EulerOS 2.0 SP2 : sssd (EulerOS-SA-2019-2517)

#%NASL_MIN_LEVEL 70300
#
# (C) Tenable Network Security, Inc.
#

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

if (description)
{
  script_id(131670);
  script_version("1.6");
  script_set_attribute(attribute:"plugin_modification_date", value:"2024/04/08");

  script_cve_id("CVE-2018-16838");

  script_name(english:"EulerOS 2.0 SP2 : sssd (EulerOS-SA-2019-2517)");

  script_set_attribute(attribute:"synopsis", value:
"The remote EulerOS host is missing a security update.");
  script_set_attribute(attribute:"description", value:
"According to the version of the sssd packages installed, the EulerOS
installation on the remote host is affected by the following
vulnerability :

  - A flaw was found in sssd Group Policy Objects
    implementation. When the GPO is not readable by SSSD
    due to a too strict permission settings on the server
    side, SSSD will allow all authenticated users to login
    instead of denying access.(CVE-2018-16838)

Note that Tenable Network Security has extracted the preceding
description block directly from the EulerOS security advisory. Tenable
has attempted to automatically clean and format it as much as possible
without introducing additional issues.");
  # https://developer.huaweicloud.com/ict/en/site-euleros/euleros/security-advisories/EulerOS-SA-2019-2517
  script_set_attribute(attribute:"see_also", value:"http://www.nessus.org/u?dcf95b4d");
  script_set_attribute(attribute:"solution", value:
"Update the affected sssd package.");
  script_set_cvss_base_vector("CVSS2#AV:N/AC:L/Au:S/C:P/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:L/UI:N/S:U/C:L/I:L/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-2018-16838");

  script_set_attribute(attribute:"exploitability_ease", value:"No known exploits are available");
  script_set_attribute(attribute:"exploit_available", value:"false");

  script_set_attribute(attribute:"patch_publication_date", value:"2019/12/04");
  script_set_attribute(attribute:"plugin_publication_date", value:"2019/12/04");

  script_set_attribute(attribute:"plugin_type", value:"local");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:huawei:euleros:libipa_hbac");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:huawei:euleros:libsss_autofs");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:huawei:euleros:libsss_certmap");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:huawei:euleros:libsss_idmap");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:huawei:euleros:libsss_nss_idmap");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:huawei:euleros:libsss_simpleifp");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:huawei:euleros:libsss_sudo");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:huawei:euleros:python-libipa_hbac");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:huawei:euleros:python-libsss_nss_idmap");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:huawei:euleros:python-sss");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:huawei:euleros:python-sss-murmur");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:huawei:euleros:python-sssdconfig");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:huawei:euleros:sssd");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:huawei:euleros:sssd-ad");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:huawei:euleros:sssd-client");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:huawei:euleros:sssd-common");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:huawei:euleros:sssd-common-pac");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:huawei:euleros:sssd-dbus");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:huawei:euleros:sssd-ipa");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:huawei:euleros:sssd-krb5");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:huawei:euleros:sssd-krb5-common");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:huawei:euleros:sssd-ldap");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:huawei:euleros:sssd-libwbclient");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:huawei:euleros:sssd-proxy");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:huawei:euleros:sssd-tools");
  script_set_attribute(attribute:"cpe", value:"cpe:/o:huawei:euleros:2.0");
  script_set_attribute(attribute:"generated_plugin", value:"current");
  script_end_attributes();

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

  script_copyright(english:"This script is Copyright (C) 2019-2024 and is owned by Tenable, Inc. or an Affiliate thereof.");

  script_dependencies("ssh_get_info.nasl");
  script_require_keys("Host/local_checks_enabled", "Host/EulerOS/release", "Host/EulerOS/rpm-list", "Host/EulerOS/sp");
  script_exclude_keys("Host/EulerOS/uvp_version");

  exit(0);
}

include("audit.inc");
include("global_settings.inc");
include("rpm.inc");

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

release = get_kb_item("Host/EulerOS/release");
if (isnull(release) || release !~ "^EulerOS") audit(AUDIT_OS_NOT, "EulerOS");
if (release !~ "^EulerOS release 2\.0(\D|$)") audit(AUDIT_OS_NOT, "EulerOS 2.0");

sp = get_kb_item("Host/EulerOS/sp");
if (isnull(sp) || sp !~ "^(2)$") audit(AUDIT_OS_NOT, "EulerOS 2.0 SP2");

uvp = get_kb_item("Host/EulerOS/uvp_version");
if (!empty_or_null(uvp)) audit(AUDIT_OS_NOT, "EulerOS 2.0 SP2", "EulerOS UVP " + uvp);

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

cpu = get_kb_item("Host/cpu");
if (isnull(cpu)) audit(AUDIT_UNKNOWN_ARCH);
if ("x86_64" >!< cpu && cpu !~ "^i[3-6]86$" && "aarch64" >!< cpu) audit(AUDIT_LOCAL_CHECKS_NOT_IMPLEMENTED, "EulerOS", cpu);
if ("x86_64" >!< cpu && cpu !~ "^i[3-6]86$") audit(AUDIT_ARCH_NOT, "i686 / x86_64", cpu);

flag = 0;

pkgs = ["libipa_hbac-1.15.2-50.8.h4",
        "libsss_autofs-1.15.2-50.8.h4",
        "libsss_certmap-1.15.2-50.8.h4",
        "libsss_idmap-1.15.2-50.8.h4",
        "libsss_nss_idmap-1.15.2-50.8.h4",
        "libsss_simpleifp-1.15.2-50.8.h4",
        "libsss_sudo-1.15.2-50.8.h4",
        "python-libipa_hbac-1.15.2-50.8.h4",
        "python-libsss_nss_idmap-1.15.2-50.8.h4",
        "python-sss-1.15.2-50.8.h4",
        "python-sss-murmur-1.15.2-50.8.h4",
        "python-sssdconfig-1.15.2-50.8.h4",
        "sssd-1.15.2-50.8.h4",
        "sssd-ad-1.15.2-50.8.h4",
        "sssd-client-1.15.2-50.8.h4",
        "sssd-common-1.15.2-50.8.h4",
        "sssd-common-pac-1.15.2-50.8.h4",
        "sssd-dbus-1.15.2-50.8.h4",
        "sssd-ipa-1.15.2-50.8.h4",
        "sssd-krb5-1.15.2-50.8.h4",
        "sssd-krb5-common-1.15.2-50.8.h4",
        "sssd-ldap-1.15.2-50.8.h4",
        "sssd-libwbclient-1.15.2-50.8.h4",
        "sssd-proxy-1.15.2-50.8.h4",
        "sssd-tools-1.15.2-50.8.h4"];

foreach (pkg in pkgs)
  if (rpm_check(release:"EulerOS-2.0", sp:"2", reference:pkg)) flag++;

if (flag)
{
  security_report_v4(
    port       : 0,
    severity   : SECURITY_WARNING,
    extra      : rpm_report_get()
  );
  exit(0);
}
else
{
  tested = pkg_tests_get();
  if (tested) audit(AUDIT_PACKAGE_NOT_AFFECTED, tested);
  else audit(AUDIT_PACKAGE_NOT_INSTALLED, "sssd");
}