SUSE SLED15 / SLES15 Security Update : freerdp (SUSE-SU-2022:2354-1)

##
# (C) Tenable, Inc.
#
# The package checks in this plugin were extracted from
# SUSE update advisory SUSE-SU-2022:2354-1. The text itself
# is copyright (C) SUSE.
##

include('compat.inc');

if (description)
{
  script_id(162997);
  script_version("1.6");
  script_set_attribute(attribute:"plugin_modification_date", value:"2023/07/13");

  script_cve_id("CVE-2022-24882", "CVE-2022-24883");
  script_xref(name:"SuSE", value:"SUSE-SU-2022:2354-1");

  script_name(english:"SUSE SLED15 / SLES15 Security Update : freerdp (SUSE-SU-2022:2354-1)");

  script_set_attribute(attribute:"synopsis", value:
"The remote SUSE host is missing one or more security updates.");
  script_set_attribute(attribute:"description", value:
"The remote SUSE Linux SLED15 / SLED_SAP15 / SLES15 / SLES_SAP15 host has packages installed that are affected by
multiple vulnerabilities as referenced in the SUSE-SU-2022:2354-1 advisory.

  - FreeRDP is a free implementation of the Remote Desktop Protocol (RDP). In versions prior to 2.7.0, NT LAN
    Manager (NTLM) authentication does not properly abort when someone provides and empty password value. This
    issue affects FreeRDP based RDP Server implementations. RDP clients are not affected. The vulnerability is
    patched in FreeRDP 2.7.0. There are currently no known workarounds. (CVE-2022-24882)

  - FreeRDP is a free implementation of the Remote Desktop Protocol (RDP). Prior to version 2.7.0, server side
    authentication against a `SAM` file might be successful for invalid credentials if the server has
    configured an invalid `SAM` file path. FreeRDP based clients are not affected. RDP server implementations
    using FreeRDP to authenticate against a `SAM` file are affected. Version 2.7.0 contains a fix for this
    issue. As a workaround, use custom authentication via `HashCallback` and/or ensure the `SAM` database path
    configured is valid and the application has file handles left. (CVE-2022-24883)

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://bugzilla.suse.com/1198919");
  script_set_attribute(attribute:"see_also", value:"https://bugzilla.suse.com/1198921");
  script_set_attribute(attribute:"see_also", value:"https://www.suse.com/security/cve/CVE-2022-24882");
  script_set_attribute(attribute:"see_also", value:"https://www.suse.com/security/cve/CVE-2022-24883");
  # https://lists.suse.com/pipermail/sle-security-updates/2022-July/011502.html
  script_set_attribute(attribute:"see_also", value:"http://www.nessus.org/u?36849e26");
  script_set_attribute(attribute:"solution", value:
"Update the affected packages.");
  script_set_cvss_base_vector("CVSS2#AV:N/AC:M/Au:N/C:P/I:P/A:P");
  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-2022-24883");

  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:"2022/04/26");
  script_set_attribute(attribute:"patch_publication_date", value:"2022/07/11");
  script_set_attribute(attribute:"plugin_publication_date", value:"2022/07/12");

  script_set_attribute(attribute:"plugin_type", value:"local");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:novell:suse_linux:freerdp");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:novell:suse_linux:freerdp-devel");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:novell:suse_linux:freerdp-proxy");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:novell:suse_linux:libfreerdp2");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:novell:suse_linux:libwinpr2");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:novell:suse_linux:winpr2-devel");
  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) 2022-2023 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)") audit(AUDIT_OS_NOT, "SUSE");
var os_ver = pregmatch(pattern: "^(SLE(S|D)(?:_SAP)?\d+)", string:os_release);
if (isnull(os_ver)) audit(AUDIT_UNKNOWN_APP_VER, 'SUSE');
os_ver = os_ver[1];
if (! preg(pattern:"^(SLED15|SLED_SAP15|SLES15|SLES_SAP15)$", string:os_ver)) audit(AUDIT_OS_NOT, 'SUSE SLED15 / SLED_SAP15 / SLES15 / SLES_SAP15', 'SUSE (' + 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 (' + 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:"^(4)$", string:service_pack))) audit(AUDIT_OS_NOT, "SLES15 SP4", os_ver + " SP" + service_pack);
if (os_ver == "SLES_SAP15" && (! preg(pattern:"^(4)$", string:service_pack))) audit(AUDIT_OS_NOT, "SLES_SAP15 SP4", os_ver + " SP" + service_pack);

