4.9 Medium
CVSS2
Attack Vector
LOCAL
Attack Complexity
LOW
Authentication
NONE
Confidentiality Impact
NONE
Integrity Impact
NONE
Availability Impact
COMPLETE
AV:L/AC:L/Au:N/C:N/I:N/A:C
5.5 Medium
CVSS3
Attack Vector
LOCAL
Attack Complexity
LOW
Privileges Required
LOW
User Interaction
NONE
Scope
UNCHANGED
Confidentiality Impact
NONE
Integrity Impact
NONE
Availability Impact
HIGH
CVSS:3.0/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H
0.001 Low
EPSS
Percentile
28.3%
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(110232);
script_version("1.6");
script_set_attribute(attribute:"plugin_modification_date", value:"2021/01/04");
script_cve_id(
"CVE-2018-5803"
);
script_name(english:"Virtuozzo 7 : readykernel-patch (VZA-2018-035)");
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 found that _sctp_make_chunk() function did not
check if the chunk length for INIT and INIT_ACK packets
was within the allowed limits. A local attacker could
exploit this to trigger a kernel crash.
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/2941801");
script_set_attribute(attribute:"see_also", value:"https://access.redhat.com/security/cve/cve-2018-5803");
# https://readykernel.com/patch/Virtuozzo-7/readykernel-patch-20.18-52.0-2.vl7/
script_set_attribute(attribute:"see_also", value:"http://www.nessus.org/u?f8a47bcc");
# https://readykernel.com/patch/Virtuozzo-7/readykernel-patch-30.10-52.0-2.vl7/
script_set_attribute(attribute:"see_also", value:"http://www.nessus.org/u?582a2cb7");
# https://readykernel.com/patch/Virtuozzo-7/readykernel-patch-30.15-52.0-2.vl7/
script_set_attribute(attribute:"see_also", value:"http://www.nessus.org/u?1d19de5d");
# https://readykernel.com/patch/Virtuozzo-7/readykernel-patch-33.22-52.0-2.vl7/
script_set_attribute(attribute:"see_also", value:"http://www.nessus.org/u?82bd7955");
# https://readykernel.com/patch/Virtuozzo-7/readykernel-patch-37.30-52.0-2.vl7/
script_set_attribute(attribute:"see_also", value:"http://www.nessus.org/u?fecc47bd");
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_cvss3_base_vector("CVSS:3.0/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H");
script_set_attribute(attribute:"patch_publication_date", value:"2018/05/30");
script_set_attribute(attribute:"plugin_publication_date", value:"2018/05/31");
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) 2018-2021 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-3.10.0-327.42.0.vz7.20.18",
"patch","readykernel-patch-20.18-52.0-2.vl7"
),
make_array(
"kernel","vzkernel-3.10.0-514.16.1.vz7.30.10",
"patch","readykernel-patch-30.10-52.0-2.vl7"
),
make_array(
"kernel","vzkernel-3.10.0-514.16.1.vz7.30.15",
"patch","readykernel-patch-30.15-52.0-2.vl7"
),
make_array(
"kernel","vzkernel-3.10.0-514.26.1.vz7.33.22",
"patch","readykernel-patch-33.22-52.0-2.vl7"
),
make_array(
"kernel","vzkernel-3.10.0-693.1.1.vz7.37.30",
"patch","readykernel-patch-37.30-52.0-2.vl7"
)
);
readykernel_execute_checks(checks:checks, severity:SECURITY_WARNING, release:"Virtuozzo-7");
4.9 Medium
CVSS2
Attack Vector
LOCAL
Attack Complexity
LOW
Authentication
NONE
Confidentiality Impact
NONE
Integrity Impact
NONE
Availability Impact
COMPLETE
AV:L/AC:L/Au:N/C:N/I:N/A:C
5.5 Medium
CVSS3
Attack Vector
LOCAL
Attack Complexity
LOW
Privileges Required
LOW
User Interaction
NONE
Scope
UNCHANGED
Confidentiality Impact
NONE
Integrity Impact
NONE
Availability Impact
HIGH
CVSS:3.0/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H
0.001 Low
EPSS
Percentile
28.3%