Amazon Linux 2022 : lua, lua-devel, lua-libs (ALAS2022-2022-031)

#%NASL_MIN_LEVEL 80900
##
# (C) Tenable, Inc.
#
# The descriptive text and package checks in this plugin were
# extracted from Amazon Linux 2022 Security Advisory ALAS2022-2022-031.
##

include('compat.inc');

if (description)
{
  script_id(212458);
  script_version("1.2");
  script_set_attribute(attribute:"plugin_modification_date", value:"2024/12/12");

  script_cve_id("CVE-2021-43519", "CVE-2021-44647");

  script_name(english:"Amazon Linux 2022 : lua, lua-devel, lua-libs (ALAS2022-2022-031)");

  script_set_attribute(attribute:"synopsis", value:
"The remote Amazon Linux 2022 host is missing a security update.");
  script_set_attribute(attribute:"description", value:
"It is, therefore, affected by multiple vulnerabilities as referenced in the ALAS2022-2022-031 advisory.

    A stack overflow issue was discovered in Lua in the lua_resume() function of ldo.c. This flaw allows a
    local attacker to pass a specially crafted file to the Lua Interpreter, causing a crash that leads to a
    denial of service. (CVE-2021-43519)

    A flaw was found in Lua. An SEGV crash in the funcnamefromcode() function in ldebug.c during error
    handling occurs in __close metamethods. This flaw allows an attacker to cause a denial of service.
    (CVE-2021-44647)

Tenable has extracted the preceding description block directly from the tested product 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://alas.aws.amazon.com/AL2022/ALAS-2022-031.html");
  script_set_attribute(attribute:"see_also", value:"https://alas.aws.amazon.com/cve/html/CVE-2021-43519.html");
  script_set_attribute(attribute:"see_also", value:"https://alas.aws.amazon.com/cve/html/CVE-2021-44647.html");
  script_set_attribute(attribute:"solution", value:
"Run 'dnf update --releasever=2022.0.20220222 lua' to update your system.");
  script_set_cvss_base_vector("CVSS2#AV:N/AC:M/Au:N/C:N/I:N/A:P");
  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:N/I:N/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-2021-43519");
  script_set_attribute(attribute:"cvss3_score_source", value:"CVE-2021-44647");

  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:"2021/11/09");
  script_set_attribute(attribute:"patch_publication_date", value:"2022/02/22");
  script_set_attribute(attribute:"plugin_publication_date", value:"2024/12/11");

  script_set_attribute(attribute:"plugin_type", value:"local");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:amazon:linux:lua");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:amazon:linux:lua-debuginfo");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:amazon:linux:lua-debugsource");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:amazon:linux:lua-devel");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:amazon:linux:lua-libs");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:amazon:linux:lua-libs-debuginfo");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:amazon:linux:lua-static");
  script_set_attribute(attribute:"cpe", value:"cpe:/o:amazon:linux:2022");
  script_set_attribute(attribute:"generated_plugin", value:"current");
  script_end_attributes();

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

  script_copyright(english:"This script is Copyright (C) 2024 and is owned by Tenable, Inc. or an Affiliate thereof.");

  script_dependencies("ssh_get_info.nasl");
  script_require_keys("Host/local_checks_enabled", "Host/AmazonLinux/release", "Host/AmazonLinux/rpm-list");

  exit(0);
}

include("rpm.inc");

if (!get_kb_item("Host/local_checks_enabled")) audit(AUDIT_LOCAL_CHECKS_NOT_ENABLED);

var alas_release = get_kb_item("Host/AmazonLinux/release");
if (isnull(alas_release) || !strlen(alas_release)) audit(AUDIT_OS_NOT, "Amazon Linux");
var os_ver = pregmatch(pattern: "^AL(A|\d+|-\d+)", string:alas_release);
if (isnull(os_ver)) audit(AUDIT_UNKNOWN_APP_VER, "Amazon Linux");
os_ver = os_ver[1];
if (os_ver != "-2022")
{
  if (os_ver == 'A') os_ver = 'AMI';
  audit(AUDIT_OS_NOT, "Amazon Linux 2022", "Amazon Linux " + os_ver);
}

if (!get_kb_item("Host/AmazonLinux/rpm-list")) audit(AUDIT_PACKAGE_LIST_MISSING);

