Vulnerabilities > CVE-2018-11769 - Unspecified vulnerability in Apache Couchdb

#
# (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(112052);
  script_version("1.3");
  script_cvs_date("Date: 2018/11/10 11:49:47");

  script_cve_id("CVE-2018-11769");

  script_name(english:"FreeBSD : couchdb -- administrator privilege escalation (9b19b6df-a4be-11e8-9366-0028f8d09152)");
  script_summary(english:"Checks for updated package in pkg_info output");

  script_set_attribute(
    attribute:"synopsis", 
    value:"The remote FreeBSD host is missing a security-related update."
  );
  script_set_attribute(
    attribute:"description", 
    value:
"Apache CouchDB PMC reports :

Database Administrator could achieve privilege escalation to the
account that CouchDB runs under, by abusing insufficient validation in
the HTTP API, escaping security controls implemented in previous
releases."
  );
  script_set_attribute(
    attribute:"see_also",
    value:"http://docs.couchdb.org/en/stable/cve/2018-11769.html"
  );
  # https://vuxml.freebsd.org/freebsd/9b19b6df-a4be-11e8-9366-0028f8d09152.html
  script_set_attribute(
    attribute:"see_also",
    value:"http://www.nessus.org/u?838c1121"
  );
  script_set_attribute(attribute:"solution", value:"Update the affected package.");
  script_set_cvss_base_vector("CVSS2#AV:N/AC:L/Au:S/C:C/I:C/A:C");
  script_set_cvss3_base_vector("CVSS:3.0/AV:N/AC:L/PR:H/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:couchdb");
  script_set_attribute(attribute:"cpe", value:"cpe:/o:freebsd:freebsd");

  script_set_attribute(attribute:"vuln_publication_date", value:"2018/06/05");
  script_set_attribute(attribute:"patch_publication_date", value:"2018/08/08");
  script_set_attribute(attribute:"plugin_publication_date", value:"2018/08/22");
  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:"couchdb<2.2.0,2")) 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.
#

include("compat.inc");

if (description)
{
  script_id(111967);
  script_version("1.5");
  script_set_attribute(attribute:"plugin_modification_date", value:"2020/05/29");

  script_cve_id("CVE-2018-11769");
  script_bugtraq_id(105046);
  script_xref(name:"IAVB", value:"2018-B-0099-S");

  script_name(english:"Apache CouchDB 1.x / 2.1.x <= 2.1.2 Privilege Escalation");
  script_summary(english:"Does a paranoid banner check on the web server");

  script_set_attribute(attribute:"synopsis", value:
"The remote database server is potentially affected by a privilege 
escalation vulnerability.");
  script_set_attribute(attribute:"description", value:
"According to its banner, the version of CouchDB running on the remote
host is 1.x or 2.1.x prior to 2.1.2. It is, therefore, potentially 
affected by a privilege escalation which could allow a CouchDB 
administrative user to gain remote code execution on the underlying
operating system. 

Note that Nessus did not actually test for these flaws but instead, has
relied on the version in CouchDB's banner.");
  script_set_attribute(attribute:"see_also", value:"http://docs.couchdb.org/en/stable/cve/2018-11769.html");
  script_set_attribute(attribute:"solution", value:
"Upgrade to CouchDB 2.2.0 or later.");
  script_set_cvss_base_vector("CVSS2#AV:N/AC:L/Au:S/C:C/I:C/A:C");
  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:H/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:"cvss_score_source", value:"CVE-2018-11769");

  script_set_attribute(attribute:"exploitability_ease", value:"No known exploits are available");

  script_set_attribute(attribute:"vuln_publication_date", value:"2018/08/08");
  script_set_attribute(attribute:"patch_publication_date", value:"2018/08/08");
  script_set_attribute(attribute:"plugin_publication_date", value:"2018/08/17");

  script_set_attribute(attribute:"potential_vulnerability", value:"true");
  script_set_attribute(attribute:"plugin_type", value:"remote");
  script_set_attribute(attribute:"cpe", value:"cpe:/a:apache:couchdb");
  script_set_attribute(attribute:"stig_severity", value:"I");
  script_end_attributes();

  script_category(ACT_GATHER_INFO);
  script_family(english:"Databases");

  script_copyright(english:"This script is Copyright (C) 2018-2020 and is owned by Tenable, Inc. or an Affiliate thereof.");

  script_dependencies("couchdb_detect.nasl");
  script_require_keys("Settings/ParanoidReport", "www/couchdb");
  script_require_ports("Services/www", 5984, 6984);

  exit(0);
}

include("audit.inc");
include("global_settings.inc");
include("misc_func.inc");
include("http.inc");
include("vcf.inc");

port = get_http_port(default:5984);
app = vcf::get_app_info(app:"couchdb", webapp:TRUE, port:port);

if (report_paranoia < 2) audit(AUDIT_PARANOID);

constraints = [{"min_version" : "1.0", "max_version": "2.1.2", "fixed_version" : "2.2.0"}];

vcf::check_version_and_report(app_info:app, constraints:constraints, severity:SECURITY_HOLE, strict:FALSE);