Vulnerabilities > CVE-2018-16395

#
# (C) Tenable Network Security, Inc.
#
# The descriptive text and package checks in this plugin were  
# extracted from the FreeBSD VuXML database :
#
# Copyright 2003-2018 Jacques Vidrine and contributors
#
# Redistribution and use in source (VuXML) and 'compiled' forms (SGML,
# HTML, PDF, PostScript, RTF and so forth) with or without modification,
# are permitted provided that the following conditions are met:
# 1. Redistributions of source code (VuXML) must retain the above
#    copyright notice, this list of conditions and the following
#    disclaimer as the first lines of this file unmodified.
# 2. Redistributions in compiled form (transformed to other DTDs,
#    published online in any format, converted to PDF, PostScript,
#    RTF and other formats) must reproduce the above copyright
#    notice, this list of conditions and the following disclaimer
#    in the documentation and/or other materials provided with the
#    distribution.
# 
# THIS DOCUMENTATION IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS "AS IS"
# AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO,
# THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
# PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS
# BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY,
# OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT
# OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR
# BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY,
# WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE
# OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS DOCUMENTATION,
# EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
#

include("compat.inc");

if (description)
{
  script_id(118247);
  script_version("1.3");
  script_cvs_date("Date: 2018/12/19 13:21:19");

  script_cve_id("CVE-2018-16395", "CVE-2018-16396");

  script_name(english:"FreeBSD : ruby -- multiple vulnerabilities (afc60484-0652-440e-b01a-5ef814747f06)");
  script_summary(english:"Checks for updated packages in pkg_info output");

  script_set_attribute(
    attribute:"synopsis", 
    value:
"The remote FreeBSD host is missing one or more security-related
updates."
  );
  script_set_attribute(
    attribute:"description", 
    value:
"Ruby news :

CVE-2018-16395: OpenSSL::X509::Name equality check does not work
correctly

An instance of OpenSSL::X509::Name contains entities such as CN, C and
so on. Some two instances of OpenSSL::X509::Name are equal only when
all entities are exactly equal. However, there is a bug that the
equality check is not correct if the value of an entity of the
argument (right-hand side) starts with the value of the receiver
(left-hand side). So, if a malicious X.509 certificate is passed to
compare with an existing certificate, there is a possibility to be
judged incorrectly that they are equal.

CVE-2018-16396: Tainted flags are not propagated in Array#pack and
String#unpack with some directives

Array#pack method converts the receiver's contents into a string with
specified format. If the receiver contains some tainted objects, the
returned string also should be tainted. String#unpack method which
converts the receiver into an array also should propagate its tainted
flag to the objects contained in the returned array. But, with B, b, H
and h directives, the tainted flags are not propagated. So, if a
script processes unreliable inputs by Array#pack and/or String#unpack
with these directives and checks the reliability with tainted flags,
the check might be wrong."
  );
  script_set_attribute(
    attribute:"see_also",
    value:"https://www.ruby-lang.org/en/news/2018/10/17/ruby-2-5-2-released/"
  );
  # https://www.ruby-lang.org/en/news/2018/10/17/openssl-x509-name-equality-check-does-not-work-correctly-cve-2018-16395/
  script_set_attribute(
    attribute:"see_also",
    value:"http://www.nessus.org/u?2cb277f6"
  );
  # https://www.ruby-lang.org/en/news/2018/10/17/not-propagated-taint-flag-in-some-formats-of-pack-cve-2018-16396/
  script_set_attribute(
    attribute:"see_also",
    value:"http://www.nessus.org/u?4ea53be8"
  );
  # https://vuxml.freebsd.org/freebsd/afc60484-0652-440e-b01a-5ef814747f06.html
  script_set_attribute(
    attribute:"see_also",
    value:"http://www.nessus.org/u?60c17970"
  );
  script_set_attribute(attribute:"solution", value:"Update the affected packages.");
  script_set_cvss_base_vector("CVSS2#AV:N/AC:L/Au:N/C:P/I:P/A:P");
  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_attribute(attribute:"plugin_type", value:"local");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:freebsd:freebsd:ruby");
  script_set_attribute(attribute:"cpe", value:"cpe:/o:freebsd:freebsd");

