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(103880);
script_version("3.9");
script_set_attribute(attribute:"plugin_modification_date", value:"2021/01/04");
script_cve_id(
"CVE-2017-15274"
);
script_name(english:"Virtuozzo 7 : readykernel-patch (VZA-2017-094)");
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 :
- 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.");
script_set_attribute(attribute:"see_also", value:"https://help.virtuozzo.com/customer/portal/articles/2889936");
# https://readykernel.com/patch/Virtuozzo-7/readykernel-patch-15.2-34.0-1.vl7/
script_set_attribute(attribute:"see_also", value:"http://www.nessus.org/u?02aeb8bd");
# https://readykernel.com/patch/Virtuozzo-7/readykernel-patch-18.7-34.0-1.vl7/
script_set_attribute(attribute:"see_also", value:"http://www.nessus.org/u?d2b75388");
# https://readykernel.com/patch/Virtuozzo-7/readykernel-patch-20.18-34.0-1.vl7/
script_set_attribute(attribute:"see_also", value:"http://www.nessus.org/u?18cf5f69");
# https://readykernel.com/patch/Virtuozzo-7/readykernel-patch-30.10-34.0-1.vl7/
script_set_attribute(attribute:"see_also", value:"http://www.nessus.org/u?bf945d78");
# https://readykernel.com/patch/Virtuozzo-7/readykernel-patch-30.15-34.0-1.vl7/
script_set_attribute(attribute:"see_also", value:"http://www.nessus.org/u?190905e3");
# https://readykernel.com/patch/Virtuozzo-7/readykernel-patch-33.22-34.0-1.vl7/
script_set_attribute(attribute:"see_also", value:"http://www.nessus.org/u?84e456bd");
script_set_attribute(attribute:"solution", value:"Update the readykernel patch.");
script_set_cvss_base_vector("CVSS2#AV:L/AC:L/Au:N/C:N/I:N/A:C");
script_set_cvss_temporal_vector("CVSS2#E:U/RL:OF/RC:C");
script_set_cvss3_base_vector("CVSS:3.0/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H");
script_set_cvss3_temporal_vector("CVSS:3.0/E:U/RL:O/RC:C");
script_set_attribute(attribute:"patch_publication_date", value:"2017/10/16");
script_set_attribute(attribute:"plugin_publication_date", value:"2017/10/18");
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) 2017-2021 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-3.10.0-327.18.2.vz7.15.2",
"patch","readykernel-patch-15.2-34.0-1.vl7"
),
make_array(
"kernel","vzkernel-3.10.0-327.36.1.vz7.18.7",
"patch","readykernel-patch-18.7-34.0-1.vl7"
),
make_array(
"kernel","vzkernel-3.10.0-327.36.1.vz7.20.18",
"patch","readykernel-patch-20.18-34.0-1.vl7"
),
make_array(
"kernel","vzkernel-3.10.0-514.16.1.vz7.30.10",
"patch","readykernel-patch-30.10-34.0-1.vl7"
),
make_array(
"kernel","vzkernel-3.10.0-514.16.1.vz7.30.15",
"patch","readykernel-patch-30.15-34.0-1.vl7"
),
make_array(
"kernel","vzkernel-3.10.0-514.26.1.vz7.33.22",
"patch","readykernel-patch-33.22-34.0-1.vl7"
)
);
readykernel_execute_checks(checks:checks, severity:SECURITY_WARNING, release:"Virtuozzo-7");