CVSS3
Attack Vector
LOCAL
Attack Complexity
LOW
Privileges Required
LOW
User Interaction
NONE
Scope
CHANGED
Confidentiality Impact
HIGH
Integrity Impact
HIGH
Availability Impact
HIGH
CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:C/C:H/I:H/A:H
AI Score
Confidence
High
The remote Ubuntu 16.04 LTS / 18.04 LTS host has a package installed that is affected by multiple vulnerabilities as referenced in the USN-6926-1 advisory.
discovered that the NFC Controller Interface (NCI) implementation in the Linux kernel did not properly handle certain memory allocation failure conditions, leading to a null pointer dereference vulnerability. A local attacker could use this to cause a denial of service (system crash).
(CVE-2023-46343)
It was discovered that a race condition existed in the Bluetooth subsystem in the Linux kernel when modifying certain settings values through debugfs. A privileged local attacker could use this to cause a denial of service. (CVE-2024-24857, CVE-2024-24858, CVE-2024-24859)
Chenyuan Yang discovered that the Unsorted Block Images (UBI) flash device volume management subsystem did not properly validate logical eraseblock sizes in certain situations. An attacker could possibly use this to cause a denial of service (system crash). (CVE-2024-25739)
Supraja Sridhara, Benedict Schlter, Mark Kuhne, Andrin Bertschi, and Shweta Shinde discovered that the Confidential Computing framework in the Linux kernel for x86 platforms did not properly handle 32-bit emulation on TDX and SEV. An attacker with access to the VMM could use this to cause a denial of service (guest crash) or possibly execute arbitrary code. (CVE-2024-25744)
Several security issues were discovered in the Linux kernel. An attacker could possibly use these to compromise the system. This update corrects flaws in the following subsystems:
- GPU drivers;
- HID subsystem;
- I2C subsystem;
- MTD block device drivers;
- Network drivers;
- TTY drivers;
- USB subsystem;
- File systems infrastructure;
- F2FS file system;
- SMB network file system;
- BPF subsystem;
- B.A.T.M.A.N. meshing protocol;
- Bluetooth subsystem;
- Networking core;
- IPv4 networking;
- IPv6 networking;
- Netfilter;
- Unix domain sockets;
- AppArmor security module; (CVE-2023-52435, CVE-2024-27013, CVE-2024-35984, CVE-2023-52620, CVE-2024-35997, CVE-2023-52436, CVE-2024-26884, CVE-2024-26901, CVE-2023-52469, CVE-2024-35978, CVE-2024-26886, CVE-2024-35982, CVE-2024-36902, CVE-2024-26857, CVE-2024-26923, CVE-2023-52443, CVE-2024-27020, CVE-2024-36016, CVE-2024-26840, CVE-2024-26934, CVE-2023-52449, CVE-2024-26882, CVE-2023-52444, CVE-2023-52752)
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.
#%NASL_MIN_LEVEL 80900
##
# (C) Tenable, Inc.
#
# The descriptive text and package checks in this plugin were
# extracted from Ubuntu Security Notice USN-6926-1. The text
# itself is copyright (C) Canonical, Inc. See
# <https://ubuntu.com/security/notices>. Ubuntu(R) is a registered
# trademark of Canonical, Inc.
##
include('compat.inc');
if (description)
{
script_id(204834);
script_version("1.3");
script_set_attribute(attribute:"plugin_modification_date", value:"2024/09/09");
script_cve_id(
"CVE-2023-46343",
"CVE-2023-52435",
"CVE-2023-52436",
"CVE-2023-52443",
"CVE-2023-52444",
"CVE-2023-52449",
"CVE-2023-52469",
"CVE-2023-52620",
"CVE-2023-52752",
"CVE-2024-24857",
"CVE-2024-24858",
"CVE-2024-24859",
"CVE-2024-25739",
"CVE-2024-25744",
"CVE-2024-26840",
"CVE-2024-26857",
"CVE-2024-26882",
"CVE-2024-26884",
"CVE-2024-26886",
"CVE-2024-26901",
"CVE-2024-26923",
"CVE-2024-26934",
"CVE-2024-27013",
"CVE-2024-27020",
"CVE-2024-35978",
"CVE-2024-35982",
"CVE-2024-35984",
"CVE-2024-35997",
"CVE-2024-36016",
"CVE-2024-36902"
);
script_xref(name:"USN", value:"6926-1");
script_name(english:"Ubuntu 16.04 LTS / 18.04 LTS : Linux kernel vulnerabilities (USN-6926-1)");
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 16.04 LTS / 18.04 LTS host has a package installed that is affected by multiple vulnerabilities as
referenced in the USN-6926-1 advisory.
