The remote Ubuntu 22.04 LTS / 23.04 host has a package installed that is affected by multiple vulnerabilities as referenced in the USN-6383-1 advisory.
A division-by-zero error on some AMD processors can potentially return speculative data resulting in loss of confidentiality. (CVE-2023-20588)
In multiple functions of mem_protect.c, there is a possible way to access hypervisor memory due to a memory access check in the wrong place. This could lead to local escalation of privilege with System execution privileges needed. User interaction is not needed for exploitation. (CVE-2023-21264)
An issue was discovered in l2cap_sock_release in net/bluetooth/l2cap_sock.c in the Linux kernel before 6.4.10. There is a use-after-free because the children of an sk are mishandled. (CVE-2023-40283)
A memory leak flaw was found in nft_set_catchall_flush in net/netfilter/nf_tables_api.c in the Linux Kernel. This issue may allow a local attacker to cause double-deactivations of catchall elements, which can result in a memory leak. (CVE-2023-4569)
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-6383-1. 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(181637);
script_version("1.5");
script_set_attribute(attribute:"plugin_modification_date", value:"2024/01/09");
script_cve_id(
"CVE-2023-4128",
"CVE-2023-4569",
"CVE-2023-20588",
"CVE-2023-21264",
"CVE-2023-40283"
);
script_xref(name:"USN", value:"6383-1");
script_name(english:"Ubuntu 22.04 LTS / 23.04 : Linux kernel vulnerabilities (USN-6383-1)");
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 22.04 LTS / 23.04 host has a package installed that is affected by multiple vulnerabilities as
referenced in the USN-6383-1 advisory.
- A division-by-zero error on some AMD processors can potentially return speculative data resulting in loss
of confidentiality. (CVE-2023-20588)
- In multiple functions of mem_protect.c, there is a possible way to access hypervisor memory due to a
memory access check in the wrong place. This could lead to local escalation of privilege with System
execution privileges needed. User interaction is not needed for exploitation. (CVE-2023-21264)
- An issue was discovered in l2cap_sock_release in net/bluetooth/l2cap_sock.c in the Linux kernel before
6.4.10. There is a use-after-free because the children of an sk are mishandled. (CVE-2023-40283)
- A memory leak flaw was found in nft_set_catchall_flush in net/netfilter/nf_tables_api.c in the Linux
Kernel. This issue may allow a local attacker to cause double-deactivations of catchall elements, which
can result in a memory leak. (CVE-2023-4569)
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-6383-1");
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: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:H/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-2023-40283");
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:"2023/08/08");
script_set_attribute(attribute:"patch_publication_date", value:"2023/09/19");
script_set_attribute(attribute:"plugin_publication_date", value:"2023/09/19");
script_set_attribute(attribute:"plugin_type", value:"local");
script_set_attribute(attribute:"cpe", value:"cpe:/o:canonical:ubuntu_linux:22.04:-:lts");
script_set_attribute(attribute:"cpe", value:"cpe:/o:canonical:ubuntu_linux:23.04");
script_set_attribute(attribute:"cpe", value:"p-cpe:/a:canonical:ubuntu_linux:linux-image-6.2.0-1005-starfive");
script_set_attribute(attribute:"cpe", value:"p-cpe:/a:canonical:ubuntu_linux:linux-image-6.2.0-1010-ibm");
script_set_attribute(attribute:"cpe", value:"p-cpe:/a:canonical:ubuntu_linux:linux-image-6.2.0-1012-aws");
script_set_attribute(attribute:"cpe", value:"p-cpe:/a:canonical:ubuntu_linux:linux-image-6.2.0-1012-azure");
script_set_attribute(attribute:"cpe", value:"p-cpe:/a:canonical:ubuntu_linux:linux-image-6.2.0-1012-azure-fde");