var pkgs = [
    {'reference':'freerdp-2.4.0-150400.3.3.1', 'sp':'4', 'cpu':'x86_64', 'release':'SLED_SAP15', 'rpm_spec_vers_cmp':TRUE, 'exists_check':['SLES_SAP-release-15.4']},
    {'reference':'freerdp-2.4.0-150400.3.3.1', 'sp':'4', 'cpu':'x86_64', 'release':'SLES_SAP15', 'rpm_spec_vers_cmp':TRUE, 'exists_check':['SLES_SAP-release-15.4']},
    {'reference':'freerdp-devel-2.4.0-150400.3.3.1', 'sp':'4', 'cpu':'x86_64', 'release':'SLED_SAP15', 'rpm_spec_vers_cmp':TRUE, 'exists_check':['SLES_SAP-release-15.4']},
    {'reference':'freerdp-devel-2.4.0-150400.3.3.1', 'sp':'4', 'cpu':'x86_64', 'release':'SLES_SAP15', 'rpm_spec_vers_cmp':TRUE, 'exists_check':['SLES_SAP-release-15.4']},
    {'reference':'freerdp-proxy-2.4.0-150400.3.3.1', 'sp':'4', 'cpu':'x86_64', 'release':'SLED_SAP15', 'rpm_spec_vers_cmp':TRUE, 'exists_check':['SLES_SAP-release-15.4']},
    {'reference':'freerdp-proxy-2.4.0-150400.3.3.1', 'sp':'4', 'cpu':'x86_64', 'release':'SLES_SAP15', 'rpm_spec_vers_cmp':TRUE, 'exists_check':['SLES_SAP-release-15.4']},
    {'reference':'libfreerdp2-2.4.0-150400.3.3.1', 'sp':'4', 'cpu':'x86_64', 'release':'SLED_SAP15', 'rpm_spec_vers_cmp':TRUE, 'exists_check':['SLES_SAP-release-15.4']},
    {'reference':'libfreerdp2-2.4.0-150400.3.3.1', 'sp':'4', 'cpu':'x86_64', 'release':'SLES_SAP15', 'rpm_spec_vers_cmp':TRUE, 'exists_check':['SLES_SAP-release-15.4']},
    {'reference':'libwinpr2-2.4.0-150400.3.3.1', 'sp':'4', 'cpu':'x86_64', 'release':'SLED_SAP15', 'rpm_spec_vers_cmp':TRUE, 'exists_check':['SLES_SAP-release-15.4']},
    {'reference':'libwinpr2-2.4.0-150400.3.3.1', 'sp':'4', 'cpu':'x86_64', 'release':'SLES_SAP15', 'rpm_spec_vers_cmp':TRUE, 'exists_check':['SLES_SAP-release-15.4']},
    {'reference':'winpr2-devel-2.4.0-150400.3.3.1', 'sp':'4', 'cpu':'x86_64', 'release':'SLED_SAP15', 'rpm_spec_vers_cmp':TRUE, 'exists_check':['SLES_SAP-release-15.4']},
    {'reference':'winpr2-devel-2.4.0-150400.3.3.1', 'sp':'4', 'cpu':'x86_64', 'release':'SLES_SAP15', 'rpm_spec_vers_cmp':TRUE, 'exists_check':['SLES_SAP-release-15.4']},
    {'reference':'freerdp-2.4.0-150400.3.3.1', 'sp':'4', 'cpu':'x86_64', 'release':'SLED15', 'rpm_spec_vers_cmp':TRUE, 'exists_check':['sle-we-release-15.4', 'sled-release-15.4', 'sles-release-15.4']},
    {'reference':'freerdp-2.4.0-150400.3.3.1', 'sp':'4', 'cpu':'x86_64', 'release':'SLES15', 'rpm_spec_vers_cmp':TRUE, 'exists_check':['sle-we-release-15.4', 'sled-release-15.4', 'sles-release-15.4']},
