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nessusThis script is Copyright (C) 2019-2024 and is owned by Tenable, Inc. or an Affiliate thereof.FREEBSD_PKG_F7FCB75CE53711E9863EB9B7AF01BA9E.NASL
HistoryOct 03, 2019 - 12:00 a.m.

FreeBSD : ruby -- multiple vulnerabilities (f7fcb75c-e537-11e9-863e-b9b7af01ba9e)

2019-10-0300:00:00
This script is Copyright (C) 2019-2024 and is owned by Tenable, Inc. or an Affiliate thereof.
www.tenable.com
96
freebsd
ruby
vulnerabilities
nul injection
regular expression denial of service
http response splitting
code injection

CVSS2

7.8

Attack Vector

NETWORK

Attack Complexity

LOW

Authentication

NONE

Confidentiality Impact

NONE

Integrity Impact

NONE

Availability Impact

COMPLETE

AV:N/AC:L/Au:N/C:N/I:N/A:C

CVSS3

8.1

Attack Vector

NETWORK

Attack Complexity

HIGH

Privileges Required

NONE

User Interaction

NONE

Scope

UNCHANGED

Confidentiality Impact

HIGH

Integrity Impact

HIGH

Availability Impact

HIGH

CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:H

AI Score

7.4

Confidence

High

EPSS

0.011

Percentile

84.5%

Ruby news :

This release includes security fixes. Please check the topics below for details.

CVE-2019-15845: A NUL injection vulnerability of File.fnmatch and File.fnmatch?

A NUL injection vulnerability of Ruby built-in methods (File.fnmatch and File.fnmatch?) was found. An attacker who has the control of the path pattern parameter could exploit this vulnerability to make path matching pass despite the intention of the program author.

CVE-2019-16201: Regular Expression Denial of Service vulnerability of WEBrick’s Digest access authentication

Regular expression denial of service vulnerability of WEBrick’s Digest authentication module was found. An attacker can exploit this vulnerability to cause an effective denial of service against a WEBrick service.

CVE-2019-16254: HTTP response splitting in WEBrick (Additional fix)

There is an HTTP response splitting vulnerability in WEBrick bundled with Ruby.

CVE-2019-16255: A code injection vulnerability of Shell#[] and Shell#test

A code injection vulnerability of Shell#[] and Shell#test in a standard library (lib/shell.rb) was found.

#
# (C) Tenable Network Security, Inc.
#
# The descriptive text and package checks in this plugin were  
# extracted from the FreeBSD VuXML database :
#
# Copyright 2003-2020 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(129549);
  script_version("1.5");
  script_set_attribute(attribute:"plugin_modification_date", value:"2024/04/19");

  script_cve_id(
    "CVE-2019-15845",
    "CVE-2019-16201",
    "CVE-2019-16254",
    "CVE-2019-16255"
  );

  script_name(english:"FreeBSD : ruby -- multiple vulnerabilities (f7fcb75c-e537-11e9-863e-b9b7af01ba9e)");

  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 :

This release includes security fixes. Please check the topics below
for details.

CVE-2019-15845: A NUL injection vulnerability of File.fnmatch and
File.fnmatch?

A NUL injection vulnerability of Ruby built-in methods (File.fnmatch
and File.fnmatch?) was found. An attacker who has the control of the
path pattern parameter could exploit this vulnerability to make path
matching pass despite the intention of the program author.

CVE-2019-16201: Regular Expression Denial of Service vulnerability of
WEBrick's Digest access authentication

Regular expression denial of service vulnerability of WEBrick's Digest
authentication module was found. An attacker can exploit this
vulnerability to cause an effective denial of service against a
WEBrick service.

CVE-2019-16254: HTTP response splitting in WEBrick (Additional fix)

There is an HTTP response splitting vulnerability in WEBrick bundled
with Ruby.

CVE-2019-16255: A code injection vulnerability of Shell#[] and
Shell#test

A code injection vulnerability of Shell#[] and Shell#test in a
standard library (lib/shell.rb) was found.");
  script_set_attribute(attribute:"see_also", value:"https://www.ruby-lang.org/en/news/2019/10/01/ruby-2-6-5-released/");
  script_set_attribute(attribute:"see_also", value:"https://www.ruby-lang.org/en/news/2019/10/01/ruby-2-5-7-released/");
  script_set_attribute(attribute:"see_also", value:"https://www.ruby-lang.org/en/news/2019/10/01/ruby-2-4-8-released/");
  script_set_attribute(attribute:"see_also", value:"https://www.ruby-lang.org/en/news/2019/10/02/ruby-2-4-9-released/");
  # https://www.ruby-lang.org/en/news/2019/10/01/nul-injection-file-fnmatch-cve-2019-15845/
  script_set_attribute(attribute:"see_also", value:"http://www.nessus.org/u?54122b09");
  # https://www.ruby-lang.org/en/news/2019/10/01/webrick-regexp-digestauth-dos-cve-2019-16201/
  script_set_attribute(attribute:"see_also", value:"http://www.nessus.org/u?c8f5464f");
  # https://www.ruby-lang.org/en/news/2019/10/01/http-response-splitting-in-webrick-cve-2019-16254/
  script_set_attribute(attribute:"see_also", value:"http://www.nessus.org/u?8a9845f8");
  # https://www.ruby-lang.org/en/news/2019/10/01/code-injection-shell-test-cve-2019-16255/
  script_set_attribute(attribute:"see_also", value:"http://www.nessus.org/u?3b50fa79");
  # https://vuxml.freebsd.org/freebsd/f7fcb75c-e537-11e9-863e-b9b7af01ba9e.html
  script_set_attribute(attribute:"see_also", value:"http://www.nessus.org/u?3dacd927");
  script_set_attribute(attribute:"solution", value:
"Update the affected packages.");
  script_set_cvss_base_vector("CVSS2#AV:N/AC:M/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:N/AC:H/PR:N/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-2019-16255");

  script_set_attribute(attribute:"exploitability_ease", value:"Exploits are available");
  script_set_attribute(attribute:"exploit_available", value:"true");

  script_set_attribute(attribute:"vuln_publication_date", value:"2019/10/01");
  script_set_attribute(attribute:"patch_publication_date", value:"2019/10/02");
  script_set_attribute(attribute:"plugin_publication_date", value:"2019/10/03");

  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:"generated_plugin", value:"current");
  script_end_attributes();

  script_category(ACT_GATHER_INFO);
  script_family(english:"FreeBSD 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/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>=2.4.0,1<2.4.9,1")) flag++;
if (pkg_test(save_report:TRUE, pkg:"ruby>=2.5.0,1<2.5.7,1")) flag++;
if (pkg_test(save_report:TRUE, pkg:"ruby>=2.6.0,1<2.6.5,1")) flag++;

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

CVSS2

7.8

Attack Vector

NETWORK

Attack Complexity

LOW

Authentication

NONE

Confidentiality Impact

NONE

Integrity Impact

NONE

Availability Impact

COMPLETE

AV:N/AC:L/Au:N/C:N/I:N/A:C

CVSS3

8.1

Attack Vector

NETWORK

Attack Complexity

HIGH

Privileges Required

NONE

User Interaction

NONE

Scope

UNCHANGED

Confidentiality Impact

HIGH

Integrity Impact

HIGH

Availability Impact

HIGH

CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:H

AI Score

7.4

Confidence

High

EPSS

0.011

Percentile

84.5%