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CVE-2016-5008

Publication date 13 July 2016

Last updated 24 July 2024


Ubuntu priority

Cvss 3 Severity Score

9.8 · Critical

Score breakdown

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.

Read the notes from the security team

Status

Package Ubuntu Release Status
libvirt 21.04 hirsute
Fixed 2.1.0-1.ubuntu1
20.10 groovy
Fixed 2.1.0-1.ubuntu1
20.04 LTS focal
Fixed 2.1.0-1.ubuntu1
19.10 eoan
Fixed 2.1.0-1.ubuntu1
19.04 disco
Fixed 2.1.0-1.ubuntu1
18.10 cosmic
Fixed 2.1.0-1.ubuntu1
18.04 LTS bionic
Fixed 2.1.0-1.ubuntu1
17.10 artful
Fixed 2.1.0-1ubuntu1
17.04 zesty Ignored end of life
16.10 yakkety Ignored end of life
16.04 LTS xenial
Fixed 1.3.1-1ubuntu10.19
15.10 wily Ignored end of life
14.04 LTS trusty
Fixed 1.2.2-0ubuntu13.1.26
12.04 LTS precise Ignored end of life

Notes


mdeslaur

vnc password authentication isn't strong and isn't recommended so setting priority to low to bundle with another update


leosilva

this CVE was original patched in unstable 2.0.0-1.

Patch details

For informational purposes only. We recommend not to cherry-pick updates. How can I get the fixes?

Package Patch details
libvirt

Severity score breakdown

Parameter Value
Base score 9.8 · Critical
Attack vector Network
Attack complexity Low
Privileges required None
User interaction None
Scope Unchanged
Confidentiality High
Integrity impact High
Availability impact High
Vector CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H

References

Related Ubuntu Security Notices (USN)

    • USN-3576-1
    • libvirt vulnerabilities
    • 20 February 2018

Other references