discovered that the NFC Controller Interface (NCI) implementation in the Linux kernel did not
properly handle certain memory allocation failure conditions, leading to a null pointer dereference
vulnerability. A local attacker could use this to cause a denial of service (system crash).
(CVE-2023-46343)
It was discovered that a race condition existed in the Bluetooth subsystem in the Linux kernel when
modifying certain settings values through debugfs. A privileged local attacker could use this to cause a
denial of service. (CVE-2024-24857, CVE-2024-24858, CVE-2024-24859)
Chenyuan Yang discovered that the Unsorted Block Images (UBI) flash device volume management subsystem did
not properly validate logical eraseblock sizes in certain situations. An attacker could possibly use this
to cause a denial of service (system crash). (CVE-2024-25739)
Supraja Sridhara, Benedict Schlter, Mark Kuhne, Andrin Bertschi, and Shweta Shinde discovered that the
Confidential Computing framework in the Linux kernel for x86 platforms did not properly handle 32-bit
emulation on TDX and SEV. An attacker with access to the VMM could use this to cause a denial of service
(guest crash) or possibly execute arbitrary code. (CVE-2024-25744)
Several security issues were discovered in the Linux kernel. An attacker could possibly use these to
compromise the system. This update corrects flaws in the following subsystems:
- GPU drivers;
- HID subsystem;
- I2C subsystem;
- MTD block device drivers;
- Network drivers;
- TTY drivers;
- USB subsystem;
- File systems infrastructure;
- F2FS file system;
- SMB network file system;
- BPF subsystem;
- B.A.T.M.A.N. meshing protocol;
- Bluetooth subsystem;
- Networking core;
- IPv4 networking;
- IPv6 networking;
- Netfilter;
- Unix domain sockets;
- AppArmor security module; (CVE-2023-52435, CVE-2024-27013, CVE-2024-35984, CVE-2023-52620,
CVE-2024-35997, CVE-2023-52436, CVE-2024-26884, CVE-2024-26901, CVE-2023-52469, CVE-2024-35978,
CVE-2024-26886, CVE-2024-35982, CVE-2024-36902, CVE-2024-26857, CVE-2024-26923, CVE-2023-52443,
CVE-2024-27020, CVE-2024-36016, CVE-2024-26840, CVE-2024-26934, CVE-2023-52449, CVE-2024-26882,
CVE-2023-52444, CVE-2023-52752)
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-6926-1");
script_set_attribute(attribute:"solution", value:
"Update the affected kernel package.");
script_set_cvss_base_vector("CVSS2#AV:L/AC:L/Au:S/C:C/I:C/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:C/C:H/I:H/A:H");
script_set_cvss3_temporal_vector("CVSS:3.0/E:U/RL:O/RC:C");
script_set_attribute(attribute:"cvss_score_source", value:"CVE-2024-26934");
script_set_attribute(attribute:"cvss3_score_source", value:"CVE-2024-25744");
script_set_attribute(attribute:"exploitability_ease", value:"No known exploits are available");
script_set_attribute(attribute:"exploit_available", value:"false");
script_set_attribute(attribute:"vuln_publication_date", value:"2024/01/19");
script_set_attribute(attribute:"patch_publication_date", value:"2024/07/29");
script_set_attribute(attribute:"plugin_publication_date", value:"2024/07/29");
script_set_attribute(attribute:"plugin_type", value:"local");
script_set_attribute(attribute:"cpe", value:"cpe:/o:canonical:ubuntu_linux:16.04:-:lts");
script_set_attribute(attribute:"cpe", value:"cpe:/o:canonical:ubuntu_linux:18.04:-:lts");
script_set_attribute(attribute:"cpe", value:"p-cpe:/a:canonical:ubuntu_linux:linux-image-4.15.0-1133-oracle");
script_set_attribute(attribute:"cpe", value:"p-cpe:/a:canonical:ubuntu_linux:linux-image-4.15.0-1154-kvm");
script_set_attribute(attribute:"cpe", value:"p-cpe:/a:canonical:ubuntu_linux:linux-image-4.15.0-1164-gcp");
script_set_attribute(attribute:"cpe", value:"p-cpe:/a:canonical:ubuntu_linux:linux-image-4.15.0-1170-aws");
script_set_attribute(attribute:"cpe", value:"p-cpe:/a:canonical:ubuntu_linux:linux-image-4.15.0-227-generic");
script_set_attribute(attribute:"cpe", value:"p-cpe:/a:canonical:ubuntu_linux:linux-image-4.15.0-227-lowlatency");
