Ubuntu 22.10 : Linux kernel vulnerabilities (USN-5700-1)

#%NASL_MIN_LEVEL 80900
##
# (C) Tenable, Inc.
#
# The descriptive text and package checks in this plugin were
# extracted from Ubuntu Security Notice USN-5700-1. 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(166559);
  script_version("1.5");
  script_set_attribute(attribute:"plugin_modification_date", value:"2023/10/06");

  script_cve_id(
    "CVE-2022-2602",
    "CVE-2022-41674",
    "CVE-2022-42719",
    "CVE-2022-42720",
    "CVE-2022-42721",
    "CVE-2022-42722"
  );
  script_xref(name:"USN", value:"5700-1");

  script_name(english:"Ubuntu 22.10 : Linux kernel vulnerabilities (USN-5700-1)");

  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 22.10 host has a package installed that is affected by multiple vulnerabilities as referenced in the
USN-5700-1 advisory.

  - An issue was discovered in the Linux kernel before 5.19.16. Attackers able to inject WLAN frames could
    cause a buffer overflow in the ieee80211_bss_info_update function in net/mac80211/scan.c. (CVE-2022-41674)

  - A use-after-free in the mac80211 stack when parsing a multi-BSSID element in the Linux kernel 5.2 through
    5.19.x before 5.19.16 could be used by attackers (able to inject WLAN frames) to crash the kernel and
    potentially execute code. (CVE-2022-42719)

  - Various refcounting bugs in the multi-BSS handling in the mac80211 stack in the Linux kernel 5.1 through
    5.19.x before 5.19.16 could be used by local attackers (able to inject WLAN frames) to trigger use-after-
    free conditions to potentially execute code. (CVE-2022-42720)

  - A list management bug in BSS handling in the mac80211 stack in the Linux kernel 5.1 through 5.19.x before
    5.19.16 could be used by local attackers (able to inject WLAN frames) to corrupt a linked list and, in
    turn, potentially execute code. (CVE-2022-42721)

  - In the Linux kernel 5.8 through 5.19.x before 5.19.16, local attackers able to inject WLAN frames into the
    mac80211 stack could cause a NULL pointer dereference denial-of-service attack against the beacon
    protection of P2P devices. (CVE-2022-42722)

  - A flaw was found in hw. Mis-trained branch predictions for return instructions may allow arbitrary
    speculative code execution under certain microarchitecture-dependent conditions. (CVE-2022-23816)
    (CVE-2022-2602)

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-5700-1");
  script_set_attribute(attribute:"solution", value:
"Update the affected kernel package.");
  script_set_cvss_base_vector("CVSS2#AV:A/AC:L/Au:N/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:A/AC:L/PR:N/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-2022-42719");

  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:"2022/10/13");
  script_set_attribute(attribute:"patch_publication_date", value:"2022/10/26");
  script_set_attribute(attribute:"plugin_publication_date", value:"2022/10/26");

  script_set_attribute(attribute:"plugin_type", value:"local");
  script_set_attribute(attribute:"cpe", value:"cpe:/o:canonical:ubuntu_linux:22.10");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:canonical:ubuntu_linux:linux-image-5.19.0-1006-raspi");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:canonical:ubuntu_linux:linux-image-5.19.0-1006-raspi-nolpae");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:canonical:ubuntu_linux:linux-image-5.19.0-1009-lowlatency");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:canonical:ubuntu_linux:linux-image-5.19.0-1009-lowlatency-64k");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:canonical:ubuntu_linux:linux-image-5.19.0-1010-azure");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:canonical:ubuntu_linux:linux-image-5.19.0-1010-gcp");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:canonical:ubuntu_linux:linux-image-5.19.0-1010-ibm");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:canonical:ubuntu_linux:linux-image-5.19.0-1010-kvm");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:canonical:ubuntu_linux:linux-image-5.19.0-1010-oracle");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:canonical:ubuntu_linux:linux-image-5.19.0-1011-aws");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:canonical:ubuntu_linux:linux-image-5.19.0-23-generic");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:canonical:ubuntu_linux:linux-image-5.19.0-23-generic-64k");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:canonical:ubuntu_linux:linux-image-5.19.0-23-generic-lpae");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:canonical:ubuntu_linux:linux-image-aws");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:canonical:ubuntu_linux:linux-image-azure");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:canonical:ubuntu_linux:linux-image-gcp");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:canonical:ubuntu_linux:linux-image-generic");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:canonical:ubuntu_linux:linux-image-generic-64k");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:canonical:ubuntu_linux:linux-image-generic-lpae");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:canonical:ubuntu_linux:linux-image-ibm");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:canonical:ubuntu_linux:linux-image-kvm");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:canonical:ubuntu_linux:linux-image-lowlatency");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:canonical:ubuntu_linux:linux-image-lowlatency-64k");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:canonical:ubuntu_linux:linux-image-oracle");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:canonical:ubuntu_linux:linux-image-raspi");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:canonical:ubuntu_linux:linux-image-raspi-nolpae");
  script_end_attributes();

