Rocky Linux 8 : kernel (RLSA-2022:1988)

##
# (C) Tenable, Inc.
#
# The package checks in this plugin were extracted from
# Rocky Linux Security Advisory RLSA-2022:1988.
##

include('compat.inc');

if (description)
{
  script_id(161344);
  script_version("1.4");
  script_set_attribute(attribute:"plugin_modification_date", value:"2023/11/07");

  script_cve_id(
    "CVE-2020-0404",
    "CVE-2020-13974",
    "CVE-2020-27820",
    "CVE-2020-4788",
    "CVE-2021-0941",
    "CVE-2021-20322",
    "CVE-2021-3612",
    "CVE-2021-3669",
    "CVE-2021-37159",
    "CVE-2021-3743",
    "CVE-2021-3744",
    "CVE-2021-3752",
    "CVE-2021-3759",
    "CVE-2021-3764",
    "CVE-2021-3772",
    "CVE-2021-3773",
    "CVE-2021-4002",
    "CVE-2021-4037",
    "CVE-2021-4083",
    "CVE-2021-4093",
    "CVE-2021-4157",
    "CVE-2021-41864",
    "CVE-2021-4197",
    "CVE-2021-4203",
    "CVE-2021-42739",
    "CVE-2021-43056",
    "CVE-2021-43389",
    "CVE-2021-43976",
    "CVE-2021-44733",
    "CVE-2021-45485",
    "CVE-2021-45486",
    "CVE-2022-0001",
    "CVE-2022-0002",
    "CVE-2022-0286",
    "CVE-2022-0322",
    "CVE-2022-1011",
    "CVE-2021-21781",
    "CVE-2021-26401",
    "CVE-2021-29154"
  );
  script_xref(name:"RLSA", value:"2022:1988");

  script_name(english:"Rocky Linux 8 : kernel (RLSA-2022:1988)");

  script_set_attribute(attribute:"synopsis", value:
"The remote Rocky Linux host is missing one or more security updates.");
  script_set_attribute(attribute:"description", value:
"The remote Rocky Linux 8 host has packages installed that are affected by multiple vulnerabilities as referenced in the
RLSA-2022:1988 advisory.

  - An out-of-bounds memory write flaw was found in the Linux kernel's joystick devices subsystem in versions
    before 5.9-rc1, in the way the user calls ioctl JSIOCSBTNMAP. This flaw allows a local user to crash the
    system or possibly escalate their privileges on the system. The highest threat from this vulnerability is
    to confidentiality, integrity, as well as system availability. (CVE-2021-3612)

  - A use-after-free flaw was found in the Linux kernel's Bluetooth subsystem in the way user calls connect to
    the socket and disconnect simultaneously due to a race condition. This flaw allows a user to crash the
    system or escalate their privileges. The highest threat from this vulnerability is to confidentiality,
    integrity, as well as system availability. (CVE-2021-3752)

  - A flaw was found in the Linux SCTP stack. A blind attacker may be able to kill an existing SCTP
    association through invalid chunks if the attacker knows the IP-addresses and port numbers being used and
    the attacker can send packets with spoofed IP addresses. (CVE-2021-3772)

  - A flaw in netfilter could allow a network-connected attacker to infer openvpn connection endpoint
    information for further use in traditional network attacks. (CVE-2021-3773)

  - A memory leak flaw in the Linux kernel's hugetlbfs memory usage was found in the way the user maps some
    regions of memory twice using shmget() which are aligned to PUD alignment with the fault of some of the
    memory pages. A local user could use this flaw to get unauthorized access to some data. (CVE-2021-4002)

  - An information disclosure vulnerability exists in the ARM SIGPAGE functionality of Linux Kernel v5.4.66
    and v5.4.54. The latest version (5.11-rc4) seems to still be vulnerable. A userland application can read
    the contents of the sigpage, which can leak kernel memory contents. An attacker can read a process's
    memory at a specific offset to trigger this vulnerability. This was fixed in kernel releases: 4.14.222
    4.19.177 5.4.99 5.10.17 5.11 (CVE-2021-21781)

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://errata.rockylinux.org/RLSA-2022:1988");
  script_set_attribute(attribute:"see_also", value:"https://bugzilla.redhat.com/show_bug.cgi?id=1888433");
  script_set_attribute(attribute:"see_also", value:"https://bugzilla.redhat.com/show_bug.cgi?id=1901726");
  script_set_attribute(attribute:"see_also", value:"https://bugzilla.redhat.com/show_bug.cgi?id=1919791");
  script_set_attribute(attribute:"see_also", value:"https://bugzilla.redhat.com/show_bug.cgi?id=1946684");
  script_set_attribute(attribute:"see_also", value:"https://bugzilla.redhat.com/show_bug.cgi?id=1951739");
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  script_set_attribute(attribute:"solution", value:
"Update the affected packages.");
  script_set_cvss_base_vector("CVSS2#AV:A/AC:M/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:N/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-2021-3752");
  script_set_attribute(attribute:"cvss3_score_source", value:"CVE-2021-3773");

