SUSE SLED15 / SLES15 / openSUSE 15 Security Update : python-PyJWT (SUSE-SU-2023:0794-1)

#%NASL_MIN_LEVEL 80900
##
# (C) Tenable, Inc.
#
# The package checks in this plugin were extracted from
# SUSE update advisory SUSE-SU-2023:0794-1. The text itself
# is copyright (C) SUSE.
##

include('deprecated_nasl_level.inc');
include('compat.inc');

if (description)
{
  script_id(172677);
  script_version("1.2");
  script_set_attribute(attribute:"plugin_modification_date", value:"2023/07/14");

  script_cve_id("CVE-2022-29217");
  script_xref(name:"SuSE", value:"SUSE-SU-2023:0794-1");

  script_name(english:"SUSE SLED15 / SLES15 / openSUSE 15 Security Update : python-PyJWT (SUSE-SU-2023:0794-1)");

  script_set_attribute(attribute:"synopsis", value:
"The remote SUSE host is missing a security update.");
  script_set_attribute(attribute:"description", value:
"The remote SUSE Linux SLED15 / SLED_SAP15 / SLES15 / SLES_SAP15 / openSUSE 15 host has a package installed that is
affected by a vulnerability as referenced in the SUSE-SU-2023:0794-1 advisory.

  - PyJWT is a Python implementation of RFC 7519. PyJWT supports multiple different JWT signing algorithms.
    With JWT, an attacker submitting the JWT token can choose the used signing algorithm. The PyJWT library
    requires that the application chooses what algorithms are supported. The application can specify
    `jwt.algorithms.get_default_algorithms()` to get support for all algorithms, or specify a single
    algorithm. The issue is not that big as `algorithms=jwt.algorithms.get_default_algorithms()` has to be
    used. Users should upgrade to v2.4.0 to receive a patch for this issue. As a workaround, always be
    explicit with the algorithms that are accepted and expected when decoding. (CVE-2022-29217)

Note that Nessus has not tested for this issue but has instead relied only on the application's self-reported version
number.");
  script_set_attribute(attribute:"see_also", value:"https://bugzilla.suse.com/1176785");
  script_set_attribute(attribute:"see_also", value:"https://bugzilla.suse.com/1199282");
  script_set_attribute(attribute:"see_also", value:"https://bugzilla.suse.com/1199756");
  script_set_attribute(attribute:"see_also", value:"https://www.suse.com/security/cve/CVE-2022-29217");
  # https://lists.suse.com/pipermail/sle-security-updates/2023-March/014081.html
  script_set_attribute(attribute:"see_also", value:"http://www.nessus.org/u?be8bd0b1");
  script_set_attribute(attribute:"solution", value:
"Update the affected python3-PyJWT package.");
  script_set_cvss_base_vector("CVSS2#AV:N/AC:L/Au:N/C:N/I:P/A:N");
  script_set_cvss_temporal_vector("CVSS2#E:U/RL:OF/RC:C");
  script_set_cvss3_base_vector("CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:H/A:N");
  script_set_cvss3_temporal_vector("CVSS:3.0/E:U/RL:O/RC:C");
  script_set_attribute(attribute:"cvss_score_source", value:"CVE-2022-29217");

  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:"2022/05/12");
  script_set_attribute(attribute:"patch_publication_date", value:"2023/03/17");
  script_set_attribute(attribute:"plugin_publication_date", value:"2023/03/18");

  script_set_attribute(attribute:"plugin_type", value:"local");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:novell:suse_linux:python3-PyJWT");
  script_set_attribute(attribute:"cpe", value:"cpe:/o:novell:suse_linux:15");
  script_set_attribute(attribute:"generated_plugin", value:"current");
  script_end_attributes();

  script_category(ACT_GATHER_INFO);
  script_family(english:"SuSE 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/cpu", "Host/SuSE/release", "Host/SuSE/rpm-list");

  exit(0);
}


include('rpm.inc');

if (!get_kb_item('Host/local_checks_enabled')) audit(AUDIT_LOCAL_CHECKS_NOT_ENABLED);
var os_release = get_kb_item("Host/SuSE/release");
if (isnull(os_release) || os_release !~ "^(SLED|SLES|SUSE)") audit(AUDIT_OS_NOT, "SUSE / openSUSE");
var os_ver = pregmatch(pattern: "^(SLE(S|D)(?:_SAP)?\d+|SUSE([\d.]+))", string:os_release);
if (isnull(os_ver)) audit(AUDIT_UNKNOWN_APP_VER, 'SUSE / openSUSE');
os_ver = os_ver[1];
if (! preg(pattern:"^(SLED15|SLED_SAP15|SLES15|SLES_SAP15|SUSE15\.4)$", string:os_ver)) audit(AUDIT_OS_NOT, 'SUSE SLED15 / SLED_SAP15 / SLES15 / SLES_SAP15 / openSUSE 15', 'SUSE / openSUSE (' + os_ver + ')');

if (!get_kb_item("Host/SuSE/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, 'SUSE / openSUSE (' + os_ver + ')', cpu);

