EulerOS Virtualization 2.5.2 : systemd (EulerOS-SA-2018-1371)

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

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

if (description)
{
  script_id(119062);
  script_version("1.8");
  script_set_attribute(attribute:"plugin_modification_date", value:"2021/04/08");

  script_cve_id(
    "CVE-2016-7795",
    "CVE-2017-18078"
  );

  script_name(english:"EulerOS Virtualization 2.5.2 : systemd (EulerOS-SA-2018-1371)");
  script_summary(english:"Checks the rpm output for the updated packages.");

  script_set_attribute(attribute:"synopsis", value:
"The remote EulerOS Virtualization host is missing multiple security
updates.");
  script_set_attribute(attribute:"description", value:
"According to the versions of the systemd packages installed, the
EulerOS Virtualization installation on the remote host is affected by
the following vulnerabilities :

  - A flaw was found in the way systemd handled empty
    notification messages. A local attacker could use this
    flaw to make systemd freeze its execution, preventing
    further management of system services, system shutdown,
    or zombie process collection via
    systemd.i1/4^CVE-2016-7795i1/4%0

  - systemd-tmpfiles in systemd before 237 attempts to
    support ownership/permission changes on hardlinked
    files even if the fs.protected_hardlinks sysctl is
    turned off, which allows local users to bypass intended
    access restrictions via vectors involving a hard link
    to a file for which the user lacks write access, as
    demonstrated by changing the ownership of the
    /etc/passwd file.i1/4^CVE-2017-18078i1/4%0

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-2018-1371
  script_set_attribute(attribute:"see_also", value:"http://www.nessus.org/u?2c59ea75");
  script_set_attribute(attribute:"solution", value:
"Update the affected systemd packages.");
  script_set_cvss_base_vector("CVSS2#AV:L/AC:L/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:L/AC:L/PR:L/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-2017-18078");
  script_set_attribute(attribute:"exploitability_ease", value:"Exploits are available");
  script_set_attribute(attribute:"exploit_available", value:"true");

  script_set_attribute(attribute:"patch_publication_date", value:"2018/11/07");
  script_set_attribute(attribute:"plugin_publication_date", value:"2018/11/21");

  script_set_attribute(attribute:"plugin_type", value:"local");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:huawei:euleros:libgudev1");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:huawei:euleros:systemd");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:huawei:euleros:systemd-devel");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:huawei:euleros:systemd-libs");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:huawei:euleros:systemd-networkd");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:huawei:euleros:systemd-python");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:huawei:euleros:systemd-resolved");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:huawei:euleros:systemd-sysv");
  script_set_attribute(attribute:"cpe", value:"cpe:/o:huawei:euleros:uvp:2.5.2");
  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) 2018-2021 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/EulerOS/release", "Host/EulerOS/rpm-list", "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");
uvp = get_kb_item("Host/EulerOS/uvp_version");
if (uvp != "2.5.2") audit(AUDIT_OS_NOT, "EulerOS Virtualization 2.5.2");
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 = ["libgudev1-219-57.h58",
        "systemd-219-57.h58",
        "systemd-devel-219-57.h58",
        "systemd-libs-219-57.h58",
        "systemd-networkd-219-57.h58",
        "systemd-python-219-57.h58",
        "systemd-resolved-219-57.h58",
        "systemd-sysv-219-57.h58"];

foreach (pkg in pkgs)
  if (rpm_check(release:"EulerOS-2.0", 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, "systemd");
}