  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:"2021/07/09");
  script_set_attribute(attribute:"patch_publication_date", value:"2022/05/18");
  script_set_attribute(attribute:"plugin_publication_date", value:"2022/05/18");

  script_set_attribute(attribute:"plugin_type", value:"local");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:rocky:linux:bpftool");
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  script_end_attributes();

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

  script_copyright(english:"This script is Copyright (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/local_checks_enabled", "Host/RockyLinux/release", "Host/RockyLinux/rpm-list", "Host/cpu");

  exit(0);
}


include('rpm.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/RockyLinux/release');
if (isnull(os_release) || 'Rocky Linux' >!< os_release) audit(AUDIT_OS_NOT, 'Rocky Linux');
var os_ver = pregmatch(pattern: "Rocky(?: Linux)? release ([0-9]+(\.[0-9]+)?)", string:os_release);
if (isnull(os_ver)) audit(AUDIT_UNKNOWN_APP_VER, 'Rocky Linux');
os_ver = os_ver[1];
if (! preg(pattern:"^8([^0-9]|$)", string:os_ver)) audit(AUDIT_OS_NOT, 'Rocky Linux 8.x', 'Rocky Linux ' + os_ver);

if (!get_kb_item('Host/RockyLinux/rpm-list')) 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, 'Rocky Linux', cpu);

if (get_one_kb_item('Host/ksplice/kernel-cves'))
{
  rm_kb_item(name:'Host/uptrack-uname-r');
  var cve_list = make_list('CVE-2020-0404', 'CVE-2020-4788', 'CVE-2020-13974', 'CVE-2020-27820', 'CVE-2021-0941', 'CVE-2021-3612', 'CVE-2021-3669', 'CVE-2021-3743', 'CVE-2021-3744', 'CVE-2021-3752', 'CVE-2021-3759', 'CVE-2021-3764', 'CVE-2021-3772', 'CVE-2021-3773', 'CVE-2021-4002', 'CVE-2021-4037', 'CVE-2021-4083', 'CVE-2021-4093', 'CVE-2021-4157', 'CVE-2021-4197', 'CVE-2021-4203', 'CVE-2021-20322', 'CVE-2021-21781', 'CVE-2021-26401', 'CVE-2021-29154', 'CVE-2021-37159', 'CVE-2021-41864', 'CVE-2021-42739', 'CVE-2021-43056', 'CVE-2021-43389', 'CVE-2021-43976', 'CVE-2021-44733', 'CVE-2021-45485', 'CVE-2021-45486', 'CVE-2022-0001', 'CVE-2022-0002', 'CVE-2022-0286', 'CVE-2022-0322', 'CVE-2022-1011');
  if (ksplice_cves_check(cve_list))
  {
    audit(AUDIT_PATCH_INSTALLED, 'KSplice hotfix for RLSA-2022:1988');
  }
  else
  {
    __rpm_report = ksplice_reporting_text();
  }
}

