IBM HTTP Server mod_proxy Interim Responses DoS Vulnerability

##############################################################################
# OpenVAS Vulnerability Test
# $Id: secpod_ibmhttpserver_mod_proxy_dos_900222.nasl 5785 2017-03-30 09:19:35Z cfi $
# Description: IBM HTTP Server mod_proxy Interim Responses DoS Vulnerability
#
# Authors:
# Veerendra GG <[email protected]>
#
# Copyright:
# Copyright (C) 2008 SecPod, http://www.secpod.com
#
# 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_impact = "A remote/local user can cause denial of service
 Impact Level : Application";

tag_solution = "Update to Fix Pack 19
 http://www-01.ibm.com/support/docview.wss?uid=swg27008517

 *****
 NOTE : Ignore this warning if above mentioned patch is applied already.
 *****";

tag_affected = "IBM HTTP Server versions prior to 6.1.0.19.";

tag_insight = "Issue is due to an error in the ap_proxy_http_process_response()
        function in mod_proxy_http.c in the mod_proxy module when processing 
        large number of interim responses to the client, which could consume 
        all available memory resources.";


tag_summary = "This host is running IBM HTTP Server, which is prone to Denial of
 Service Vulnerability.";

if(description)
{
 script_id(900222);
 script_version("$Revision: 5785 $");
 script_tag(name:"last_modification", value:"$Date: 2017-03-30 11:19:35 +0200 (Thu, 30 Mar 2017) $");
 script_tag(name:"creation_date", value:"2008-09-25 09:10:39 +0200 (Thu, 25 Sep 2008)");
 script_bugtraq_id(29653);
 script_cve_id("CVE-2008-2364");
 script_copyright("Copyright (C) 2008 SecPod");
 script_tag(name:"cvss_base", value:"5.0");
 script_tag(name:"cvss_base_vector", value:"AV:N/AC:L/Au:N/C:N/I:N/A:P");
 script_category(ACT_GATHER_INFO);
 script_tag(name:"qod_type", value:"remote_banner");
 script_family("Denial of Service");
 script_name("IBM HTTP Server mod_proxy Interim Responses DoS Vulnerability");

 script_dependencies("gb_get_http_banner.nasl");
 script_require_ports("Services/www", 80, 8880, 8008);
 script_xref(name : "URL" , value : "http://secunia.com/Advisories/31904/");
 script_xref(name : "URL" , value : "http://xforce.iss.net/xforce/xfdb/42987");
 script_xref(name : "URL" , value : "http://www-01.ibm.com/support/docview.wss?rs=177&context=SSEQTJ&uid=swg21173021");
 script_tag(name : "summary" , value : tag_summary);
 script_tag(name : "insight" , value : tag_insight);
 script_tag(name : "affected" , value : tag_affected);
 script_tag(name : "solution" , value : tag_solution);
 script_tag(name : "impact" , value : tag_impact);
 script_mandatory_keys("IBM_HTTP_Server/banner");
 exit(0);
}

include("http_func.inc");

port = get_http_port(default:80);

ibmWebSer = get_http_banner(port:port);
 
# Check for IBM HTTP Server Version
if(egrep(pattern:"Server: IBM_HTTP_Server.*", string:ibmWebSer)) {
  if(egrep(pattern:"IBM_HTTP_Server/([0-5]\..*|6\.[01])[^.0-9]", string:ibmWebSer)) {
    security_message(port);
    exit(0);
  }
}