Vulnerabilities > CVE-2012-3502 - Information Exposure vulnerability in Apache Http Server 2.4.0/2.4.1/2.4.2

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

include("compat.inc");

if (description)
{
  script_id(61644);
  script_version("1.18");
  script_cvs_date("Date: 2018/11/15 20:50:25");

  script_cve_id("CVE-2012-2687", "CVE-2012-3502");
  script_bugtraq_id(55131);

  script_name(english:"Apache 2.4.x < 2.4.3 Multiple Vulnerabilities");
  script_summary(english:"Checks version in Server response header");
 
 script_set_attribute(attribute:"synopsis", value:
"The remote web server is affected by multiple vulnerabilities.");
 script_set_attribute(attribute:"description", value:
"According to its banner, the version of Apache 2.4.x running on the
remote host is prior 2.4.3. It is, therefore, affected by the
following vulnerabilities :

  - An input validation error exists related to
    'mod_negotiation', 'Multiviews' and untrusted uploads
    that can allow cross-site scripting attacks.
    (CVE-2012-2687)

  - An error exists related to 'mod_proxy_ajp' and
    'mod_proxy_http' that can allow connections to remain
    open. This condition can allow information disclosure
    when combined with specially crafted requests.
    (CVE-2012-3502)

Note that Nessus did not actually test for these issues, but instead 
has relied on the version in the server's banner.");
  script_set_attribute(attribute:"see_also", value:"https://archive.apache.org/dist/httpd/CHANGES_2.4.3");
  script_set_attribute(attribute:"see_also", value:"http://httpd.apache.org/security/vulnerabilities_24.html");
  script_set_attribute(attribute:"see_also", value:"https://bz.apache.org/bugzilla/show_bug.cgi?id=53727");
  script_set_attribute(attribute:"solution", value:"Upgrade to Apache version 2.4.3 or later.");
  script_set_cvss_base_vector("CVSS2#AV:N/AC:M/Au:N/C:P/I:N/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:L/I:N/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(20, 74, 79, 442, 629, 711, 712, 722, 725, 750, 751, 800, 801, 809, 811, 864, 900, 928, 931, 990);

  script_set_attribute(attribute:"vuln_publication_date", value:"2012/06/13");
  script_set_attribute(attribute:"patch_publication_date", value:"2012/08/21");
  script_set_attribute(attribute:"plugin_publication_date", value:"2012/08/23");

  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) 2012-2018 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("audit.inc");
include("global_settings.inc");
include("misc_func.inc");
include("http.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(\\.[34])?$') exit(1, "The banner from the Apache server listening on port "+port+" - "+source+" - is not granular enough to make a determination.");

# This plugin is only concerned with Apache 2.4 (and its associated development branch).
if (version !~ "^2\.[34][^0-9]") exit(0, "The version of Apache listening on port "+port+" is "+version+", not 2.4.x.");

fixed_ver = '2.4.3';
if (ver_compare(ver:version, fix:fixed_ver) == -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     : ' + fixed_ver + '\n';
    security_warning(port:port, extra:report);
  }
  else security_warning(port);
  exit(0);
}
else audit(AUDIT_LISTEN_NOT_VULN, "Apache", port, version);