  script_set_attribute(attribute:"vuln_publication_date", value:"2018/10/17");
  script_set_attribute(attribute:"patch_publication_date", value:"2018/10/20");
  script_set_attribute(attribute:"plugin_publication_date", value:"2018/10/22");
  script_end_attributes();

  script_category(ACT_GATHER_INFO);
  script_copyright(english:"This script is Copyright (C) 2018 and is owned by Tenable, Inc. or an Affiliate thereof.");
  script_family(english:"FreeBSD Local Security Checks");

  script_dependencies("ssh_get_info.nasl");
  script_require_keys("Host/local_checks_enabled", "Host/FreeBSD/release", "Host/FreeBSD/pkg_info");

  exit(0);
}


include("audit.inc");
include("freebsd_package.inc");


if (!get_kb_item("Host/local_checks_enabled")) audit(AUDIT_LOCAL_CHECKS_NOT_ENABLED);
if (!get_kb_item("Host/FreeBSD/release")) audit(AUDIT_OS_NOT, "FreeBSD");
if (!get_kb_item("Host/FreeBSD/pkg_info")) audit(AUDIT_PACKAGE_LIST_MISSING);


flag = 0;

if (pkg_test(save_report:TRUE, pkg:"ruby>=2.3.0,1<2.3.8,1")) flag++;
if (pkg_test(save_report:TRUE, pkg:"ruby>=2.4.0,1<2.4.5,1")) flag++;
if (pkg_test(save_report:TRUE, pkg:"ruby>=2.5.0,1<2.5.2,1")) flag++;

if (flag)
{
  if (report_verbosity > 0) security_hole(port:0, extra:pkg_report_get());
  else security_hole(0);
  exit(0);
}
else audit(AUDIT_HOST_NOT, "affected");

#
# (C) Tenable Network Security, Inc.
#
# The descriptive text and package checks in this plugin were
# extracted from Amazon Linux AMI Security Advisory ALAS-2018-1113.
#

include("compat.inc");

if (description)
{
  script_id(119472);
  script_version("1.4");
  script_set_attribute(attribute:"plugin_modification_date", value:"2020/06/09");

  script_cve_id("CVE-2018-16395", "CVE-2018-16396");
  script_xref(name:"ALAS", value:"2018-1113");

  script_name(english:"Amazon Linux AMI : ruby23 / ruby24 (ALAS-2018-1113)");
  script_summary(english:"Checks rpm output for the updated packages");

  script_set_attribute(
    attribute:"synopsis",
    value:"The remote Amazon Linux AMI host is missing a security update."
  );
  script_set_attribute(
    attribute:"description",
    value:
"An issue was discovered in the OpenSSL library in Ruby before 2.3.8,
2.4.x before 2.4.5, 2.5.x before 2.5.2, and 2.6.x before
2.6.0-preview3. When two OpenSSL::X509::Name objects are compared
using ==, depending on the ordering, non-equal objects may return
true. When the first argument is one character longer than the second,
or the second argument contains a character that is one less than a
character in the same position of the first argument, the result of ==
will be true. This could be leveraged to create an illegitimate
certificate that may be accepted as legitimate and then used in
signing or encryption operations.(CVE-2018-16395)