var pkgs = [
    {'reference':'bpftool-4.18.0-372.9.1.el8', 'cpu':'aarch64', 'release':'8', 'rpm_spec_vers_cmp':TRUE},
    {'reference':'bpftool-4.18.0-372.9.1.el8', 'cpu':'x86_64', 'release':'8', 'rpm_spec_vers_cmp':TRUE},
    {'reference':'bpftool-debuginfo-4.18.0-372.9.1.el8', 'cpu':'aarch64', 'release':'8', 'rpm_spec_vers_cmp':TRUE},
    {'reference':'bpftool-debuginfo-4.18.0-372.9.1.el8', 'cpu':'x86_64', 'release':'8', 'rpm_spec_vers_cmp':TRUE},
    {'reference':'kernel-4.18.0-372.9.1.el8', 'cpu':'aarch64', 'release':'8', 'rpm_spec_vers_cmp':TRUE},
    {'reference':'kernel-4.18.0-372.9.1.el8', 'cpu':'x86_64', 'release':'8', 'rpm_spec_vers_cmp':TRUE},
    {'reference':'kernel-abi-stablelists-4.18.0-372.9.1.el8', 'release':'8', 'rpm_spec_vers_cmp':TRUE},
    {'reference':'kernel-core-4.18.0-372.9.1.el8', 'cpu':'aarch64', 'release':'8', 'rpm_spec_vers_cmp':TRUE},
    {'reference':'kernel-core-4.18.0-372.9.1.el8', 'cpu':'x86_64', 'release':'8', 'rpm_spec_vers_cmp':TRUE},
    {'reference':'kernel-cross-headers-4.18.0-372.9.1.el8', 'cpu':'aarch64', 'release':'8', 'rpm_spec_vers_cmp':TRUE},
    {'reference':'kernel-cross-headers-4.18.0-372.9.1.el8', 'cpu':'x86_64', 'release':'8', 'rpm_spec_vers_cmp':TRUE},
    {'reference':'kernel-debug-4.18.0-372.9.1.el8', 'cpu':'aarch64', 'release':'8', 'rpm_spec_vers_cmp':TRUE},
    {'reference':'kernel-debug-4.18.0-372.9.1.el8', 'cpu':'x86_64', 'release':'8', 'rpm_spec_vers_cmp':TRUE},
    {'reference':'kernel-debug-core-4.18.0-372.9.1.el8', 'cpu':'aarch64', 'release':'8', 'rpm_spec_vers_cmp':TRUE},
    {'reference':'kernel-debug-core-4.18.0-372.9.1.el8', 'cpu':'x86_64', 'release':'8', 'rpm_spec_vers_cmp':TRUE},
    {'reference':'kernel-debug-debuginfo-4.18.0-372.9.1.el8', 'cpu':'aarch64', 'release':'8', 'rpm_spec_vers_cmp':TRUE},
    {'reference':'kernel-debug-debuginfo-4.18.0-372.9.1.el8', 'cpu':'x86_64', 'release':'8', 'rpm_spec_vers_cmp':TRUE},
    {'reference':'kernel-debug-devel-4.18.0-372.9.1.el8', 'cpu':'aarch64', 'release':'8', 'rpm_spec_vers_cmp':TRUE},
    {'reference':'kernel-debug-devel-4.18.0-372.9.1.el8', 'cpu':'x86_64', 'release':'8', 'rpm_spec_vers_cmp':TRUE},
    {'reference':'kernel-debug-modules-4.18.0-372.9.1.el8', 'cpu':'aarch64', 'release':'8', 'rpm_spec_vers_cmp':TRUE},
    {'reference':'kernel-debug-modules-4.18.0-372.9.1.el8', 'cpu':'x86_64', 'release':'8', 'rpm_spec_vers_cmp':TRUE},
    {'reference':'kernel-debug-modules-extra-4.18.0-372.9.1.el8', 'cpu':'aarch64', 'release':'8', 'rpm_spec_vers_cmp':TRUE},
    {'reference':'kernel-debug-modules-extra-4.18.0-372.9.1.el8', 'cpu':'x86_64', 'release':'8', 'rpm_spec_vers_cmp':TRUE},
    {'reference':'kernel-debuginfo-4.18.0-372.9.1.el8', 'cpu':'aarch64', 'release':'8', 'rpm_spec_vers_cmp':TRUE},
    {'reference':'kernel-debuginfo-4.18.0-372.9.1.el8', 'cpu':'x86_64', 'release':'8', 'rpm_spec_vers_cmp':TRUE},
    {'reference':'kernel-debuginfo-common-aarch64-4.18.0-372.9.1.el8', 'cpu':'aarch64', 'release':'8', 'rpm_spec_vers_cmp':TRUE},
    {'reference':'kernel-debuginfo-common-x86_64-4.18.0-372.9.1.el8', 'cpu':'x86_64', 'release':'8', 'rpm_spec_vers_cmp':TRUE},
    {'reference':'kernel-devel-4.18.0-372.9.1.el8', 'cpu':'aarch64', 'release':'8', 'rpm_spec_vers_cmp':TRUE},
    {'reference':'kernel-devel-4.18.0-372.9.1.el8', 'cpu':'x86_64', 'release':'8', 'rpm_spec_vers_cmp':TRUE},
    {'reference':'kernel-headers-4.18.0-372.9.1.el8', 'cpu':'aarch64', 'release':'8', 'rpm_spec_vers_cmp':TRUE},
    {'reference':'kernel-headers-4.18.0-372.9.1.el8', 'cpu':'x86_64', 'release':'8', 'rpm_spec_vers_cmp':TRUE},
    {'reference':'kernel-modules-4.18.0-372.9.1.el8', 'cpu':'aarch64', 'release':'8', 'rpm_spec_vers_cmp':TRUE},
    {'reference':'kernel-modules-4.18.0-372.9.1.el8', 'cpu':'x86_64', 'release':'8', 'rpm_spec_vers_cmp':TRUE},
    {'reference':'kernel-modules-extra-4.18.0-372.9.1.el8', 'cpu':'aarch64', 'release':'8', 'rpm_spec_vers_cmp':TRUE},
    {'reference':'kernel-modules-extra-4.18.0-372.9.1.el8', 'cpu':'x86_64', 'release':'8', 'rpm_spec_vers_cmp':TRUE},
    {'reference':'kernel-tools-4.18.0-372.9.1.el8', 'cpu':'aarch64', 'release':'8', 'rpm_spec_vers_cmp':TRUE},
    {'reference':'kernel-tools-4.18.0-372.9.1.el8', 'cpu':'x86_64', 'release':'8', 'rpm_spec_vers_cmp':TRUE},
    {'reference':'kernel-tools-debuginfo-4.18.0-372.9.1.el8', 'cpu':'aarch64', 'release':'8', 'rpm_spec_vers_cmp':TRUE},
    {'reference':'kernel-tools-debuginfo-4.18.0-372.9.1.el8', 'cpu':'x86_64', 'release':'8', 'rpm_spec_vers_cmp':TRUE},
    {'reference':'kernel-tools-libs-4.18.0-372.9.1.el8', 'cpu':'aarch64', 'release':'8', 'rpm_spec_vers_cmp':TRUE},
    {'reference':'kernel-tools-libs-4.18.0-372.9.1.el8', 'cpu':'x86_64', 'release':'8', 'rpm_spec_vers_cmp':TRUE},
    {'reference':'kernel-tools-libs-devel-4.18.0-372.9.1.el8', 'cpu':'aarch64', 'release':'8', 'rpm_spec_vers_cmp':TRUE},
    {'reference':'kernel-tools-libs-devel-4.18.0-372.9.1.el8', 'cpu':'x86_64', 'release':'8', 'rpm_spec_vers_cmp':TRUE},
    {'reference':'perf-4.18.0-372.9.1.el8', 'cpu':'aarch64', 'release':'8', 'rpm_spec_vers_cmp':TRUE},
    {'reference':'perf-4.18.0-372.9.1.el8', 'cpu':'x86_64', 'release':'8', 'rpm_spec_vers_cmp':TRUE},
    {'reference':'perf-debuginfo-4.18.0-372.9.1.el8', 'cpu':'aarch64', 'release':'8', 'rpm_spec_vers_cmp':TRUE},
    {'reference':'perf-debuginfo-4.18.0-372.9.1.el8', 'cpu':'x86_64', 'release':'8', 'rpm_spec_vers_cmp':TRUE},
    {'reference':'python3-perf-4.18.0-372.9.1.el8', 'cpu':'aarch64', 'release':'8', 'rpm_spec_vers_cmp':TRUE},
    {'reference':'python3-perf-4.18.0-372.9.1.el8', 'cpu':'x86_64', 'release':'8', 'rpm_spec_vers_cmp':TRUE},
    {'reference':'python3-perf-debuginfo-4.18.0-372.9.1.el8', 'cpu':'aarch64', 'release':'8', 'rpm_spec_vers_cmp':TRUE},
    {'reference':'python3-perf-debuginfo-4.18.0-372.9.1.el8', 'cpu':'x86_64', 'release':'8', 'rpm_spec_vers_cmp':TRUE}
];