var pkgs = [
    {'reference':'lua-5.4.4-1.amzn2022', 'cpu':'aarch64', 'release':'AL-2022', 'rpm_spec_vers_cmp':TRUE},
    {'reference':'lua-5.4.4-1.amzn2022', 'cpu':'i686', 'release':'AL-2022', 'rpm_spec_vers_cmp':TRUE},
    {'reference':'lua-5.4.4-1.amzn2022', 'cpu':'x86_64', 'release':'AL-2022', 'rpm_spec_vers_cmp':TRUE},
    {'reference':'lua-debuginfo-5.4.4-1.amzn2022', 'cpu':'aarch64', 'release':'AL-2022', 'rpm_spec_vers_cmp':TRUE},
    {'reference':'lua-debuginfo-5.4.4-1.amzn2022', 'cpu':'i686', 'release':'AL-2022', 'rpm_spec_vers_cmp':TRUE},
    {'reference':'lua-debuginfo-5.4.4-1.amzn2022', 'cpu':'x86_64', 'release':'AL-2022', 'rpm_spec_vers_cmp':TRUE},
    {'reference':'lua-debugsource-5.4.4-1.amzn2022', 'cpu':'aarch64', 'release':'AL-2022', 'rpm_spec_vers_cmp':TRUE},
    {'reference':'lua-debugsource-5.4.4-1.amzn2022', 'cpu':'i686', 'release':'AL-2022', 'rpm_spec_vers_cmp':TRUE},
    {'reference':'lua-debugsource-5.4.4-1.amzn2022', 'cpu':'x86_64', 'release':'AL-2022', 'rpm_spec_vers_cmp':TRUE},
    {'reference':'lua-devel-5.4.4-1.amzn2022', 'cpu':'aarch64', 'release':'AL-2022', 'rpm_spec_vers_cmp':TRUE},
    {'reference':'lua-devel-5.4.4-1.amzn2022', 'cpu':'i686', 'release':'AL-2022', 'rpm_spec_vers_cmp':TRUE},
    {'reference':'lua-devel-5.4.4-1.amzn2022', 'cpu':'x86_64', 'release':'AL-2022', 'rpm_spec_vers_cmp':TRUE},
    {'reference':'lua-libs-5.4.4-1.amzn2022', 'cpu':'aarch64', 'release':'AL-2022', 'rpm_spec_vers_cmp':TRUE},
    {'reference':'lua-libs-5.4.4-1.amzn2022', 'cpu':'i686', 'release':'AL-2022', 'rpm_spec_vers_cmp':TRUE},
    {'reference':'lua-libs-5.4.4-1.amzn2022', 'cpu':'x86_64', 'release':'AL-2022', 'rpm_spec_vers_cmp':TRUE},
    {'reference':'lua-libs-debuginfo-5.4.4-1.amzn2022', 'cpu':'aarch64', 'release':'AL-2022', 'rpm_spec_vers_cmp':TRUE},
    {'reference':'lua-libs-debuginfo-5.4.4-1.amzn2022', 'cpu':'i686', 'release':'AL-2022', 'rpm_spec_vers_cmp':TRUE},
    {'reference':'lua-libs-debuginfo-5.4.4-1.amzn2022', 'cpu':'x86_64', 'release':'AL-2022', 'rpm_spec_vers_cmp':TRUE},
    {'reference':'lua-static-5.4.4-1.amzn2022', 'cpu':'aarch64', 'release':'AL-2022', 'rpm_spec_vers_cmp':TRUE},
    {'reference':'lua-static-5.4.4-1.amzn2022', 'cpu':'i686', 'release':'AL-2022', 'rpm_spec_vers_cmp':TRUE},
    {'reference':'lua-static-5.4.4-1.amzn2022', 'cpu':'x86_64', 'release':'AL-2022', '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;
  var cves = NULL;
  if (!empty_or_null(package_array['reference'])) reference = package_array['reference'];
  if (!empty_or_null(package_array['release'])) _release = 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 (!empty_or_null(package_array['cves'])) cves = package_array['cves'];
  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, cves:cves)) flag++;
  }
}

if (flag)
{
  security_report_v4(
      port       : 0,
      severity   : SECURITY_WARNING,
      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, "lua / lua-debuginfo / lua-debugsource / etc");
}