An issue was discovered in Ruby before 2.3.8, 2.4.x before 2.4.5,
2.5.x before 2.5.2, and 2.6.x before 2.6.0-preview3. It does not taint
strings that result from unpacking tainted strings with some
formats.(CVE-2018-16396)"
  );
  script_set_attribute(
    attribute:"see_also",
    value:"https://alas.aws.amazon.com/ALAS-2018-1113.html"
  );
  script_set_attribute(
    attribute:"solution",
    value:"Run 'yum update ruby23' to update your system."
  );
  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:"plugin_type", value:"local");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:amazon:linux:ruby23");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:amazon:linux:ruby23-debuginfo");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:amazon:linux:ruby23-devel");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:amazon:linux:ruby23-doc");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:amazon:linux:ruby23-irb");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:amazon:linux:ruby23-libs");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:amazon:linux:ruby24");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:amazon:linux:ruby24-debuginfo");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:amazon:linux:ruby24-devel");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:amazon:linux:ruby24-doc");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:amazon:linux:ruby24-irb");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:amazon:linux:ruby24-libs");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:amazon:linux:rubygem23-bigdecimal");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:amazon:linux:rubygem23-did_you_mean");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:amazon:linux:rubygem23-io-console");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:amazon:linux:rubygem23-json");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:amazon:linux:rubygem23-psych");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:amazon:linux:rubygem24-bigdecimal");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:amazon:linux:rubygem24-did_you_mean");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:amazon:linux:rubygem24-io-console");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:amazon:linux:rubygem24-json");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:amazon:linux:rubygem24-psych");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:amazon:linux:rubygem24-xmlrpc");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:amazon:linux:rubygems23");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:amazon:linux:rubygems23-devel");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:amazon:linux:rubygems24");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:amazon:linux:rubygems24-devel");
  script_set_attribute(attribute:"cpe", value:"cpe:/o:amazon:linux");

  script_set_attribute(attribute:"vuln_publication_date", value:"2018/11/16");
  script_set_attribute(attribute:"patch_publication_date", value:"2018/12/14");
  script_set_attribute(attribute:"plugin_publication_date", value:"2018/12/07");
  script_set_attribute(attribute:"generated_plugin", value:"current");
  script_end_attributes();

  script_category(ACT_GATHER_INFO);
  script_copyright(english:"This script is Copyright (C) 2018-2020 and is owned by Tenable, Inc. or an Affiliate thereof.");
  script_family(english:"Amazon Linux Local Security Checks");

  script_dependencies("ssh_get_info.nasl");
  script_require_keys("Host/local_checks_enabled", "Host/AmazonLinux/release", "Host/AmazonLinux/rpm-list");

  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/AmazonLinux/release");
if (isnull(release) || !strlen(release)) audit(AUDIT_OS_NOT, "Amazon Linux");
os_ver = pregmatch(pattern: "^AL(A|\d)", string:release);
if (isnull(os_ver)) audit(AUDIT_UNKNOWN_APP_VER, "Amazon Linux");
os_ver = os_ver[1];
if (os_ver != "A")
{
  if (os_ver == 'A') os_ver = 'AMI';
  audit(AUDIT_OS_NOT, "Amazon Linux AMI", "Amazon Linux " + os_ver);
}

