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 :
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.
#%NASL_MIN_LEVEL 70300
#
# (C) Tenable Network Security, Inc.
#
include('deprecated_nasl_level.inc');
include('compat.inc');
if (description)
{
script_id(121099);
script_version("1.4");
script_set_attribute(attribute:"plugin_modification_date", value:"2021/01/04");
script_cve_id(
"CVE-2018-18559"
);
script_name(english:"Virtuozzo 7 : readykernel-patch (VZA-2018-077)");
script_summary(english:"Checks the readykernel output for the updated patch.");
script_set_attribute(attribute:"synopsis", value:
"The remote Virtuozzo host is missing a security update.");
script_set_attribute(attribute:"description", value:
"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 :
- It was discovered that a race condition between
packet_do_bind() and packet_notifier() in the
implementation of AF_PACKET could lead to
use-after-free. An unprivileged user on the host or in
a container could exploit this to crash the kernel or,
potentially, to escalate their privileges in the
system.
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.");
script_set_attribute(attribute:"see_also", value:"https://virtuozzosupport.force.com/s/article/VZA-2018-077");
script_set_attribute(attribute:"see_also", value:"https://bugzilla.redhat.com/show_bug.cgi?id=1641878");
# https://readykernel.com/patch/Virtuozzo-7/readykernel-patch-30.10-64.0-1.vl7/
script_set_attribute(attribute:"see_also", value:"http://www.nessus.org/u?c79aa27f");
# https://readykernel.com/patch/Virtuozzo-7/readykernel-patch-30.15-64.0-1.vl7/
script_set_attribute(attribute:"see_also", value:"http://www.nessus.org/u?ddc45733");
# https://readykernel.com/patch/Virtuozzo-7/readykernel-patch-33.22-64.0-1.vl7/
script_set_attribute(attribute:"see_also", value:"http://www.nessus.org/u?1cdcc3b1");
# https://readykernel.com/patch/Virtuozzo-7/readykernel-patch-37.30-64.0-1.vl7/
script_set_attribute(attribute:"see_also", value:"http://www.nessus.org/u?f7e8bd1a");
# https://readykernel.com/patch/Virtuozzo-7/readykernel-patch-40.4-64.0-1.vl7/
script_set_attribute(attribute:"see_also", value:"http://www.nessus.org/u?0780e2cd");
# https://readykernel.com/patch/Virtuozzo-7/readykernel-patch-43.10-64.0-1.vl7/
script_set_attribute(attribute:"see_also", value:"http://www.nessus.org/u?6a2bd624");
# https://readykernel.com/patch/Virtuozzo-7/readykernel-patch-46.7-64.0-1.vl7/
script_set_attribute(attribute:"see_also", value:"http://www.nessus.org/u?fde3c1c0");
# https://readykernel.com/patch/Virtuozzo-7/readykernel-patch-48.2-64.0-1.vl7/
script_set_attribute(attribute:"see_also", value:"http://www.nessus.org/u?eba12cd9");
# https://readykernel.com/patch/Virtuozzo-7/readykernel-patch-63.3-64.0-1.vl7/
script_set_attribute(attribute:"see_also", value:"http://www.nessus.org/u?9cd311b1");
# https://readykernel.com/patch/Virtuozzo-7/readykernel-patch-64.7-64.0-1.vl7/
script_set_attribute(attribute:"see_also", value:"http://www.nessus.org/u?89ad151d");
script_set_attribute(attribute:"solution", value:"Update the readykernel patch.");
script_set_cvss_base_vector("CVSS2#AV:N/AC:M/Au:N/C:P/I:P/A:P");
script_set_cvss_temporal_vector("CVSS2#E:U/RL:OF/RC:C");
script_set_cvss3_base_vector("CVSS:3.0/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:H");
script_set_cvss3_temporal_vector("CVSS:3.0/E:U/RL:O/RC:C");
script_set_attribute(attribute:"exploitability_ease", value:"No known exploits are available");
