Ubuntu 22.10 : Linux kernel (Azure) vulnerabilities (USN-5754-2)

#%NASL_MIN_LEVEL 80900
##
# (C) Tenable, Inc.
#
# The descriptive text and package checks in this plugin were
# extracted from Ubuntu Security Notice USN-5754-2. 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(168635);
  script_version("1.4");
  script_set_attribute(attribute:"plugin_modification_date", value:"2023/02/07");

  script_cve_id(
    "CVE-2022-3524",
    "CVE-2022-3564",
    "CVE-2022-3565",
    "CVE-2022-3566",
    "CVE-2022-3567",
    "CVE-2022-3594",
    "CVE-2022-3621",
    "CVE-2022-43945"
  );
  script_xref(name:"USN", value:"5754-2");

  script_name(english:"Ubuntu 22.10 : Linux kernel (Azure) vulnerabilities (USN-5754-2)");

  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-5754-2 advisory.

  - A vulnerability was found in Linux Kernel. It has been declared as problematic. Affected by this
    vulnerability is the function ipv6_renew_options of the component IPv6 Handler. The manipulation leads to
    memory leak. The attack can be launched remotely. It is recommended to apply a patch to fix this issue.
    The identifier VDB-211021 was assigned to this vulnerability. (CVE-2022-3524)

  - A vulnerability classified as critical was found in Linux Kernel. Affected by this vulnerability is the
    function l2cap_reassemble_sdu of the file net/bluetooth/l2cap_core.c of the component Bluetooth. The
    manipulation leads to use after free. It is recommended to apply a patch to fix this issue. The associated
    identifier of this vulnerability is VDB-211087. (CVE-2022-3564)

  - A vulnerability, which was classified as critical, has been found in Linux Kernel. Affected by this issue
    is the function del_timer of the file drivers/isdn/mISDN/l1oip_core.c of the component Bluetooth. The
    manipulation leads to use after free. It is recommended to apply a patch to fix this issue. The identifier
    of this vulnerability is VDB-211088. (CVE-2022-3565)

  - A vulnerability, which was classified as problematic, was found in Linux Kernel. This affects the function
    tcp_getsockopt/tcp_setsockopt of the component TCP Handler. The manipulation leads to race condition. It
    is recommended to apply a patch to fix this issue. The identifier VDB-211089 was assigned to this
    vulnerability. (CVE-2022-3566)

  - A vulnerability has been found in Linux Kernel and classified as problematic. This vulnerability affects
    the function inet6_stream_ops/inet6_dgram_ops of the component IPv6 Handler. The manipulation leads to
    race condition. It is recommended to apply a patch to fix this issue. VDB-211090 is the identifier
    assigned to this vulnerability. (CVE-2022-3567)

  - A vulnerability was found in Linux Kernel. It has been declared as problematic. Affected by this
    vulnerability is the function intr_callback of the file drivers/net/usb/r8152.c of the component BPF. The
    manipulation leads to logging of excessive data. The attack can be launched remotely. It is recommended to
    apply a patch to fix this issue. The associated identifier of this vulnerability is VDB-211363.
    (CVE-2022-3594)

  - A vulnerability was found in Linux Kernel. It has been classified as problematic. Affected is the function
    nilfs_bmap_lookup_at_level of the file fs/nilfs2/inode.c of the component nilfs2. The manipulation leads
    to null pointer dereference. It is possible to launch the attack remotely. It is recommended to apply a
    patch to fix this issue. The identifier of this vulnerability is VDB-211920. (CVE-2022-3621)

  - The Linux kernel NFSD implementation prior to versions 5.19.17 and 6.0.2 are vulnerable to buffer
    overflow. NFSD tracks the number of pages held by each NFSD thread by combining the receive and send
    buffers of a remote procedure call (RPC) into a single array of pages. A client can force the send buffer
    to shrink by sending an RPC message over TCP with garbage data added at the end of the message. The RPC
    message with garbage data is still correctly formed according to the specification and is passed forward
    to handlers. Vulnerable code in NFSD is not expecting the oversized request and writes beyond the
    allocated buffer space. CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H (CVE-2022-43945)

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-5754-2");
  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: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-2022-3565");

  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:"2022/10/16");
  script_set_attribute(attribute:"patch_publication_date", value:"2022/12/12");
  script_set_attribute(attribute:"plugin_publication_date", value:"2022/12/12");

  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-5.19.0-1013-azure");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:canonical:ubuntu_linux:linux-image-azure");
  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) 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{4}-azure)$", string:machine_kernel_release)) audit(AUDIT_INST_VER_NOT_VULN, 'kernel ' + machine_kernel_release);
  var extra = '';
  var kernel_mappings = {
    "5.19.0-\d{4}-azure" : "5.19.0-1013"
  };
  var trimmed_kernel_release = ereg_replace(string:machine_kernel_release, pattern:"(-\D+)$", 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-5754-2');
      }
    }
  }
}

if (get_one_kb_item('Host/ksplice/kernel-cves'))
{
  var cve_list = make_list('CVE-2022-3524', 'CVE-2022-3564', 'CVE-2022-3565', 'CVE-2022-3566', 'CVE-2022-3567', 'CVE-2022-3594', 'CVE-2022-3621', 'CVE-2022-43945');
  if (ksplice_cves_check(cve_list))
  {
    audit(AUDIT_PATCH_INSTALLED, 'KSplice hotfix for USN-5754-2');
  }
  else
  {
    extra = extra + ksplice_reporting_text();
  }
}
if (extra) {
  security_report_v4(
    port       : 0,
    severity   : SECURITY_WARNING,
    extra      : extra
  );
  exit(0);
}