Ubuntu 12.04 LTS / 14.04 LTS / 15.04 / 15.10 : libvirt vulnerabilities (USN-2867-1)

Medium Nessus Plugin ID 87888

Synopsis

The remote Ubuntu host is missing one or more security-related patches.

Description

It was discovered that libvirt incorrectly handled the firewall rules on bridge networks when the daemon was restarted. This could result in an unintended firewall configuration. This issue only applied to Ubuntu 12.04 LTS. (CVE-2011-4600)

Peter Krempa discovered that libvirt incorrectly handled locking when certain ACL checks failed. A local attacker could use this issue to cause libvirt to stop responding, resulting in a denial of service.
This issue only applied to Ubuntu 14.04 LTS. (CVE-2014-8136)

Luyao Huang discovered that libvirt incorrectly handled VNC passwords in shapshot and image files. A remote authenticated user could use this issue to possibly obtain VNC passwords. This issue only affected Ubuntu 14.04 LTS. (CVE-2015-0236)

Han Han discovered that libvirt incorrectly handled volume creation failure when used with NFS. A remote authenticated user could use this issue to cause libvirt to crash, resulting in a denial of service.
This issue only applied to Ubuntu 15.10. (CVE-2015-5247)

Ossi Herrala and Joonas Kuorilehto discovered that libvirt incorrectly performed storage pool name validation. A remote authenticated user could use this issue to bypass ACLs and gain access to unintended files. This issue only applied to Ubuntu 14.04 LTS, Ubuntu 15.04 and Ubuntu 15.10. (CVE-2015-5313).

Note that Tenable Network Security has extracted the preceding description block directly from the Ubuntu security advisory. Tenable has attempted to automatically clean and format it as much as possible without introducing additional issues.

Solution

Update the affected libvirt-bin and / or libvirt0 packages.

See Also

https://usn.ubuntu.com/2867-1/

Plugin Details

Severity: Medium

ID: 87888

File Name: ubuntu_USN-2867-1.nasl

Version: 1.11

Type: local

Agent: unix

Published: 2016/01/13

Updated: 2020/09/22

Dependencies: 12634

Risk Information

Risk Factor: Medium

CVSS v2.0

Base Score: 4.3

Temporal Score: 3.2

Vector: CVSS2#AV:N/AC:M/Au:N/C:N/I:P/A:N

Temporal Vector: CVSS2#E:U/RL:OF/RC:C

CVSS v3.0

Base Score: 6.5

Temporal Score: 5.7

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

Temporal Vector: CVSS:3.0/E:U/RL:O/RC:C

Vulnerability Information

CPE: p-cpe:/a:canonical:ubuntu_linux:libvirt-bin, p-cpe:/a:canonical:ubuntu_linux:libvirt0, cpe:/o:canonical:ubuntu_linux:12.04:-:lts, cpe:/o:canonical:ubuntu_linux:14.04, cpe:/o:canonical:ubuntu_linux:15.04, cpe:/o:canonical:ubuntu_linux:15.10

Required KB Items: Host/cpu, Host/Ubuntu, Host/Ubuntu/release, Host/Debian/dpkg-l

Exploit Available: false

Exploit Ease: No known exploits are available

Patch Publication Date: 2016/01/12

Vulnerability Publication Date: 2014/12/19

Reference Information

CVE: CVE-2011-4600, CVE-2014-8136, CVE-2015-0236, CVE-2015-5247, CVE-2015-5313

USN: 2867-1