Virtuozzo 7 : readykernel-patch (VZA-2017-077)

Medium Nessus Plugin ID 102979

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 vulnerabilities :

- The __ip6_append_data function in net/ipv6/ip6_output.c in the Linux kernel through 4.11.3 is too late in checking whether an overwrite of an skb data structure may occur, which allows local users to cause a denial of service (system crash) via crafted system calls.

- A divide-by-zero vulnerability was found in the
__tcp_select_window function in the Linux kernel. This can result in a kernel panic causing a local denial-of-service.

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/2870907

http://www.nessus.org/u?8cc3d032

http://www.nessus.org/u?68ad1633

http://www.nessus.org/u?0f4fe5aa

Plugin Details

Severity: Medium

ID: 102979

File Name: Virtuozzo_VZA-2017-077.nasl

Version: 3.5

Type: local

Published: 2017/09/07

Modified: 2018/06/29

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

Exploit Available: false

Exploit Ease: No known exploits are available

Patch Publication Date: 2017/09/06

Reference Information

CVE: CVE-2017-14106, CVE-2017-9242