var flag = 0;
foreach var package_array ( pkgs ) {
  var reference = NULL;
  var _release = NULL;
  var sp = NULL;
  var _cpu = NULL;
  var el_string = NULL;
  var rpm_spec_vers_cmp = NULL;
  var epoch = NULL;
  var allowmaj = NULL;
  var exists_check = NULL;
  if (!empty_or_null(package_array['reference'])) reference = package_array['reference'];
  if (!empty_or_null(package_array['release'])) _release = 'Rocky-' + package_array['release'];
  if (!empty_or_null(package_array['sp'])) sp = package_array['sp'];
  if (!empty_or_null(package_array['cpu'])) _cpu = package_array['cpu'];
  if (!empty_or_null(package_array['el_string'])) el_string = package_array['el_string'];
  if (!empty_or_null(package_array['rpm_spec_vers_cmp'])) rpm_spec_vers_cmp = package_array['rpm_spec_vers_cmp'];
  if (!empty_or_null(package_array['epoch'])) epoch = package_array['epoch'];
  if (!empty_or_null(package_array['allowmaj'])) allowmaj = package_array['allowmaj'];
  if (!empty_or_null(package_array['exists_check'])) exists_check = package_array['exists_check'];
  if (reference && _release && (!exists_check || rpm_exists(release:_release, rpm:exists_check))) {
    if (rpm_check(release:_release, sp:sp, cpu:_cpu, reference:reference, epoch:epoch, el_string:el_string, rpm_spec_vers_cmp:rpm_spec_vers_cmp, allowmaj:allowmaj)) flag++;
  }
}

if (flag)
{
  security_report_v4(
      port       : 0,
      severity   : SECURITY_HOLE,
      extra      : rpm_report_get()
  );
  exit(0);
}
else
{
  var tested = pkg_tests_get();
  if (tested) audit(AUDIT_PACKAGE_NOT_AFFECTED, tested);
  else audit(AUDIT_PACKAGE_NOT_INSTALLED, 'bpftool / bpftool-debuginfo / kernel / kernel-abi-stablelists / etc');
}