Amazon Linux 2022 : (ALAS2022-2023-274)

#%NASL_MIN_LEVEL 80900
##
# (C) Tenable, Inc.
#
# The descriptive text and package checks in this plugin were
# extracted from Amazon Linux 2022 Security Advisory ALAS2022-2023-274.
##

include('compat.inc');

if (description)
{
  script_id(170594);
  script_version("1.3");
  script_set_attribute(attribute:"plugin_modification_date", value:"2023/09/06");

  script_cve_id("CVE-2022-42919", "CVE-2022-45061");
  script_xref(name:"IAVA", value:"2023-A-0061-S");

  script_name(english:"Amazon Linux 2022 :  (ALAS2022-2023-274)");

  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 ALAS2022-2023-274 advisory.

  - Python 3.9.x before 3.9.16 and 3.10.x before 3.10.9 on Linux allows local privilege escalation in a non-
    default configuration. The Python multiprocessing library, when used with the forkserver start method on
    Linux, allows pickles to be deserialized from any user in the same machine local network namespace, which
    in many system configurations means any user on the same machine. Pickles can execute arbitrary code.
    Thus, this allows for local user privilege escalation to the user that any forkserver process is running
    as. Setting multiprocessing.util.abstract_sockets_supported to False is a workaround. The forkserver start
    method for multiprocessing is not the default start method. This issue is Linux specific because only
    Linux supports abstract namespace sockets. CPython before 3.9 does not make use of Linux abstract
    namespace sockets by default. Support for users manually specifying an abstract namespace socket was added
    as a bugfix in 3.7.8 and 3.8.3, but users would need to make specific uncommon API calls in order to do
    that in CPython before 3.9. (CVE-2022-42919)

  - An issue was discovered in Python before 3.11.1. An unnecessary quadratic algorithm exists in one path
    when processing some inputs to the IDNA (RFC 3490) decoder, such that a crafted, unreasonably long name
    being presented to the decoder could lead to a CPU denial of service. Hostnames are often supplied by
    remote servers that could be controlled by a malicious actor; in such a scenario, they could trigger
    excessive CPU consumption on the client attempting to make use of an attacker-supplied supposed hostname.
    For example, the attack payload could be placed in the Location header of an HTTP response with status
    code 302. A fix is planned in 3.11.1, 3.10.9, 3.9.16, 3.8.16, and 3.7.16. (CVE-2022-45061)

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-2023-274.html");
  script_set_attribute(attribute:"see_also", value:"https://alas.aws.amazon.com/cve/html/CVE-2022-42919.html");
  script_set_attribute(attribute:"see_also", value:"https://alas.aws.amazon.com/cve/html/CVE-2022-45061.html");
  script_set_attribute(attribute:"solution", value:
"Run 'dnf update python3.10' to update your system.");
  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:POC/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:P/RL:O/RC:C");
  script_set_attribute(attribute:"cvss_score_source", value:"CVE-2022-42919");

  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:"2022/11/07");
  script_set_attribute(attribute:"patch_publication_date", value:"2023/01/20");
  script_set_attribute(attribute:"plugin_publication_date", value:"2023/01/25");

  script_set_attribute(attribute:"plugin_type", value:"local");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:amazon:linux:python3.10");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:amazon:linux:python3.10-debug");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:amazon:linux:python3.10-debuginfo");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:amazon:linux:python3.10-debugsource");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:amazon:linux:python3.10-devel");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:amazon:linux:python3.10-idle");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:amazon:linux:python3.10-libs");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:amazon:linux:python3.10-test");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:amazon:linux:python3.10-tkinter");
  script_set_attribute(attribute:"cpe", value:"cpe:/o:amazon:linux:2022");
  script_set_attribute(attribute:"generated_plugin", value:"current");
  script_set_attribute(attribute:"stig_severity", value:"I");
  script_end_attributes();

