CVSS2
Attack Vector
LOCAL
Attack Complexity
MEDIUM
Authentication
NONE
Confidentiality Impact
NONE
Integrity Impact
PARTIAL
Availability Impact
COMPLETE
AV:L/AC:M/Au:N/C:N/I:P/A:C
CVSS3
Attack Vector
NETWORK
Attack Complexity
LOW
Privileges Required
NONE
User Interaction
NONE
Scope
UNCHANGED
Confidentiality Impact
NONE
Integrity Impact
NONE
Availability Impact
HIGH
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
AI Score
Confidence
High
EPSS
Percentile
83.7%
The remote Ubuntu 18.04 LTS host has a package installed that is affected by multiple vulnerabilities as referenced in the USN-4344-1 advisory.
It was discovered that the Intel Wi-Fi driver in the Linux kernel did not properly check for errors in some situations. A local attacker could possibly use this to cause a denial of service (system crash).
(CVE-2019-16234)
It was discovered that the Intel WiMAX 2400 driver in the Linux kernel did not properly deallocate memory in certain situations. A local attacker could use this to cause a denial of service (kernel memory exhaustion). (CVE-2019-19051)
Tristan Madani discovered that the block I/O tracing implementation in the Linux kernel contained a race condition. A local attacker could use this to cause a denial of service (system crash) or possibly expose sensitive information. (CVE-2019-19768)
It was discovered that the vhost net driver in the Linux kernel contained a stack buffer overflow. A local attacker with the ability to perform ioctl() calls on /dev/vhost-net could use this to cause a denial of service (system crash). (CVE-2020-10942)
It was discovered that the virtual terminal implementation in the Linux kernel contained a race condition.
A local attacker could possibly use this to cause a denial of service (system crash) or expose sensitive information. (CVE-2020-8648)
Shijie Luo discovered that the ext4 file system implementation in the Linux kernel did not properly check for a too-large journal size. An attacker could use this to construct a malicious ext4 image that, when mounted, could cause a denial of service (soft lockup). (CVE-2020-8992)
Jordy Zomer discovered that the floppy driver in the Linux kernel did not properly check for errors in some situations. A local attacker could possibly use this to cause a denial of service (system crash) or possibly expose sensitive information. (CVE-2020-9383)
Tenable has extracted the preceding description block directly from the Ubuntu security advisory.
Note that Nessus has not tested for these issues but has instead relied only on the application’s self-reported version number.
#
# (C) Tenable Network Security, Inc.
#
# The descriptive text and package checks in this plugin were
# extracted from Ubuntu Security Notice USN-4344-1. The text
# itself is copyright (C) Canonical, Inc. See
# <http://www.ubuntu.com/usn/>. Ubuntu(R) is a registered
# trademark of Canonical, Inc.
#
include('compat.inc');
if (description)
{
script_id(136087);
script_version("1.9");
script_set_attribute(attribute:"plugin_modification_date", value:"2024/08/27");
script_cve_id(
"CVE-2019-16234",
"CVE-2019-19051",
"CVE-2019-19768",
"CVE-2020-10942",
"CVE-2020-8648",
"CVE-2020-8992",
"CVE-2020-9383"
);
script_xref(name:"USN", value:"4344-1");
script_name(english:"Ubuntu 18.04 LTS : Linux kernel vulnerabilities (USN-4344-1)");
script_set_attribute(attribute:"synopsis", value:
"The remote Ubuntu host is missing one or more security updates.");
script_set_attribute(attribute:"description", value:
"The remote Ubuntu 18.04 LTS host has a package installed that is affected by multiple vulnerabilities as referenced in
the USN-4344-1 advisory.
It was discovered that the Intel Wi-Fi driver in the Linux kernel did not properly check for errors in
some situations. A local attacker could possibly use this to cause a denial of service (system crash).
(CVE-2019-16234)
It was discovered that the Intel WiMAX 2400 driver in the Linux kernel did not properly deallocate memory
in certain situations. A local attacker could use this to cause a denial of service (kernel memory
exhaustion). (CVE-2019-19051)
Tristan Madani discovered that the block I/O tracing implementation in the Linux kernel contained a race
condition. A local attacker could use this to cause a denial of service (system crash) or possibly expose
sensitive information. (CVE-2019-19768)
It was discovered that the vhost net driver in the Linux kernel contained a stack buffer overflow. A local
attacker with the ability to perform ioctl() calls on /dev/vhost-net could use this to cause a denial of
service (system crash). (CVE-2020-10942)
It was discovered that the virtual terminal implementation in the Linux kernel contained a race condition.
A local attacker could possibly use this to cause a denial of service (system crash) or expose sensitive
information. (CVE-2020-8648)
Shijie Luo discovered that the ext4 file system implementation in the Linux kernel did not properly check
for a too-large journal size. An attacker could use this to construct a malicious ext4 image that, when
mounted, could cause a denial of service (soft lockup). (CVE-2020-8992)
Jordy Zomer discovered that the floppy driver in the Linux kernel did not properly check for errors in
some situations. A local attacker could possibly use this to cause a denial of service (system crash) or
possibly expose sensitive information. (CVE-2020-9383)
Tenable has extracted the preceding description block directly from the Ubuntu security advisory.
