EulerOS 2.0 SP2 : sssd (EulerOS-SA-2019-1754)

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

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

if (description)
{
  script_id(126881);
  script_version("1.6");
  script_set_attribute(attribute:"plugin_modification_date", value:"2024/05/09");

  script_cve_id("CVE-2019-3811");

  script_name(english:"EulerOS 2.0 SP2 : sssd (EulerOS-SA-2019-1754)");

  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 vulnerability was found in sssd where, if a user was
    configured with no home directory set, sssd would
    return '/' (the root directory) instead of '' (the
    empty string / no home directory). This could impact
    services that restrict the user's filesystem access to
    within their home directory through
    chroot().(CVE-2019-3811)

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-2019-1754
  script_set_attribute(attribute:"see_also", value:"http://www.nessus.org/u?4a3d0c8f");
  script_set_attribute(attribute:"solution", value:
"Update the affected sssd package.");
  script_set_cvss_base_vector("CVSS2#AV:A/AC:L/Au:S/C:N/I:N/A:P");
  script_set_cvss_temporal_vector("CVSS2#E:U/RL:OF/RC:C");
  script_set_cvss3_base_vector("CVSS:3.0/AV:A/AC:L/PR:L/UI:R/S:U/C:N/I:N/A:H");
  script_set_cvss3_temporal_vector("CVSS:3.0/E:U/RL:O/RC:C");
  script_set_attribute(attribute:"cvss_score_source", value:"CVE-2019-3811");

  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:"2019/07/23");
  script_set_attribute(attribute:"plugin_publication_date", value:"2019/07/22");

  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.h3",
        "libsss_autofs-1.15.2-50.8.h3",
        "libsss_certmap-1.15.2-50.8.h3",
        "libsss_idmap-1.15.2-50.8.h3",
        "libsss_nss_idmap-1.15.2-50.8.h3",
        "libsss_simpleifp-1.15.2-50.8.h3",
        "libsss_sudo-1.15.2-50.8.h3",
        "python-libipa_hbac-1.15.2-50.8.h3",
        "python-libsss_nss_idmap-1.15.2-50.8.h3",
        "python-sss-1.15.2-50.8.h3",
        "python-sss-murmur-1.15.2-50.8.h3",
        "python-sssdconfig-1.15.2-50.8.h3",
        "sssd-1.15.2-50.8.h3",
        "sssd-ad-1.15.2-50.8.h3",
        "sssd-client-1.15.2-50.8.h3",
        "sssd-common-1.15.2-50.8.h3",
        "sssd-common-pac-1.15.2-50.8.h3",
        "sssd-dbus-1.15.2-50.8.h3",
        "sssd-ipa-1.15.2-50.8.h3",
        "sssd-krb5-1.15.2-50.8.h3",
        "sssd-krb5-common-1.15.2-50.8.h3",
        "sssd-ldap-1.15.2-50.8.h3",
        "sssd-libwbclient-1.15.2-50.8.h3",
        "sssd-proxy-1.15.2-50.8.h3",
        "sssd-tools-1.15.2-50.8.h3"];

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_NOTE,
    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");
}