Virtuozzo 7 : readykernel-patch (VZA-2017-065)

Critical Nessus Plugin ID 101822


The remote Virtuozzo host is missing a security update.


According to the version of the vzkernel package and the readykernel-patch installed, the Virtuozzo installation on the remote host is affected by the following vulnerabilities :

- The mq_notify function in the Linux kernel through 4.11.9 does not set the sock pointer to NULL upon entry into the retry logic. During a user-space close of a Netlink socket, it allows attackers to cause a denial of service (use-after-free) or possibly have unspecified other impact.

- If the sctp module was loaded on the host, a privileged user inside a container could make sctp listen on a socket in an inappropriate state, causing a kernel crash (use-after-free in sctp_wait_for_sndbuf()).

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


Update the readykernel patch.

See Also

Plugin Details

Severity: Critical

ID: 101822

File Name: Virtuozzo_VZA-2017-065.nasl

Version: $Revision: 3.3 $

Type: local

Published: 2017/07/20

Modified: 2018/01/30

Dependencies: 12634

Risk Information

Risk Factor: Critical


Base Score: 10

Temporal Score: 7.4

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

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


Base Score: 9.8

Temporal Score: 8.5

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

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

Vulnerability Information

CPE: p-cpe:/a:virtuozzo:virtuozzo:readykernel, cpe:/o:virtuozzo:virtuozzo:7

Required KB Items: Host/local_checks_enabled, Host/Virtuozzo/release, Host/Virtuozzo/rpm-list, Host/readykernel-info

Exploit Available: false

Exploit Ease: No known exploits are available

Patch Publication Date: 2017/07/19

Reference Information

CVE: CVE-2017-11176

OSVDB: 160817