var service_pack = get_kb_item("Host/SuSE/patchlevel");
if (isnull(service_pack)) service_pack = "0";
if (os_ver == "SLED15" && (! preg(pattern:"^(4)$", string:service_pack))) audit(AUDIT_OS_NOT, "SLED15 SP4", os_ver + " SP" + service_pack);
if (os_ver == "SLED_SAP15" && (! preg(pattern:"^(4)$", string:service_pack))) audit(AUDIT_OS_NOT, "SLED_SAP15 SP4", os_ver + " SP" + service_pack);
if (os_ver == "SLES15" && (! preg(pattern:"^(2|3|4)$", string:service_pack))) audit(AUDIT_OS_NOT, "SLES15 SP2/3/4", os_ver + " SP" + service_pack);
if (os_ver == "SLES_SAP15" && (! preg(pattern:"^(2|3|4)$", string:service_pack))) audit(AUDIT_OS_NOT, "SLES_SAP15 SP2/3/4", os_ver + " SP" + service_pack);

var pkgs = [
    {'reference':'python3-PyJWT-2.4.0-150200.3.6.2', 'sp':'2', 'release':'SLES_SAP15', 'rpm_spec_vers_cmp':TRUE, 'exists_check':['SLES_SAP-release-15.2']},
    {'reference':'python3-PyJWT-2.4.0-150200.3.6.2', 'sp':'3', 'release':'SLES_SAP15', 'rpm_spec_vers_cmp':TRUE, 'exists_check':['SLES_SAP-release-15.3']},
    {'reference':'python3-PyJWT-2.4.0-150200.3.6.2', 'sp':'4', 'release':'SLED_SAP15', 'rpm_spec_vers_cmp':TRUE, 'exists_check':['SLES_SAP-release-15.4']},
    {'reference':'python3-PyJWT-2.4.0-150200.3.6.2', 'sp':'4', 'release':'SLES_SAP15', 'rpm_spec_vers_cmp':TRUE, 'exists_check':['SLES_SAP-release-15.4']},
    {'reference':'python3-PyJWT-2.4.0-150200.3.6.2', 'sp':'3', 'release':'SLES15', 'rpm_spec_vers_cmp':TRUE, 'exists_check':['SLE_HPC-ESPOS-release-3', 'SLE_RT-release-15.3']},
    {'reference':'python3-PyJWT-2.4.0-150200.3.6.2', 'sp':'2', 'release':'SLES15', 'rpm_spec_vers_cmp':TRUE, 'exists_check':['SLE_HPC-LTSS-release-15.2', 'sles-ltss-release-15.2']},
    {'reference':'python3-PyJWT-2.4.0-150200.3.6.2', 'sp':'3', 'release':'SLES15', 'rpm_spec_vers_cmp':TRUE, 'exists_check':['SLE_HPC-LTSS-release-15.3', 'sles-ltss-release-15.3']},
    {'reference':'python3-PyJWT-2.4.0-150200.3.6.2', 'sp':'4', 'release':'SLED15', 'rpm_spec_vers_cmp':TRUE, 'exists_check':['SLE_HPC-release-15.4', 'sle-module-basesystem-release-15.4', 'sled-release-15.4', 'sles-release-15.4']},
    {'reference':'python3-PyJWT-2.4.0-150200.3.6.2', 'sp':'4', 'release':'SLES15', 'rpm_spec_vers_cmp':TRUE, 'exists_check':['SLE_HPC-release-15.4', 'sle-module-basesystem-release-15.4', 'sled-release-15.4', 'sles-release-15.4']},
    {'reference':'python3-PyJWT-2.4.0-150200.3.6.2', 'release':'SUSE15.4', 'rpm_spec_vers_cmp':TRUE, 'exists_check':['openSUSE-release-15.4']}
];

var ltss_caveat_required = FALSE;
var flag = 0;
foreach var package_array ( pkgs ) {
  var reference = NULL;
  var _release = NULL;
  var sp = NULL;
  var _cpu = NULL;
  var exists_check = NULL;
  var rpm_spec_vers_cmp = 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['exists_check'])) exists_check = package_array['exists_check'];
  if (!empty_or_null(package_array['rpm_spec_vers_cmp'])) rpm_spec_vers_cmp = package_array['rpm_spec_vers_cmp'];
  if (reference && _release) {
    if (exists_check) {
      var check_flag = 0;
      foreach var check (exists_check) {
        if (!rpm_exists(release:_release, rpm:check)) continue;
        if ('ltss' >< tolower(check)) ltss_caveat_required = TRUE;
        check_flag++;
      }
      if (!check_flag) continue;
    }
    if (rpm_check(release:_release, sp:sp, cpu:_cpu, reference:reference, rpm_spec_vers_cmp:rpm_spec_vers_cmp)) flag++;
  }
}

if (flag)
{
  var ltss_plugin_caveat = NULL;
  if(ltss_caveat_required) ltss_plugin_caveat = '\n' +
    'NOTE: This vulnerability check contains fixes that apply to\n' +
    'packages only available in SUSE Enterprise Linux Server LTSS\n' +
    'repositories. Access to these package security updates require\n' +
    'a paid SUSE LTSS subscription.\n';
  security_report_v4(
      port       : 0,
      severity   : SECURITY_WARNING,
      extra      : rpm_report_get() + ltss_plugin_caveat
  );
  exit(0);
}
else
{
  var tested = pkg_tests_get();
  if (tested) audit(AUDIT_PACKAGE_NOT_AFFECTED, tested);
  else audit(AUDIT_PACKAGE_NOT_INSTALLED, 'python3-PyJWT');
}