EulerOS 2.0 SP5 : libreoffice (EulerOS-SA-2019-2169)

2019-11-12T00:00:00
ID EULEROS_SA-2019-2169.NASL
Type nessus
Reporter This script is Copyright (C) 2019 and is owned by Tenable, Inc. or an Affiliate thereof.
Modified 2020-04-02T00:00:00

Description

According to the version of the libreoffice packages installed, the EulerOS installation on the remote host is affected by the following vulnerability :

  • LibreOffice has a feature where documents can specify that pre-installed macros can be executed on various script events such as mouse-over, document-open etc. Access is intended to be restricted to scripts under the share/Scripts/python, user/Scripts/python sub-directories of the LibreOffice install. Protection was added, to address CVE-2019-9852, to avoid a directory traversal attack where scripts in arbitrary locations on the file system could be executed by employing a URL encoding attack to defeat the path verification step. However this protection could be bypassed by taking advantage of a flaw in how LibreOffice assembled the final script URL location directly from components of the passed in path as opposed to solely from the sanitized output of the path verification step. This issue affects: Document Foundation LibreOffice 6.2 versions prior to 6.2.7 6.3 versions prior to 6.3.1.(CVE-2019-9854)

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.

                                        
                                            #
# (C) Tenable Network Security, Inc.
#

include("compat.inc");

if (description)
{
  script_id(130878);
  script_version("1.3");
  script_cvs_date("Date: 2019/12/12");

  script_cve_id(
    "CVE-2019-9854"
  );

  script_name(english:"EulerOS 2.0 SP5 : libreoffice (EulerOS-SA-2019-2169)");
  script_summary(english:"Checks the rpm output for the updated package.");

  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 libreoffice packages installed, the
EulerOS installation on the remote host is affected by the following
vulnerability :

  - LibreOffice has a feature where documents can specify
    that pre-installed macros can be executed on various
    script events such as mouse-over, document-open etc.
    Access is intended to be restricted to scripts under
    the share/Scripts/python, user/Scripts/python
    sub-directories of the LibreOffice install. Protection
    was added, to address CVE-2019-9852, to avoid a
    directory traversal attack where scripts in arbitrary
    locations on the file system could be executed by
    employing a URL encoding attack to defeat the path
    verification step. However this protection could be
    bypassed by taking advantage of a flaw in how
    LibreOffice assembled the final script URL location
    directly from components of the passed in path as
    opposed to solely from the sanitized output of the path
    verification step. This issue affects: Document
    Foundation LibreOffice 6.2 versions prior to 6.2.7 6.3
    versions prior to 6.3.1.(CVE-2019-9854)

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-2019-2169
  script_set_attribute(attribute:"see_also", value:"http://www.nessus.org/u?5a8545ca");
  script_set_attribute(attribute:"solution", value:
"Update the affected libreoffice package.");
  script_set_cvss_base_vector("CVSS2#AV:N/AC:L/Au:N/C:P/I:P/A:P");
  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:N/UI:N/S:U/C:H/I:H/A:H");
  script_set_cvss3_temporal_vector("CVSS:3.0/E:U/RL:O/RC:C");
  script_set_attribute(attribute:"exploitability_ease", value:"No known exploits are available");

  script_set_attribute(attribute:"patch_publication_date", value:"2019/10/28");
  script_set_attribute(attribute:"plugin_publication_date", value:"2019/11/12");

  script_set_attribute(attribute:"plugin_type", value:"local");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:huawei:euleros:autocorr-en");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:huawei:euleros:libreoffice-calc");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:huawei:euleros:libreoffice-core");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:huawei:euleros:libreoffice-data");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:huawei:euleros:libreoffice-draw");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:huawei:euleros:libreoffice-filters");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:huawei:euleros:libreoffice-graphicfilter");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:huawei:euleros:libreoffice-gtk2");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:huawei:euleros:libreoffice-gtk3");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:huawei:euleros:libreoffice-impress");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:huawei:euleros:libreoffice-langpack-en");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:huawei:euleros:libreoffice-math");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:huawei:euleros:libreoffice-opensymbol-fonts");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:huawei:euleros:libreoffice-pdfimport");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:huawei:euleros:libreoffice-pyuno");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:huawei:euleros:libreoffice-ure");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:huawei:euleros:libreoffice-ure-common");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:huawei:euleros:libreoffice-writer");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:huawei:euleros:libreoffice-x11");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:huawei:euleros:libreoffice-xsltfilter");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:huawei:euleros:libreofficekit");
  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 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 !~ "^(5)$") audit(AUDIT_OS_NOT, "EulerOS 2.0 SP5");

uvp = get_kb_item("Host/EulerOS/uvp_version");
if (!empty_or_null(uvp)) audit(AUDIT_OS_NOT, "EulerOS 2.0 SP5", "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$") audit(AUDIT_LOCAL_CHECKS_NOT_IMPLEMENTED, "EulerOS", cpu);

flag = 0;

pkgs = ["autocorr-en-5.3.6.1-10.h3.eulerosv2r7",
        "libreoffice-calc-5.3.6.1-10.h3.eulerosv2r7",
        "libreoffice-core-5.3.6.1-10.h3.eulerosv2r7",
        "libreoffice-data-5.3.6.1-10.h3.eulerosv2r7",
        "libreoffice-draw-5.3.6.1-10.h3.eulerosv2r7",
        "libreoffice-filters-5.3.6.1-10.h3.eulerosv2r7",
        "libreoffice-graphicfilter-5.3.6.1-10.h3.eulerosv2r7",
        "libreoffice-gtk2-5.3.6.1-10.h3.eulerosv2r7",
        "libreoffice-gtk3-5.3.6.1-10.h3.eulerosv2r7",
        "libreoffice-impress-5.3.6.1-10.h3.eulerosv2r7",
        "libreoffice-langpack-en-5.3.6.1-10.h3.eulerosv2r7",
        "libreoffice-math-5.3.6.1-10.h3.eulerosv2r7",
        "libreoffice-opensymbol-fonts-5.3.6.1-10.h3.eulerosv2r7",
        "libreoffice-pdfimport-5.3.6.1-10.h3.eulerosv2r7",
        "libreoffice-pyuno-5.3.6.1-10.h3.eulerosv2r7",
        "libreoffice-ure-5.3.6.1-10.h3.eulerosv2r7",
        "libreoffice-ure-common-5.3.6.1-10.h3.eulerosv2r7",
        "libreoffice-writer-5.3.6.1-10.h3.eulerosv2r7",
        "libreoffice-x11-5.3.6.1-10.h3.eulerosv2r7",
        "libreoffice-xsltfilter-5.3.6.1-10.h3.eulerosv2r7",
        "libreofficekit-5.3.6.1-10.h3.eulerosv2r7"];

foreach (pkg in pkgs)
  if (rpm_check(release:"EulerOS-2.0", sp:"5", reference:pkg)) flag++;

if (flag)
{
  security_report_v4(
    port       : 0,
    severity   : SECURITY_HOLE,
    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, "libreoffice");
}