Vulnerabilities > CVE-2007-6423 - Resource Management Errors vulnerability in Apache Http Server

#
# (C) Tenable Network Security, Inc.
#

include("compat.inc");

if (description)
{
  script_id(33477);
  script_cvs_date("Date: 2018/06/29 12:01:03");
  script_version("1.36");

  script_cve_id("CVE-2007-6420", "CVE-2008-2364", "CVE-2007-6423");
  script_bugtraq_id(27236, 29653);
  script_xref(name:"Secunia", value:"30621");

  script_name(english:"Apache 2.2.x < 2.2.9 Multiple Vulnerabilities (DoS, XSS)");
  script_summary(english:"Checks version in Server response header");
 
  script_set_attribute(attribute:"synopsis", value:
"The remote web server may be affected by several issues.");
  script_set_attribute(attribute:"description", value:
"According to its banner, the version of Apache 2.2.x running on the
remote host is prior to 2.2.9. It is, therefore, affected by multiple
vulnerabilities :

  - Improper handling of excessive forwarded interim 
    responses may cause denial of service conditions in 
    mod_proxy_http. (CVE-2008-2364)

  - A cross-site request forgery vulnerability in the 
    balancer-manager interface of mod_proxy_balancer.
    (CVE-2007-6420)

Note that the remote web server may not actually be affected by these
vulnerabilities. Nessus did not try to determine whether the affected
modules are in use or to check for the issues themselves.");
  script_set_attribute(attribute:"see_also", value:"https://archive.apache.org/dist/httpd/CHANGES_2.2");
  script_set_attribute(attribute:"see_also", value:"http://httpd.apache.org/security/vulnerabilities_22.html");
  script_set_attribute(attribute:"solution", value:
"Upgrade to Apache version 2.2.9 or later. Alternatively, ensure that
the affected modules are not in use.");
  script_set_cvss_base_vector("CVSS2#AV:N/AC:M/Au:N/C:N/I:P/A:N");
  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:N/I:L/A:N");
  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:"exploit_available", value:"false");
  script_cwe_id(352, 399);

  script_set_attribute(attribute:"plugin_publication_date", value:"2008/07/11");

  script_set_attribute(attribute:"plugin_type", value: "remote");
  script_set_attribute(attribute:"cpe", value:"cpe:/a:apache:http_server");
  script_end_attributes();

  script_category(ACT_GATHER_INFO);
  script_family(english:"Web Servers");

  script_copyright(english:"This script is Copyright (C) 2008-2018 Tenable Network Security, Inc.");

  script_dependencies("apache_http_version.nasl");
  script_require_keys("installed_sw/Apache");
  script_require_ports("Services/www", 80);

  exit(0);
}

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

get_install_count(app_name:"Apache", exit_if_zero:TRUE);
port = get_http_port(default:80);
install = get_single_install(app_name:"Apache", port:port, exit_if_unknown_ver:TRUE);

# Check if we could get a version first, then check if it was
# backported
version = get_kb_item_or_exit('www/apache/'+port+'/version', exit_code:1);
backported = get_kb_item_or_exit('www/apache/'+port+'/backported', exit_code:1);

if (report_paranoia < 2 && backported) audit(AUDIT_BACKPORT_SERVICE, port, "Apache");
source = get_kb_item_or_exit('www/apache/'+port+'/source', exit_code:1);

# Check if the version looks like either ServerTokens Major/Minor
# was used
if (version =~ '^2(\\.2)?$') exit(1, "The banner from the Apache server listening on port "+port+" - "+source+" - is not granular enough to make a determination.");
if (version !~ "^\d+(\.\d+)*$") exit(1, "The version of Apache listening on port " + port + " - " + version + " - is non-numeric and, therefore, cannot be used to make a determination.");
if (version =~ '^2\\.2' && ver_compare(ver:version, fix:'2.2.9') == -1)
{
  set_kb_item(name:"www/"+port+"/XSS", value:TRUE);
  if (report_verbosity > 0)
  {
    report = 
      '\n  Version source    : ' + source +
      '\n  Installed version : ' + version +
      '\n  Fixed version     : 2.2.9\n';
    security_warning(port:port, extra:report);
  }
  else security_warning(port);
  exit(0);
}
else exit(0, "Apache "+version+" is listening on port "+port+" and is not affected.");