Ubuntu 22.04 LTS / 23.10 : Linux kernel vulnerabilities (USN-6651-1)

#%NASL_MIN_LEVEL 80900
##
# (C) Tenable, Inc.
#
# The descriptive text and package checks in this plugin were
# extracted from Ubuntu Security Notice USN-6651-1. 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(190942);
  script_version("1.3");
  script_set_attribute(attribute:"plugin_modification_date", value:"2024/08/27");

  script_cve_id(
    "CVE-2023-51780",
    "CVE-2023-51781",
    "CVE-2023-6915",
    "CVE-2024-0565",
    "CVE-2024-0582",
    "CVE-2024-0646"
  );
  script_xref(name:"USN", value:"6651-1");

  script_name(english:"Ubuntu 22.04 LTS / 23.10 : Linux kernel vulnerabilities (USN-6651-1)");

  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 / 23.10 host has a package installed that is affected by multiple vulnerabilities as
referenced in the USN-6651-1 advisory.

    It was discovered that a race condition existed in the ATM (Asynchronous Transfer Mode) subsystem of the
    Linux kernel, leading to a use-after-free vulnerability. A local attacker could use this to cause a denial
    of service (system crash) or possibly execute arbitrary code. (CVE-2023-51780)

    It was discovered that a race condition existed in the AppleTalk networking subsystem of the Linux kernel,
    leading to a use-after-free vulnerability. A local attacker could use this to cause a denial of service
    (system crash) or possibly execute arbitrary code. (CVE-2023-51781)

    Zhenghan Wang discovered that the generic ID allocator implementation in the Linux kernel did not properly
    check for null bitmap when releasing IDs. A local attacker could use this to cause a denial of service
    (system crash). (CVE-2023-6915)

    Robert Morris discovered that the CIFS network file system implementation in the Linux kernel did not
    properly validate certain server commands fields, leading to an out-of-bounds read vulnerability. An
    attacker could use this to cause a denial of service (system crash) or possibly expose sensitive
    information. (CVE-2024-0565)

    Jann Horn discovered that the io_uring subsystem in the Linux kernel did not properly handle the release
    of certain buffer rings. A local attacker could use this to cause a denial of service (system crash) or
    possibly execute arbitrary code. (CVE-2024-0582)

    Jann Horn discovered that the TLS subsystem in the Linux kernel did not properly handle spliced messages,
    leading to an out-of-bounds write vulnerability. A local attacker could use this to cause a denial of
    service (system crash) or possibly execute arbitrary code. (CVE-2024-0646)

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-6651-1");
  script_set_attribute(attribute:"solution", value:
"Update the affected kernel package.");
  script_set_cvss_base_vector("CVSS2#AV:A/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:U/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-2024-0565");
  script_set_attribute(attribute:"cvss3_score_source", value:"CVE-2024-0646");

  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:"2024/01/09");
  script_set_attribute(attribute:"patch_publication_date", value:"2024/02/23");
  script_set_attribute(attribute:"plugin_publication_date", value:"2024/02/23");

  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:23.10");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:canonical:ubuntu_linux:linux-image-6.5.0-1008-starfive");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:canonical:ubuntu_linux:linux-image-6.5.0-1010-laptop");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:canonical:ubuntu_linux:linux-image-6.5.0-1011-raspi");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:canonical:ubuntu_linux:linux-image-6.5.0-1014-aws");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:canonical:ubuntu_linux:linux-image-6.5.0-1014-gcp");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:canonical:ubuntu_linux:linux-image-6.5.0-1016-oracle");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:canonical:ubuntu_linux:linux-image-6.5.0-21-generic");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:canonical:ubuntu_linux:linux-image-6.5.0-21-generic-64k");
  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", "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 || '23.10' >< os_release)) audit(AUDIT_OS_NOT, 'Ubuntu 22.04 / 23.10', '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': {
    '6.5.0': {
      'generic': '6.5.0-21',
      'generic-64k': '6.5.0-21'
    }
  },
  '23.10': {
    '6.5.0': {
      'generic': '6.5.0-21',
      'generic-64k': '6.5.0-21',
      'starfive': '6.5.0-1008',
      'laptop': '6.5.0-1010',
      'raspi': '6.5.0-1011',
      'aws': '6.5.0-1014',
      'gcp': '6.5.0-1014',
      'oracle': '6.5.0-1016'
    }
  }
};

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-6651-1');
}

if (get_one_kb_item('Host/ksplice/kernel-cves'))
{
  var cve_list = make_list('CVE-2023-6915', 'CVE-2023-51780', 'CVE-2023-51781', 'CVE-2024-0565', 'CVE-2024-0582', 'CVE-2024-0646');
  if (ksplice_cves_check(cve_list))
  {
    audit(AUDIT_PATCH_INSTALLED, 'KSplice hotfix for USN-6651-1');
  }
  else
  {
    extra = extra + ksplice_reporting_text();
  }
}
if (extra) {
  security_report_v4(
    port       : 0,
    severity   : SECURITY_HOLE,
    extra      : extra
  );
  exit(0);
}