    {'reference':'freerdp-devel-2.4.0-150400.3.3.1', 'sp':'4', 'cpu':'x86_64', 'release':'SLED15', 'rpm_spec_vers_cmp':TRUE, 'exists_check':['sle-we-release-15.4', 'sled-release-15.4', 'sles-release-15.4']},
    {'reference':'freerdp-devel-2.4.0-150400.3.3.1', 'sp':'4', 'cpu':'x86_64', 'release':'SLES15', 'rpm_spec_vers_cmp':TRUE, 'exists_check':['sle-we-release-15.4', 'sled-release-15.4', 'sles-release-15.4']},
    {'reference':'freerdp-proxy-2.4.0-150400.3.3.1', 'sp':'4', 'cpu':'x86_64', 'release':'SLED15', 'rpm_spec_vers_cmp':TRUE, 'exists_check':['sle-we-release-15.4', 'sled-release-15.4', 'sles-release-15.4']},
    {'reference':'freerdp-proxy-2.4.0-150400.3.3.1', 'sp':'4', 'cpu':'x86_64', 'release':'SLES15', 'rpm_spec_vers_cmp':TRUE, 'exists_check':['sle-we-release-15.4', 'sled-release-15.4', 'sles-release-15.4']},
    {'reference':'libfreerdp2-2.4.0-150400.3.3.1', 'sp':'4', 'cpu':'x86_64', 'release':'SLED15', 'rpm_spec_vers_cmp':TRUE, 'exists_check':['sle-we-release-15.4', 'sled-release-15.4', 'sles-release-15.4']},
    {'reference':'libfreerdp2-2.4.0-150400.3.3.1', 'sp':'4', 'cpu':'x86_64', 'release':'SLES15', 'rpm_spec_vers_cmp':TRUE, 'exists_check':['sle-we-release-15.4', 'sled-release-15.4', 'sles-release-15.4']},
    {'reference':'libwinpr2-2.4.0-150400.3.3.1', 'sp':'4', 'cpu':'x86_64', 'release':'SLED15', 'rpm_spec_vers_cmp':TRUE, 'exists_check':['sle-we-release-15.4', 'sled-release-15.4', 'sles-release-15.4']},
    {'reference':'libwinpr2-2.4.0-150400.3.3.1', 'sp':'4', 'cpu':'x86_64', 'release':'SLES15', 'rpm_spec_vers_cmp':TRUE, 'exists_check':['sle-we-release-15.4', 'sled-release-15.4', 'sles-release-15.4']},
    {'reference':'winpr2-devel-2.4.0-150400.3.3.1', 'sp':'4', 'cpu':'x86_64', 'release':'SLED15', 'rpm_spec_vers_cmp':TRUE, 'exists_check':['sle-we-release-15.4', 'sled-release-15.4', 'sles-release-15.4']},
    {'reference':'winpr2-devel-2.4.0-150400.3.3.1', 'sp':'4', 'cpu':'x86_64', 'release':'SLES15', 'rpm_spec_vers_cmp':TRUE, 'exists_check':['sle-we-release-15.4', 'sled-release-15.4', 'sles-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;
        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)
{
  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, 'freerdp / freerdp-devel / freerdp-proxy / libfreerdp2 / libwinpr2 / etc');
}