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) 2024 Canonical, Inc. / NASL script (C) 2024 and is owned by Tenable, Inc. or an Affiliate thereof.");
script_dependencies("ssh_get_info.nasl", "ubuntu_pro_sub_detect.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 (! ('16.04' >< os_release || '18.04' >< os_release)) audit(AUDIT_OS_NOT, 'Ubuntu 16.04 / 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 ubuntu_pro_detected = get_kb_item('Host/Ubuntu/Pro/Services/esm-apps');
ubuntu_pro_detected = !empty_or_null(ubuntu_pro_detected);
var kernel_mappings = {
'16.04': {
'4.15.0': {
'generic': '4.15.0-227',
'lowlatency': '4.15.0-227',
'oracle': '4.15.0-1133',
'gcp': '4.15.0-1164',
'aws': '4.15.0-1170'
}
},
'18.04': {
'4.15.0': {
'generic': '4.15.0-227',
'lowlatency': '4.15.0-227',
'oracle': '4.15.0-1133',
'kvm': '4.15.0-1154',
'gcp': '4.15.0-1164',
'aws': '4.15.0-1170'
}
}
};
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 (!ubuntu_pro_detected) {
extra += 'NOTE: This vulnerability check contains fixes that apply to packages only \n';
extra += 'available in Ubuntu ESM repositories. Access to these package security updates \n';
extra += 'require an Ubuntu Pro subscription.\n\n';
}
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-6926-1');
}
if (get_one_kb_item('Host/ksplice/kernel-cves'))
{
var cve_list = make_list('CVE-2023-46343', 'CVE-2023-52435', 'CVE-2023-52436', 'CVE-2023-52443', 'CVE-2023-52444', 'CVE-2023-52449', 'CVE-2023-52469', 'CVE-2023-52620', 'CVE-2023-52752', 'CVE-2024-24857', 'CVE-2024-24858', 'CVE-2024-24859', 'CVE-2024-25739', 'CVE-2024-25744', 'CVE-2024-26840', 'CVE-2024-26857', 'CVE-2024-26882', 'CVE-2024-26884', 'CVE-2024-26886', 'CVE-2024-26901', 'CVE-2024-26923', 'CVE-2024-26934', 'CVE-2024-27013', 'CVE-2024-27020', 'CVE-2024-35978', 'CVE-2024-35982', 'CVE-2024-35984', 'CVE-2024-35997', 'CVE-2024-36016', 'CVE-2024-36902');
if (ksplice_cves_check(cve_list))
{
audit(AUDIT_PATCH_INSTALLED, 'KSplice hotfix for USN-6926-1');
}
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-2023-46343
cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2023-52435
cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2023-52436
cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2023-52443
cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2023-52444
cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2023-52449
cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2023-52469
cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2023-52620
cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2023-52752
cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2024-24857
cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2024-24858
cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2024-24859
cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2024-25739
cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2024-25744
cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2024-26840
cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2024-26857
cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2024-26882
cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2024-26884
cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2024-26886
cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2024-26901
cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2024-26923
cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2024-26934
cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2024-27013
cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2024-27020
cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2024-35978
cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2024-35982
cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2024-35984
cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2024-35997
cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2024-36016
cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2024-36902
ubuntu.com/security/notices/USN-6926-1