  script_category(ACT_GATHER_INFO);
  script_family(english:"Ubuntu Local Security Checks");

  script_copyright(english:"Ubuntu Security Notice (C) 2022-2023 Canonical, Inc. / NASL script (C) 2022-2023 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 (! preg(pattern:"^(22\.10)$", string:os_release)) audit(AUDIT_OS_NOT, 'Ubuntu 22.10', '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 machine_kernel_release = get_kb_item_or_exit('Host/uname-r');
if (machine_kernel_release)
{
  if (! preg(pattern:"^(5.19.0-\d{2}-(generic|generic-64k|generic-lpae)|5.19.0-\d{4}-(aws|azure|gcp|ibm|kvm|lowlatency|lowlatency-64k|oracle|raspi|raspi-nolpae))$", string:machine_kernel_release)) audit(AUDIT_INST_VER_NOT_VULN, 'kernel ' + machine_kernel_release);
  var extra = '';
  var kernel_mappings = {
    "5.19.0-\d{2}-(generic|generic-64k|generic-lpae)" : "5.19.0-23",
    "5.19.0-\d{4}-(azure|gcp|ibm|kvm|oracle)" : "5.19.0-1010",
    "5.19.0-\d{4}-(lowlatency|lowlatency-64k)" : "5.19.0-1009",
    "5.19.0-\d{4}-(raspi|raspi-nolpae)" : "5.19.0-1006",
    "5.19.0-\d{4}-aws" : "5.19.0-1011"
  };
  var trimmed_kernel_release = ereg_replace(string:machine_kernel_release, pattern:"(-\D+)$", replace:'');
  foreach var kernel_regex (keys(kernel_mappings)) {
    if (preg(pattern:kernel_regex, string:machine_kernel_release)) {
      if (deb_ver_cmp(ver1:trimmed_kernel_release, ver2:kernel_mappings[kernel_regex]) < 0)
      {
        extra = extra + 'Running Kernel level of ' + trimmed_kernel_release + ' does not meet the minimum fixed level of ' + kernel_mappings[kernel_regex] + ' for this advisory.\n\n';
      }
      else
      {
        audit(AUDIT_PATCH_INSTALLED, 'Kernel package for USN-5700-1');
      }
    }
  }
}

if (get_one_kb_item('Host/ksplice/kernel-cves'))
{
  var cve_list = make_list('CVE-2022-2602', 'CVE-2022-41674', 'CVE-2022-42719', 'CVE-2022-42720', 'CVE-2022-42721', 'CVE-2022-42722');
  if (ksplice_cves_check(cve_list))
  {
    audit(AUDIT_PATCH_INSTALLED, 'KSplice hotfix for USN-5700-1');
  }
  else
  {
    extra = extra + ksplice_reporting_text();
  }
}
if (extra) {
  security_report_v4(
    port       : 0,
    severity   : SECURITY_HOLE,
    extra      : extra
  );
  exit(0);
}