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


flag = 0;
if (rpm_check(release:"ALA", reference:"ruby23-2.3.8-1.20.amzn1")) flag++;
if (rpm_check(release:"ALA", reference:"ruby23-debuginfo-2.3.8-1.20.amzn1")) flag++;
if (rpm_check(release:"ALA", reference:"ruby23-devel-2.3.8-1.20.amzn1")) flag++;
if (rpm_check(release:"ALA", reference:"ruby23-doc-2.3.8-1.20.amzn1")) flag++;
if (rpm_check(release:"ALA", reference:"ruby23-irb-2.3.8-1.20.amzn1")) flag++;
if (rpm_check(release:"ALA", reference:"ruby23-libs-2.3.8-1.20.amzn1")) flag++;
if (rpm_check(release:"ALA", reference:"ruby24-2.4.5-1.30.7.amzn1")) flag++;
if (rpm_check(release:"ALA", reference:"ruby24-debuginfo-2.4.5-1.30.7.amzn1")) flag++;
if (rpm_check(release:"ALA", reference:"ruby24-devel-2.4.5-1.30.7.amzn1")) flag++;
if (rpm_check(release:"ALA", reference:"ruby24-doc-2.4.5-1.30.7.amzn1")) flag++;
if (rpm_check(release:"ALA", reference:"ruby24-irb-2.4.5-1.30.7.amzn1")) flag++;
if (rpm_check(release:"ALA", reference:"ruby24-libs-2.4.5-1.30.7.amzn1")) flag++;
if (rpm_check(release:"ALA", reference:"rubygem23-bigdecimal-1.2.8-1.20.amzn1")) flag++;
if (rpm_check(release:"ALA", reference:"rubygem23-did_you_mean-1.0.0-1.20.amzn1")) flag++;
if (rpm_check(release:"ALA", reference:"rubygem23-io-console-0.4.5-1.20.amzn1")) flag++;
if (rpm_check(release:"ALA", reference:"rubygem23-json-1.8.3.1-1.20.amzn1")) flag++;
if (rpm_check(release:"ALA", reference:"rubygem23-psych-2.1.0.1-1.20.amzn1")) flag++;
if (rpm_check(release:"ALA", reference:"rubygem24-bigdecimal-1.3.2-1.30.7.amzn1")) flag++;
if (rpm_check(release:"ALA", reference:"rubygem24-did_you_mean-1.1.0-1.30.7.amzn1")) flag++;
if (rpm_check(release:"ALA", reference:"rubygem24-io-console-0.4.6-1.30.7.amzn1")) flag++;
if (rpm_check(release:"ALA", reference:"rubygem24-json-2.0.4-1.30.7.amzn1")) flag++;
if (rpm_check(release:"ALA", reference:"rubygem24-psych-2.2.2-1.30.7.amzn1")) flag++;
if (rpm_check(release:"ALA", reference:"rubygem24-xmlrpc-0.2.1-1.30.7.amzn1")) flag++;
if (rpm_check(release:"ALA", reference:"rubygems23-2.5.2.3-1.20.amzn1")) flag++;
if (rpm_check(release:"ALA", reference:"rubygems23-devel-2.5.2.3-1.20.amzn1")) flag++;
if (rpm_check(release:"ALA", reference:"rubygems24-2.6.14.3-1.30.7.amzn1")) flag++;
if (rpm_check(release:"ALA", reference:"rubygems24-devel-2.6.14.3-1.30.7.amzn1")) flag++;

if (flag)
{
  if (report_verbosity > 0) security_hole(port:0, extra:rpm_report_get());
  else security_hole(0);
  exit(0);
}
else
{
  tested = pkg_tests_get();
  if (tested) audit(AUDIT_PACKAGE_NOT_AFFECTED, tested);
  else audit(AUDIT_PACKAGE_NOT_INSTALLED, "ruby23 / ruby23-debuginfo / ruby23-devel / ruby23-doc / ruby23-irb / etc");
}

#
# (C) Tenable Network Security, Inc.
#
# The descriptive text and package checks in this plugin were  
# extracted from Debian Security Advisory DSA-4332. The text 
# itself is copyright (C) Software in the Public Interest, Inc.
#

include("compat.inc");

if (description)
{
  script_id(118721);
  script_version("1.4");
  script_cvs_date("Date: 2018/12/18 10:18:58");

  script_cve_id("CVE-2018-16395", "CVE-2018-16396");
  script_xref(name:"DSA", value:"4332");

  script_name(english:"Debian DSA-4332-1 : ruby2.3 - security update");
  script_summary(english:"Checks dpkg output for the updated package");

  script_set_attribute(
    attribute:"synopsis", 
    value:"The remote Debian host is missing a security-related update."
  );
  script_set_attribute(
    attribute:"description", 
    value:
"Several vulnerabilities have been discovered in the interpreter for
the Ruby language. The Common Vulnerabilities and Exposures project
identifies the following problems :

  - CVE-2018-16395
    Tyler Eckstein reported that the equality check of
    OpenSSL::X509::Name could return true for non-equal
    objects. If a malicious X.509 certificate is passed to
    compare with an existing certificate, there is a
    possibility to be judged incorrectly that they are
    equal.

