP4W/

Mailing List vendor-advisory x_refsource_suse

http://lists.opensuse.org/opensuse-updates/2016-08/msg00024.html

Mailing List vendor-advisory x_refsource_suse

http://lists.opensuse.org/opensuse-updates/2016-07/msg00054.html

Vendor Advisory vendor-advisory x_refsource_redhat

http://rhn.redhat.com/errata/RHSA-2016-2577.html

Vendor Advisory vendor-advisory x_refsource_ubuntu

https://usn.ubuntu.com/3576-1/

Scores

CVSS v3 9.8

EPSS 0.0362

EPSS Percentile 88.1%

Attack Vector NETWORK

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

Details

CWE

CWE-284

Status published

Products (2)

debian/debian_linux 8.0

redhat/libvirt < 1.3.5

Published Jul 13, 2016

Tracked Since Feb 18, 2026