Virtuozzo 7 : readykernel-patch (VZA-2017-094)

Medium Nessus Plugin ID 103880

Synopsis

The remote Virtuozzo host is missing a security update.

Description

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 vulnerability :

- A flaw was discovered in the key management subsystem of the Linux kernel. It allowed to pass NULL payload with non-zero payload length as parameters to sys_add_key() and the KEYCTL_UPDATE operation of sys_keyctl(). A local unprivileged user could exploit this to cause a kernel crash (NULL pointer dereference).

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.

Solution

Update the readykernel patch.

See Also

https://help.virtuozzo.com/customer/portal/articles/2889936

http://www.nessus.org/u?02aeb8bd

http://www.nessus.org/u?d2b75388

http://www.nessus.org/u?18cf5f69

http://www.nessus.org/u?bf945d78

http://www.nessus.org/u?190905e3

http://www.nessus.org/u?84e456bd

Plugin Details

Severity: Medium

ID: 103880

File Name: Virtuozzo_VZA-2017-094.nasl

Version: 3.6

Type: local

Published: 2017/10/18

Modified: 2018/07/17

Dependencies: 12634

Risk Information

Risk Factor: Medium

CVSSv2

Base Score: 4.9

Temporal Score: 3.6

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

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

CVSSv3

Base Score: 5.5

Temporal Score: 4.8

Vector: CVSS:3.0/AV:L/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: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

Patch Publication Date: 2017/10/16

Reference Information

CVE: CVE-2017-15274