script_set_attribute(attribute:"patch_publication_date", value:"2018/10/26");
script_set_attribute(attribute:"plugin_publication_date", value:"2019/01/11");
script_set_attribute(attribute:"plugin_type", value:"local");
script_set_attribute(attribute:"cpe", value:"p-cpe:/a:virtuozzo:virtuozzo:readykernel");
script_set_attribute(attribute:"cpe", value:"cpe:/o:virtuozzo:virtuozzo:7");
script_set_attribute(attribute:"generated_plugin", value:"current");
script_end_attributes();
script_category(ACT_GATHER_INFO);
script_family(english:"Virtuozzo Local Security Checks");
script_copyright(english:"This script is Copyright (C) 2019-2021 and is owned by Tenable, Inc. or an Affiliate thereof.");
script_dependencies("ssh_get_info.nasl");
script_require_keys("Host/local_checks_enabled", "Host/Virtuozzo/release", "Host/Virtuozzo/rpm-list", "Host/readykernel-info");
exit(0);
}
include("global_settings.inc");
include("readykernel.inc");
if (!get_kb_item("Host/local_checks_enabled")) audit(AUDIT_LOCAL_CHECKS_NOT_ENABLED);
release = get_kb_item("Host/Virtuozzo/release");
if (isnull(release) || "Virtuozzo" >!< release) audit(AUDIT_OS_NOT, "Virtuozzo");
os_ver = pregmatch(pattern: "Virtuozzo Linux release ([0-9]+\.[0-9])(\D|$)", string:release);
if (isnull(os_ver)) audit(AUDIT_UNKNOWN_APP_VER, "Virtuozzo");
os_ver = os_ver[1];
if (! preg(pattern:"^7([^0-9]|$)", string:os_ver)) audit(AUDIT_OS_NOT, "Virtuozzo 7.x", "Virtuozzo " + os_ver);
if (!get_kb_item("Host/Virtuozzo/rpm-list")) audit(AUDIT_PACKAGE_LIST_MISSING);
cpu = get_kb_item("Host/cpu");
if (isnull(cpu)) audit(AUDIT_UNKNOWN_ARCH);
if ("x86_64" >!< cpu && cpu !~ "^i[3-6]86$") audit(AUDIT_LOCAL_CHECKS_NOT_IMPLEMENTED, "Virtuozzo", cpu);
rk_info = get_kb_item("Host/readykernel-info");
if (empty_or_null(rk_info)) audit(AUDIT_UNKNOWN_APP_VER, "Virtuozzo");
checks = make_list2(
make_array(
"kernel","vzkernel-3.10.0-514.16.1.vz7.30.10",
"patch","readykernel-patch-30.10-64.0-1.vl7"
),
make_array(
"kernel","vzkernel-3.10.0-514.16.1.vz7.30.15",
"patch","readykernel-patch-30.15-64.0-1.vl7"
),
make_array(
"kernel","vzkernel-3.10.0-514.26.1.vz7.33.22",
"patch","readykernel-patch-33.22-64.0-1.vl7"
),
make_array(
"kernel","vzkernel-3.10.0-693.1.1.vz7.37.30",
"patch","readykernel-patch-37.30-64.0-1.vl7"
),
make_array(
"kernel","vzkernel-3.10.0-693.11.6.vz7.40.4",
"patch","readykernel-patch-40.4-64.0-1.vl7"
),
make_array(
"kernel","vzkernel-3.10.0-693.17.1.vz7.43.10",
"patch","readykernel-patch-43.10-64.0-1.vl7"
),
make_array(
"kernel","vzkernel-3.10.0-693.21.1.vz7.46.7",
"patch","readykernel-patch-46.7-64.0-1.vl7"
),
make_array(
"kernel","vzkernel-3.10.0-693.21.1.vz7.48.2",
"patch","readykernel-patch-48.2-64.0-1.vl7"
),
make_array(
"kernel","vzkernel-3.10.0-862.9.1.vz7.63.3",
"patch","readykernel-patch-63.3-64.0-1.vl7"
),
make_array(
"kernel","vzkernel-3.10.0-862.11.6.vz7.64.7",
"patch","readykernel-patch-64.7-64.0-1.vl7"
)
);
readykernel_execute_checks(checks:checks, severity:SECURITY_WARNING, release:"Virtuozzo-7");
cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2018-18559
www.nessus.org/u?0780e2cd
www.nessus.org/u?1cdcc3b1
www.nessus.org/u?6a2bd624
www.nessus.org/u?89ad151d
www.nessus.org/u?9cd311b1
www.nessus.org/u?c79aa27f
www.nessus.org/u?ddc45733
www.nessus.org/u?eba12cd9
www.nessus.org/u?f7e8bd1a
www.nessus.org/u?fde3c1c0
bugzilla.redhat.com/show_bug.cgi?id=1641878
virtuozzosupport.force.com/s/article/VZA-2018-077