  - CVE-2018-16396
    Chris Seaton discovered that tainted flags are not
    propagated in Array#pack and String#unpack with some
    directives."
  );
  script_set_attribute(
    attribute:"see_also",
    value:"https://security-tracker.debian.org/tracker/CVE-2018-16395"
  );
  script_set_attribute(
    attribute:"see_also",
    value:"https://security-tracker.debian.org/tracker/CVE-2018-16396"
  );
  script_set_attribute(
    attribute:"see_also",
    value:"https://security-tracker.debian.org/tracker/source-package/ruby2.3"
  );
  script_set_attribute(
    attribute:"see_also",
    value:"https://packages.debian.org/source/stretch/ruby2.3"
  );
  script_set_attribute(
    attribute:"see_also",
    value:"https://www.debian.org/security/2018/dsa-4332"
  );
  script_set_attribute(
    attribute:"solution", 
    value:
"Upgrade the ruby2.3 packages.

For the stable distribution (stretch), these problems have been fixed
in version 2.3.3-1+deb9u4."
  );
  script_set_cvss_base_vector("CVSS2#AV:N/AC:L/Au:N/C:P/I:P/A:P");
  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_attribute(attribute:"plugin_type", value:"local");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:debian:debian_linux:ruby2.3");
  script_set_attribute(attribute:"cpe", value:"cpe:/o:debian:debian_linux:9.0");

  script_set_attribute(attribute:"patch_publication_date", value:"2018/11/03");
  script_set_attribute(attribute:"plugin_publication_date", value:"2018/11/05");
  script_end_attributes();

  script_category(ACT_GATHER_INFO);
  script_copyright(english:"This script is Copyright (C) 2018 and is owned by Tenable, Inc. or an Affiliate thereof.");
  script_family(english:"Debian Local Security Checks");

  script_dependencies("ssh_get_info.nasl");
  script_require_keys("Host/local_checks_enabled", "Host/Debian/release", "Host/Debian/dpkg-l");

  exit(0);
}


include("audit.inc");
include("debian_package.inc");


if (!get_kb_item("Host/local_checks_enabled")) audit(AUDIT_LOCAL_CHECKS_NOT_ENABLED);
if (!get_kb_item("Host/Debian/release")) audit(AUDIT_OS_NOT, "Debian");
if (!get_kb_item("Host/Debian/dpkg-l")) audit(AUDIT_PACKAGE_LIST_MISSING);


flag = 0;
if (deb_check(release:"9.0", prefix:"libruby2.3", reference:"2.3.3-1+deb9u4")) flag++;
if (deb_check(release:"9.0", prefix:"ruby2.3", reference:"2.3.3-1+deb9u4")) flag++;
if (deb_check(release:"9.0", prefix:"ruby2.3-dev", reference:"2.3.3-1+deb9u4")) flag++;
if (deb_check(release:"9.0", prefix:"ruby2.3-doc", reference:"2.3.3-1+deb9u4")) flag++;
if (deb_check(release:"9.0", prefix:"ruby2.3-tcltk", reference:"2.3.3-1+deb9u4")) flag++;

if (flag)
{
  if (report_verbosity > 0) security_hole(port:0, extra:deb_report_get());
  else security_hole(0);
  exit(0);
}
else audit(AUDIT_HOST_NOT, "affected");

#
# (C) Tenable Network Security, Inc.
#
# The descriptive text and package checks in this plugin were  
# extracted from Red Hat Security Advisory RHSA-2018:3738. The text 
# itself is copyright (C) Red Hat, Inc.
#

include("compat.inc");

if (description)
{
  script_id(119294);
  script_version("1.7");
  script_set_attribute(attribute:"plugin_modification_date", value:"2020/06/18");

  script_cve_id("CVE-2018-16395");
  script_xref(name:"RHSA", value:"2018:3738");

  script_name(english:"RHEL 7 : ruby (RHSA-2018:3738)");
  script_summary(english:"Checks the rpm output for the updated packages");

  script_set_attribute(
    attribute:"synopsis",
    value:"The remote Red Hat host is missing one or more security updates."
  );
  script_set_attribute(
    attribute:"description",
    value:
"An update for ruby is now available for Red Hat Enterprise Linux 7.

Red Hat Product Security has rated this update as having a security
impact of Important. A Common Vulnerability Scoring System (CVSS) base
score, which gives a detailed severity rating, is available for each
vulnerability from the CVE link(s) in the References section.

Ruby is an extensible, interpreted, object-oriented, scripting
language. It has features to process text files and to perform system
management tasks.