script_set_attribute(attribute:"cpe", value:"p-cpe:/a:canonical:ubuntu_linux:linux-image-6.2.0-1012-oracle");
script_set_attribute(attribute:"cpe", value:"p-cpe:/a:canonical:ubuntu_linux:linux-image-6.2.0-1013-lowlatency");
script_set_attribute(attribute:"cpe", value:"p-cpe:/a:canonical:ubuntu_linux:linux-image-6.2.0-1013-lowlatency-64k");
script_set_attribute(attribute:"cpe", value:"p-cpe:/a:canonical:ubuntu_linux:linux-image-6.2.0-1013-raspi");
script_set_attribute(attribute:"cpe", value:"p-cpe:/a:canonical:ubuntu_linux:linux-image-6.2.0-1014-gcp");
script_set_attribute(attribute:"cpe", value:"p-cpe:/a:canonical:ubuntu_linux:linux-image-6.2.0-33-generic");
script_set_attribute(attribute:"cpe", value:"p-cpe:/a:canonical:ubuntu_linux:linux-image-6.2.0-33-generic-64k");
script_set_attribute(attribute:"cpe", value:"p-cpe:/a:canonical:ubuntu_linux:linux-image-6.2.0-33-generic-lpae");
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) 2023-2024 Canonical, Inc. / NASL script (C) 2023-2024 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 (! ('22.04' >< os_release || '23.04' >< os_release)) audit(AUDIT_OS_NOT, 'Ubuntu 22.04 / 23.04', '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 = {
'22.04': {
'6.2.0': {
'generic': '6.2.0-33',
'generic-64k': '6.2.0-33',
'generic-lpae': '6.2.0-33',
'azure-fde': '6.2.0-1012',
'lowlatency': '6.2.0-1013',
'lowlatency-64k': '6.2.0-1013',
'gcp': '6.2.0-1014'
}
},
'23.04': {
'6.2.0': {
'generic': '6.2.0-33',
'generic-64k': '6.2.0-33',
'starfive': '6.2.0-1005',
'ibm': '6.2.0-1010',
'aws': '6.2.0-1012',
'azure': '6.2.0-1012',
'oracle': '6.2.0-1012',
'raspi': '6.2.0-1013',
'gcp': '6.2.0-1014'
}
}
};
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 = 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-6383-1');
}
if (get_one_kb_item('Host/ksplice/kernel-cves'))
{
var cve_list = make_list('CVE-2023-4128', 'CVE-2023-4569', 'CVE-2023-20588', 'CVE-2023-21264', 'CVE-2023-40283');
if (ksplice_cves_check(cve_list))
{
audit(AUDIT_PATCH_INSTALLED, 'KSplice hotfix for USN-6383-1');
}
else
{
extra = extra + ksplice_reporting_text();
}
}
if (extra) {
security_report_v4(
port : 0,
severity : SECURITY_WARNING,
extra : extra
);
exit(0);
}
Vendor | Product | Version | CPE |
---|---|---|---|
canonical | ubuntu_linux | 22.04 | cpe:/o:canonical:ubuntu_linux:22.04:-:lts |
canonical | ubuntu_linux | 23.04 | cpe:/o:canonical:ubuntu_linux:23.04 |
canonical | ubuntu_linux | linux-image-6.2.0-1005-starfive | p-cpe:/a:canonical:ubuntu_linux:linux-image-6.2.0-1005-starfive |
canonical | ubuntu_linux | linux-image-6.2.0-1010-ibm | p-cpe:/a:canonical:ubuntu_linux:linux-image-6.2.0-1010-ibm |
canonical | ubuntu_linux | linux-image-6.2.0-1012-aws | p-cpe:/a:canonical:ubuntu_linux:linux-image-6.2.0-1012-aws |
canonical | ubuntu_linux | linux-image-6.2.0-1012-azure | p-cpe:/a:canonical:ubuntu_linux:linux-image-6.2.0-1012-azure |
canonical | ubuntu_linux | linux-image-6.2.0-1012-azure-fde | p-cpe:/a:canonical:ubuntu_linux:linux-image-6.2.0-1012-azure-fde |
canonical | ubuntu_linux | linux-image-6.2.0-1012-oracle | p-cpe:/a:canonical:ubuntu_linux:linux-image-6.2.0-1012-oracle |
canonical | ubuntu_linux | linux-image-6.2.0-1013-lowlatency | p-cpe:/a:canonical:ubuntu_linux:linux-image-6.2.0-1013-lowlatency |
canonical | ubuntu_linux | linux-image-6.2.0-1013-lowlatency-64k | p-cpe:/a:canonical:ubuntu_linux:linux-image-6.2.0-1013-lowlatency-64k |
cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2023-20588
cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2023-21264
cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2023-40283
cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2023-4128
cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2023-4569
ubuntu.com/security/notices/USN-6383-1