Rocky Linux 8 : mod_auth_openidc:2.3 (RLSA-2023:4418)

#%NASL_MIN_LEVEL 80900
##
# (C) Tenable, Inc.
#
# The package checks in this plugin were extracted from
# Rocky Linux Security Advisory RLSA-2023:4418.
##

include('compat.inc');

if (description)
{
  script_id(179449);
  script_version("1.3");
  script_set_attribute(attribute:"plugin_modification_date", value:"2023/11/06");

  script_cve_id("CVE-2023-37464");
  script_xref(name:"RLSA", value:"2023:4418");

  script_name(english:"Rocky Linux 8 : mod_auth_openidc:2.3 (RLSA-2023:4418)");

  script_set_attribute(attribute:"synopsis", value:
"The remote Rocky Linux host is missing a security update.");
  script_set_attribute(attribute:"description", value:
"The remote Rocky Linux 8 host has packages installed that are affected by a vulnerability as referenced in the
RLSA-2023:4418 advisory.

  - OpenIDC/cjose is a C library implementing the Javascript Object Signing and Encryption (JOSE). The AES GCM
    decryption routine incorrectly uses the Tag length from the actual Authentication Tag provided in the JWE.
    The spec says that a fixed length of 16 octets must be applied. Therefore this bug allows an attacker to
    provide a truncated Authentication Tag and to modify the JWE accordingly. Users should upgrade to a
    version >= 0.6.2.2. Users unable to upgrade should avoid using AES GCM encryption and replace it with
    another encryption algorithm (e.g. AES CBC). (CVE-2023-37464)

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://errata.rockylinux.org/RLSA-2023:4418");
  script_set_attribute(attribute:"see_also", value:"https://bugzilla.redhat.com/show_bug.cgi?id=2223295");
  script_set_attribute(attribute:"solution", value:
"Update the affected packages.");
  script_set_cvss_base_vector("CVSS2#AV:N/AC:L/Au:N/C:N/I:C/A:N");
  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:N/I:H/A:N");
  script_set_cvss3_temporal_vector("CVSS:3.0/E:P/RL:O/RC:C");
  script_set_attribute(attribute:"cvss_score_source", value:"CVE-2023-37464");

  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:"2023/07/14");
  script_set_attribute(attribute:"patch_publication_date", value:"2023/08/08");
  script_set_attribute(attribute:"plugin_publication_date", value:"2023/08/08");

  script_set_attribute(attribute:"plugin_type", value:"local");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:rocky:linux:cjose");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:rocky:linux:cjose-debuginfo");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:rocky:linux:cjose-debugsource");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:rocky:linux:cjose-devel");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:rocky:linux:mod_auth_openidc");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:rocky:linux:mod_auth_openidc-debuginfo");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:rocky:linux:mod_auth_openidc-debugsource");
  script_set_attribute(attribute:"cpe", value:"cpe:/o:rocky:linux:8");
  script_set_attribute(attribute:"generated_plugin", value:"current");
  script_end_attributes();

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

  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/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);

var module_ver = get_kb_item('Host/RockyLinux/appstream/mod_auth_openidc');
if (isnull(module_ver)) audit(AUDIT_PACKAGE_NOT_INSTALLED, 'Module mod_auth_openidc:2.3');
if ('2.3' >!< module_ver) audit(AUDIT_PACKAGE_NOT_AFFECTED, 'Module mod_auth_openidc:' + module_ver);

var appstreams = {
    'mod_auth_openidc:2.3': [
      {'reference':'cjose-0.6.1-3.module+el8.8.0+1406+4a7f5371', 'cpu':'aarch64', 'release':'8', 'rpm_spec_vers_cmp':TRUE},
      {'reference':'cjose-0.6.1-3.module+el8.8.0+1406+4a7f5371', 'cpu':'x86_64', 'release':'8', 'rpm_spec_vers_cmp':TRUE},
      {'reference':'cjose-debuginfo-0.6.1-3.module+el8.8.0+1406+4a7f5371', 'cpu':'aarch64', 'release':'8', 'rpm_spec_vers_cmp':TRUE},
      {'reference':'cjose-debuginfo-0.6.1-3.module+el8.8.0+1406+4a7f5371', 'cpu':'x86_64', 'release':'8', 'rpm_spec_vers_cmp':TRUE},
      {'reference':'cjose-debugsource-0.6.1-3.module+el8.8.0+1406+4a7f5371', 'cpu':'aarch64', 'release':'8', 'rpm_spec_vers_cmp':TRUE},
      {'reference':'cjose-debugsource-0.6.1-3.module+el8.8.0+1406+4a7f5371', 'cpu':'x86_64', 'release':'8', 'rpm_spec_vers_cmp':TRUE},
      {'reference':'cjose-devel-0.6.1-3.module+el8.8.0+1406+4a7f5371', 'cpu':'aarch64', 'release':'8', 'rpm_spec_vers_cmp':TRUE},
      {'reference':'cjose-devel-0.6.1-3.module+el8.8.0+1406+4a7f5371', 'cpu':'x86_64', 'release':'8', 'rpm_spec_vers_cmp':TRUE},
      {'reference':'mod_auth_openidc-2.4.9.4-1.module+el8.7.0+1061+55d14382', 'cpu':'aarch64', 'release':'8', 'rpm_spec_vers_cmp':TRUE},
      {'reference':'mod_auth_openidc-2.4.9.4-1.module+el8.7.0+1061+55d14382', 'cpu':'x86_64', 'release':'8', 'rpm_spec_vers_cmp':TRUE},
      {'reference':'mod_auth_openidc-debuginfo-2.4.9.4-1.module+el8.7.0+1061+55d14382', 'cpu':'aarch64', 'release':'8', 'rpm_spec_vers_cmp':TRUE},
      {'reference':'mod_auth_openidc-debuginfo-2.4.9.4-1.module+el8.7.0+1061+55d14382', 'cpu':'x86_64', 'release':'8', 'rpm_spec_vers_cmp':TRUE},
      {'reference':'mod_auth_openidc-debugsource-2.4.9.4-1.module+el8.7.0+1061+55d14382', 'cpu':'aarch64', 'release':'8', 'rpm_spec_vers_cmp':TRUE},
      {'reference':'mod_auth_openidc-debugsource-2.4.9.4-1.module+el8.7.0+1061+55d14382', 'cpu':'x86_64', 'release':'8', 'rpm_spec_vers_cmp':TRUE}
    ]
};

var flag = 0;
var appstreams_found = 0;
foreach var module (keys(appstreams)) {
  var appstream = NULL;
  var appstream_name = NULL;
  var appstream_version = NULL;
  var appstream_split = split(module, sep:':', keep:FALSE);
  if (!empty_or_null(appstream_split)) {
    appstream_name = appstream_split[0];
    appstream_version = appstream_split[1];
    if (!empty_or_null(appstream_name)) appstream = get_one_kb_item('Host/RockyLinux/appstream/' + appstream_name);
  }
  if (!empty_or_null(appstream) && appstream_version == appstream || appstream_name == 'all') {
    appstreams_found++;
    foreach var package_array ( appstreams[module] ) {
      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 (!appstreams_found) audit(AUDIT_PACKAGE_NOT_INSTALLED, 'Module mod_auth_openidc:2.3');

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, 'cjose / cjose-debuginfo / cjose-debugsource / cjose-devel / etc');
}