Security Fix(es) :

* ruby: OpenSSL::X509::Name equality check does not work correctly
(CVE-2018-16395)

For more details about the security issue(s), including the impact, a
CVSS score, and other related information, refer to the CVE page(s)
listed in the References section."
  );
  script_set_attribute(
    attribute:"see_also",
    value:"https://access.redhat.com/errata/RHSA-2018:3738"
  );
  script_set_attribute(
    attribute:"see_also",
    value:"https://access.redhat.com/security/cve/cve-2018-16395"
  );
  script_set_attribute(attribute:"solution", value:"Update the affected packages.");
  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:"plugin_type", value:"local");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:redhat:enterprise_linux:ruby");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:redhat:enterprise_linux:ruby-debuginfo");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:redhat:enterprise_linux:ruby-devel");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:redhat:enterprise_linux:ruby-doc");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:redhat:enterprise_linux:ruby-irb");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:redhat:enterprise_linux:ruby-libs");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:redhat:enterprise_linux:ruby-tcltk");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:redhat:enterprise_linux:rubygem-bigdecimal");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:redhat:enterprise_linux:rubygem-io-console");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:redhat:enterprise_linux:rubygem-json");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:redhat:enterprise_linux:rubygem-minitest");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:redhat:enterprise_linux:rubygem-psych");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:redhat:enterprise_linux:rubygem-rake");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:redhat:enterprise_linux:rubygem-rdoc");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:redhat:enterprise_linux:rubygems");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:redhat:enterprise_linux:rubygems-devel");
  script_set_attribute(attribute:"cpe", value:"cpe:/o:redhat:enterprise_linux:7");
  script_set_attribute(attribute:"cpe", value:"cpe:/o:redhat:enterprise_linux:7.6");

  script_set_attribute(attribute:"vuln_publication_date", value:"2018/11/16");
  script_set_attribute(attribute:"patch_publication_date", value:"2018/11/29");
  script_set_attribute(attribute:"plugin_publication_date", value:"2018/11/30");
  script_set_attribute(attribute:"generated_plugin", value:"current");
  script_end_attributes();

  script_category(ACT_GATHER_INFO);
  script_copyright(english:"This script is Copyright (C) 2018-2020 and is owned by Tenable, Inc. or an Affiliate thereof.");
  script_family(english:"Red Hat Local Security Checks");

  script_dependencies("ssh_get_info.nasl");
  script_require_keys("Host/local_checks_enabled", "Host/RedHat/release", "Host/RedHat/rpm-list", "Host/cpu");

  exit(0);
}


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

if (!get_kb_item("Host/local_checks_enabled")) audit(AUDIT_LOCAL_CHECKS_NOT_ENABLED);
release = get_kb_item("Host/RedHat/release");
if (isnull(release) || "Red Hat" >!< release) audit(AUDIT_OS_NOT, "Red Hat");
os_ver = pregmatch(pattern: "Red Hat Enterprise Linux.*release ([0-9]+(\.[0-9]+)?)", string:release);
if (isnull(os_ver)) audit(AUDIT_UNKNOWN_APP_VER, "Red Hat");
os_ver = os_ver[1];
if (! preg(pattern:"^7([^0-9]|$)", string:os_ver)) audit(AUDIT_OS_NOT, "Red Hat 7.x", "Red Hat " + os_ver);

if (!get_kb_item("Host/RedHat/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$" && "s390" >!< cpu) audit(AUDIT_LOCAL_CHECKS_NOT_IMPLEMENTED, "Red Hat", cpu);

yum_updateinfo = get_kb_item("Host/RedHat/yum-updateinfo");
if (!empty_or_null(yum_updateinfo)) 
{
  rhsa = "RHSA-2018:3738";
  yum_report = redhat_generate_yum_updateinfo_report(rhsa:rhsa);
  if (!empty_or_null(yum_report))
  {
    security_report_v4(
      port       : 0,
      severity   : SECURITY_HOLE,
      extra      : yum_report 
    );
    exit(0);
  }
  else
  {
    audit_message = "affected by Red Hat security advisory " + rhsa;
    audit(AUDIT_OS_NOT, audit_message);
  }
}
else
{
  flag = 0;
  if (rpm_check(release:"RHEL7", cpu:"s390x", reference:"ruby-2.0.0.648-34.el7_6")) flag++;