Note that Nessus has not tested for these issues but has instead relied only on the application's self-reported version
number.");
script_set_attribute(attribute:"see_also", value:"https://ubuntu.com/security/notices/USN-4344-1");
script_set_attribute(attribute:"solution", value:
"Update the affected kernel package.");
script_set_cvss_base_vector("CVSS2#AV:L/AC:M/Au:N/C:N/I:P/A:C");
script_set_cvss_temporal_vector("CVSS2#E:POC/RL:OF/RC:C");
script_set_cvss3_base_vector("CVSS:3.0/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:N/A:H");
script_set_cvss3_temporal_vector("CVSS:3.0/E:P/RL:O/RC:C");
script_set_attribute(attribute:"cvss_score_source", value:"CVE-2020-10942");
script_set_attribute(attribute:"cvss3_score_source", value:"CVE-2020-9383");
script_set_attribute(attribute:"exploitability_ease", value:"Exploits are available");
script_set_attribute(attribute:"exploit_available", value:"true");
script_set_attribute(attribute:"vuln_publication_date", value:"2019/09/11");
script_set_attribute(attribute:"patch_publication_date", value:"2020/04/28");
script_set_attribute(attribute:"plugin_publication_date", value:"2020/04/29");
script_set_attribute(attribute:"plugin_type", value:"local");
script_set_attribute(attribute:"cpe", value:"p-cpe:/a:canonical:ubuntu_linux:linux-image-5.0.0-1035-gke");
script_set_attribute(attribute:"cpe", value:"p-cpe:/a:canonical:ubuntu_linux:linux-image-5.0.0-1050-oem-osp1");
script_set_attribute(attribute:"cpe", value:"cpe:/o:canonical:ubuntu_linux:18.04:-:lts");
script_set_attribute(attribute:"generated_plugin", value:"current");
script_end_attributes();
script_category(ACT_GATHER_INFO);
script_family(english:"Ubuntu Local Security Checks");
script_copyright(english:"Ubuntu Security Notice (C) 2020-2024 Canonical, Inc. / NASL script (C) 2020-2024 and is owned by Tenable, Inc. or an Affiliate thereof.");
script_dependencies("ssh_get_info.nasl", "linux_alt_patch_detect.nasl");
script_require_keys("Host/cpu", "Host/Ubuntu", "Host/Ubuntu/release", "Host/Debian/dpkg-l");
exit(0);
}
include('debian_package.inc');
include('ksplice.inc');
if ( ! get_kb_item('Host/local_checks_enabled') ) audit(AUDIT_LOCAL_CHECKS_NOT_ENABLED);
var os_release = get_kb_item('Host/Ubuntu/release');
if ( isnull(os_release) ) audit(AUDIT_OS_NOT, 'Ubuntu');
os_release = chomp(os_release);
if (! ('18.04' >< os_release)) audit(AUDIT_OS_NOT, 'Ubuntu 18.04', 'Ubuntu ' + os_release);
if ( ! get_kb_item('Host/Debian/dpkg-l') ) audit(AUDIT_PACKAGE_LIST_MISSING);
var cpu = get_kb_item('Host/cpu');
if (isnull(cpu)) audit(AUDIT_UNKNOWN_ARCH);
if ('x86_64' >!< cpu && cpu !~ "^i[3-6]86$" && 's390' >!< cpu && 'aarch64' >!< cpu) audit(AUDIT_LOCAL_CHECKS_NOT_IMPLEMENTED, 'Ubuntu', cpu);
var kernel_mappings = {
'18.04': {
'5.0.0': {
'gke': '5.0.0-1035',
'oem-osp1': '5.0.0-1050'
}
}
};
var host_kernel_release = get_kb_item('Host/uptrack-uname-r');
if (empty_or_null(host_kernel_release)) host_kernel_release = get_kb_item_or_exit('Host/uname-r');
var host_kernel_base_version = get_kb_item_or_exit('Host/Debian/kernel-base-version');
var host_kernel_type = get_kb_item_or_exit('Host/Debian/kernel-type');
if(empty_or_null(kernel_mappings[os_release][host_kernel_base_version][host_kernel_type])) audit(AUDIT_INST_VER_NOT_VULN, 'kernel ' + host_kernel_release);
var extra = '';
var kernel_fixed_version = kernel_mappings[os_release][host_kernel_base_version][host_kernel_type] + "-" + host_kernel_type;
if (deb_ver_cmp(ver1:host_kernel_release, ver2:kernel_fixed_version) < 0)
{
extra += 'Running Kernel level of ' + host_kernel_release + ' does not meet the minimum fixed level of ' + kernel_fixed_version + ' for this advisory.\n\n';
}
else
{
audit(AUDIT_PATCH_INSTALLED, 'Kernel package for USN-4344-1');
}
if (get_one_kb_item('Host/ksplice/kernel-cves'))
{
var cve_list = make_list('CVE-2019-16234', 'CVE-2019-19051', 'CVE-2019-19768', 'CVE-2020-8648', 'CVE-2020-8992', 'CVE-2020-9383', 'CVE-2020-10942');
if (ksplice_cves_check(cve_list))
{
audit(AUDIT_PATCH_INSTALLED, 'KSplice hotfix for USN-4344-1');
}
else
{
extra = extra + ksplice_reporting_text();
}
}
if (extra) {
security_report_v4(
port : 0,
severity : SECURITY_WARNING,
extra : extra
);
exit(0);
}
cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2019-16234
cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2019-19051
cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2019-19768
cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2020-10942
cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2020-8648
cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2020-8992
cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2020-9383
ubuntu.com/security/notices/USN-4344-1
CVSS2
Attack Vector
LOCAL
Attack Complexity
MEDIUM
Authentication
NONE
Confidentiality Impact
NONE
Integrity Impact
PARTIAL
Availability Impact
COMPLETE
AV:L/AC:M/Au:N/C:N/I:P/A:C
CVSS3
Attack Vector
NETWORK
Attack Complexity
LOW
Privileges Required
NONE
User Interaction
NONE
Scope
UNCHANGED
Confidentiality Impact
NONE
Integrity Impact
NONE
Availability Impact
HIGH
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
AI Score
Confidence
High
EPSS
Percentile
83.7%