CouchDB Message Digest Verification Security Bypass Vulnerability

###############################################################################
# OpenVAS Vulnerability Test
# $Id: gb_couchdb_39116.nasl 5306 2017-02-16 09:00:16Z teissa $
#
# CouchDB Message Digest Verification Security Bypass Vulnerability
#
# Authors:
# Michael Meyer
#
# Copyright:
# Copyright (c) 2010 Greenbone Networks GmbH
#
# This program is free software; you can redistribute it and/or modify
# it under the terms of the GNU General Public License version 2
# (or any later version), as published by the Free Software Foundation.
#
# This program is distributed in the hope that it will be useful,
# but WITHOUT ANY WARRANTY; without even the implied warranty of
# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
# GNU General Public License for more details.
#
# You should have received a copy of the GNU General Public License
# along with this program; if not, write to the Free Software
# Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
###############################################################################

tag_summary = "CouchDB is prone to a security-bypass vulnerability because it
compares message digests using a variable time algorithm.

Successfully exploiting this issue allows an attacker to determine if
a forged digest is partially correct; repeated attacks will allow them
to determine specific, legitimate digests.

Versions prior to CouchDB 0.11 are vulnerable.";

tag_solution = "The vendor has released updates. Please see the references for
details.";

if (description)
{
 script_id(100572);
 script_version("$Revision: 5306 $");
 script_tag(name:"last_modification", value:"$Date: 2017-02-16 10:00:16 +0100 (Thu, 16 Feb 2017) $");
 script_tag(name:"creation_date", value:"2010-04-12 18:40:45 +0200 (Mon, 12 Apr 2010)");
 script_bugtraq_id(39116);
 script_cve_id("CVE-2010-0009");

 script_name("CouchDB Message Digest Verification Security Bypass Vulnerability");

 script_xref(name : "URL" , value : "http://www.securityfocus.com/bid/39116");
 script_xref(name : "URL" , value : "http://couchdb.apache.org/");

 script_tag(name:"cvss_base", value:"4.3");
 script_tag(name:"cvss_base_vector", value:"AV:N/AC:M/Au:N/C:P/I:N/A:N");
 script_tag(name:"qod_type", value:"remote_banner");
 script_category(ACT_GATHER_INFO);
 script_family("Databases");
 script_copyright("This script is Copyright (C) 2010 Greenbone Networks GmbH");
 script_dependencies("gb_couchdb_detect.nasl");
 script_require_ports("Services/www", 5984);
 script_tag(name : "solution" , value : tag_solution);
 script_tag(name : "summary" , value : tag_summary);
 exit(0);
}

     
include("http_func.inc");
include("http_keepalive.inc");
include("version_func.inc");

port = get_http_port(default:5984);
if(!get_port_state(port))exit(0);

if(!version = get_kb_item(string("couchdb/",port,"/version")))exit(0);

vers = version;

if(!isnull(vers) && vers >!< "unknown") {

  if(version_is_less(version: vers, test_version: "0.11")) {
      security_message(port:port);
      exit(0);
  }

}

exit(0);