  if (rpm_check(release:"RHEL7", cpu:"x86_64", reference:"ruby-2.0.0.648-34.el7_6")) flag++;

  if (rpm_check(release:"RHEL7", reference:"ruby-debuginfo-2.0.0.648-34.el7_6")) flag++;

  if (rpm_check(release:"RHEL7", cpu:"s390x", reference:"ruby-devel-2.0.0.648-34.el7_6")) flag++;

  if (rpm_check(release:"RHEL7", cpu:"x86_64", reference:"ruby-devel-2.0.0.648-34.el7_6")) flag++;

  if (rpm_check(release:"RHEL7", reference:"ruby-doc-2.0.0.648-34.el7_6")) flag++;

  if (rpm_check(release:"RHEL7", reference:"ruby-irb-2.0.0.648-34.el7_6")) flag++;

  if (rpm_check(release:"RHEL7", reference:"ruby-libs-2.0.0.648-34.el7_6")) flag++;

  if (rpm_check(release:"RHEL7", cpu:"s390x", reference:"ruby-tcltk-2.0.0.648-34.el7_6")) flag++;

  if (rpm_check(release:"RHEL7", cpu:"x86_64", reference:"ruby-tcltk-2.0.0.648-34.el7_6")) flag++;

  if (rpm_check(release:"RHEL7", cpu:"s390x", reference:"rubygem-bigdecimal-1.2.0-34.el7_6")) flag++;

  if (rpm_check(release:"RHEL7", cpu:"x86_64", reference:"rubygem-bigdecimal-1.2.0-34.el7_6")) flag++;

  if (rpm_check(release:"RHEL7", cpu:"s390x", reference:"rubygem-io-console-0.4.2-34.el7_6")) flag++;

  if (rpm_check(release:"RHEL7", cpu:"x86_64", reference:"rubygem-io-console-0.4.2-34.el7_6")) flag++;

  if (rpm_exists(rpm:"rubygem-json-1.7", release:"RHEL7") && rpm_check(release:"RHEL7", cpu:"s390x", reference:"rubygem-json-1.7.7-34.el7_6")) flag++;

  if (rpm_exists(rpm:"rubygem-json-1.7", release:"RHEL7") && rpm_check(release:"RHEL7", cpu:"x86_64", reference:"rubygem-json-1.7.7-34.el7_6")) flag++;

  if (rpm_check(release:"RHEL7", reference:"rubygem-minitest-4.3.2-34.el7_6")) flag++;

  if (rpm_check(release:"RHEL7", cpu:"s390x", reference:"rubygem-psych-2.0.0-34.el7_6")) flag++;

  if (rpm_check(release:"RHEL7", cpu:"x86_64", reference:"rubygem-psych-2.0.0-34.el7_6")) flag++;

  if (rpm_check(release:"RHEL7", reference:"rubygem-rake-0.9.6-34.el7_6")) flag++;

  if (rpm_check(release:"RHEL7", reference:"rubygem-rdoc-4.0.0-34.el7_6")) flag++;

  if (rpm_check(release:"RHEL7", reference:"rubygems-2.0.14.1-34.el7_6")) flag++;

  if (rpm_check(release:"RHEL7", reference:"rubygems-devel-2.0.14.1-34.el7_6")) flag++;


  if (flag)
  {
    security_report_v4(
      port       : 0,
      severity   : SECURITY_HOLE,
      extra      : rpm_report_get() + redhat_report_package_caveat()
    );
    exit(0);
  }
  else
  {
    tested = pkg_tests_get();
    if (tested) audit(AUDIT_PACKAGE_NOT_AFFECTED, tested);
    else audit(AUDIT_PACKAGE_NOT_INSTALLED, "ruby / ruby-debuginfo / ruby-devel / ruby-doc / ruby-irb / etc");
  }
}