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

  script_copyright(english:"This script is Copyright (C) 2023 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':'python3.10-3.10.9-1.amzn2022.0.1', 'cpu':'aarch64', 'release':'AL-2022', 'rpm_spec_vers_cmp':TRUE},
    {'reference':'python3.10-3.10.9-1.amzn2022.0.1', 'cpu':'i686', 'release':'AL-2022', 'rpm_spec_vers_cmp':TRUE},
    {'reference':'python3.10-3.10.9-1.amzn2022.0.1', 'cpu':'x86_64', 'release':'AL-2022', 'rpm_spec_vers_cmp':TRUE},
    {'reference':'python3.10-debug-3.10.9-1.amzn2022.0.1', 'cpu':'aarch64', 'release':'AL-2022', 'rpm_spec_vers_cmp':TRUE},
    {'reference':'python3.10-debug-3.10.9-1.amzn2022.0.1', 'cpu':'i686', 'release':'AL-2022', 'rpm_spec_vers_cmp':TRUE},
    {'reference':'python3.10-debug-3.10.9-1.amzn2022.0.1', 'cpu':'x86_64', 'release':'AL-2022', 'rpm_spec_vers_cmp':TRUE},
    {'reference':'python3.10-debuginfo-3.10.9-1.amzn2022.0.1', 'cpu':'aarch64', 'release':'AL-2022', 'rpm_spec_vers_cmp':TRUE},
    {'reference':'python3.10-debuginfo-3.10.9-1.amzn2022.0.1', 'cpu':'i686', 'release':'AL-2022', 'rpm_spec_vers_cmp':TRUE},
    {'reference':'python3.10-debuginfo-3.10.9-1.amzn2022.0.1', 'cpu':'x86_64', 'release':'AL-2022', 'rpm_spec_vers_cmp':TRUE},
    {'reference':'python3.10-debugsource-3.10.9-1.amzn2022.0.1', 'cpu':'aarch64', 'release':'AL-2022', 'rpm_spec_vers_cmp':TRUE},
    {'reference':'python3.10-debugsource-3.10.9-1.amzn2022.0.1', 'cpu':'i686', 'release':'AL-2022', 'rpm_spec_vers_cmp':TRUE},
    {'reference':'python3.10-debugsource-3.10.9-1.amzn2022.0.1', 'cpu':'x86_64', 'release':'AL-2022', 'rpm_spec_vers_cmp':TRUE},
    {'reference':'python3.10-devel-3.10.9-1.amzn2022.0.1', 'cpu':'aarch64', 'release':'AL-2022', 'rpm_spec_vers_cmp':TRUE},
    {'reference':'python3.10-devel-3.10.9-1.amzn2022.0.1', 'cpu':'i686', 'release':'AL-2022', 'rpm_spec_vers_cmp':TRUE},
    {'reference':'python3.10-devel-3.10.9-1.amzn2022.0.1', 'cpu':'x86_64', 'release':'AL-2022', 'rpm_spec_vers_cmp':TRUE},
    {'reference':'python3.10-idle-3.10.9-1.amzn2022.0.1', 'cpu':'aarch64', 'release':'AL-2022', 'rpm_spec_vers_cmp':TRUE},
    {'reference':'python3.10-idle-3.10.9-1.amzn2022.0.1', 'cpu':'i686', 'release':'AL-2022', 'rpm_spec_vers_cmp':TRUE},
    {'reference':'python3.10-idle-3.10.9-1.amzn2022.0.1', 'cpu':'x86_64', 'release':'AL-2022', 'rpm_spec_vers_cmp':TRUE},
    {'reference':'python3.10-libs-3.10.9-1.amzn2022.0.1', 'cpu':'aarch64', 'release':'AL-2022', 'rpm_spec_vers_cmp':TRUE},
    {'reference':'python3.10-libs-3.10.9-1.amzn2022.0.1', 'cpu':'i686', 'release':'AL-2022', 'rpm_spec_vers_cmp':TRUE},
    {'reference':'python3.10-libs-3.10.9-1.amzn2022.0.1', 'cpu':'x86_64', 'release':'AL-2022', 'rpm_spec_vers_cmp':TRUE},
    {'reference':'python3.10-test-3.10.9-1.amzn2022.0.1', 'cpu':'aarch64', 'release':'AL-2022', 'rpm_spec_vers_cmp':TRUE},
    {'reference':'python3.10-test-3.10.9-1.amzn2022.0.1', 'cpu':'i686', 'release':'AL-2022', 'rpm_spec_vers_cmp':TRUE},
    {'reference':'python3.10-test-3.10.9-1.amzn2022.0.1', 'cpu':'x86_64', 'release':'AL-2022', 'rpm_spec_vers_cmp':TRUE},
    {'reference':'python3.10-tkinter-3.10.9-1.amzn2022.0.1', 'cpu':'aarch64', 'release':'AL-2022', 'rpm_spec_vers_cmp':TRUE},
    {'reference':'python3.10-tkinter-3.10.9-1.amzn2022.0.1', 'cpu':'i686', 'release':'AL-2022', 'rpm_spec_vers_cmp':TRUE},
    {'reference':'python3.10-tkinter-3.10.9-1.amzn2022.0.1', '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;
  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 (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_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, "python3.10 / python3.10-debug / python3.10-debuginfo / etc");
}