F5 Networks BIG-IP : Multiple Vulnerabilities (K000137353, K000137365)

#%NASL_MIN_LEVEL 80900
##
# (C) Tenable, Inc.
# @NOAGENT@
##

include('compat.inc');

if (description)
{
  script_id(183976);
  script_version("1.8");
  script_set_attribute(attribute:"plugin_modification_date", value:"2023/11/09");

  script_cve_id("CVE-2023-46747", "CVE-2023-46748");
  script_xref(name:"CEA-ID", value:"CEA-2023-0056");
  script_xref(name:"IAVA", value:"2023-A-0537");
  script_xref(name:"CISA-KNOWN-EXPLOITED", value:"2023/11/21");
  script_xref(name:"IAVA", value:"2023-A-0591");

  script_name(english:"F5 Networks BIG-IP : Multiple Vulnerabilities (K000137353, K000137365)");

  script_set_attribute(attribute:"synopsis", value:
"The remote device is missing a vendor-supplied security patch.");
  script_set_attribute(attribute:"description", value:
"The version of F5 Networks BIG-IP installed on the remote host is potentially affected by multiple vulnerabilities as
referenced in the K000137353 and K000137365 advisories:

  - K000137353: BIG-IP Configuration utility unauthenticated remote code execution vulnerability (CVE-2023-46747)

  - K000137365: BIG-IP Configuration utility authenticated SQL injection vulnerability (CVE-2023-46748)

Note that Nessus has not tested for this issue but has instead relied only on the application's self-reported version
number.");
  script_set_attribute(attribute:"see_also", value:"https://my.f5.com/manage/s/article/K000137353");
  script_set_attribute(attribute:"see_also", value:"https://my.f5.com/manage/s/article/K000137365");
  # https://www.praetorian.com/blog/refresh-compromising-f5-big-ip-with-request-smuggling-cve-2023-46747/
  script_set_attribute(attribute:"see_also", value:"http://www.nessus.org/u?a8c050ad");
  script_set_attribute(attribute:"solution", value:
"Upgrade to one of the non-vulnerable versions listed in the F5 Networks K000137353 or K000137365 security advisories.");
  script_set_cvss_base_vector("CVSS2#AV:N/AC:L/Au:N/C:C/I:C/A:C");
  script_set_cvss_temporal_vector("CVSS2#E:F/RL:OF/RC:C");
  script_set_cvss3_base_vector("CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H");
  script_set_cvss3_temporal_vector("CVSS:3.0/E:F/RL:O/RC:C");
  script_set_attribute(attribute:"cvss_score_source", value:"CVE-2023-46747");

  script_set_attribute(attribute:"exploitability_ease", value:"Exploits are available");
  script_set_attribute(attribute:"exploit_available", value:"true");
  script_set_attribute(attribute:"exploit_framework_core", value:"true");
  script_set_attribute(attribute:"metasploit_name", value:'F5 BIG-IP TMUI AJP Smuggling RCE');
  script_set_attribute(attribute:"exploit_framework_metasploit", value:"true");

  script_set_attribute(attribute:"vuln_publication_date", value:"2023/10/26");
  script_set_attribute(attribute:"patch_publication_date", value:"2023/10/26");
  script_set_attribute(attribute:"plugin_publication_date", value:"2023/10/27");

  script_set_attribute(attribute:"potential_vulnerability", value:"true");
  script_set_attribute(attribute:"plugin_type", value:"local");
  script_set_attribute(attribute:"cpe", value:"cpe:/a:f5:big-ip_access_policy_manager");
  script_set_attribute(attribute:"cpe", value:"cpe:/a:f5:big-ip_advanced_firewall_manager");
  script_set_attribute(attribute:"cpe", value:"cpe:/a:f5:big-ip_application_security_manager");
  script_set_attribute(attribute:"cpe", value:"cpe:/a:f5:big-ip_domain_name_system");
  script_set_attribute(attribute:"cpe", value:"cpe:/a:f5:big-ip_global_traffic_manager");
  script_set_attribute(attribute:"cpe", value:"cpe:/a:f5:big-ip_local_traffic_manager");
  script_set_attribute(attribute:"cpe", value:"cpe:/a:f5:big-ip_policy_enforcement_manager");
  script_set_attribute(attribute:"cpe", value:"cpe:/a:f5:big-ip_wan_optimization_manager");
  script_set_attribute(attribute:"cpe", value:"cpe:/h:f5:big-ip_protocol_security_manager");
  script_set_attribute(attribute:"cpe", value:"cpe:/h:f5:big-ip");
  script_set_attribute(attribute:"stig_severity", value:"I");
  script_end_attributes();

  script_category(ACT_GATHER_INFO);
  script_family(english:"F5 Networks Local Security Checks");

  script_copyright(english:"This script is Copyright (C) 2023 and is owned by Tenable, Inc. or an Affiliate thereof.");

  script_dependencies("f5_bigip_detect.nbin");
  script_require_keys("Host/local_checks_enabled", "Host/BIG-IP/modules", "Host/BIG-IP/version", "Settings/ParanoidReport");

  exit(0);
}

include('f5_func.inc');
include('local_detection_nix.inc');

if ( ! get_kb_item('Host/local_checks_enabled') ) audit(AUDIT_LOCAL_CHECKS_NOT_ENABLED);
var version = get_kb_item('Host/BIG-IP/version');
if ( ! version ) audit(AUDIT_OS_NOT, 'F5 Networks BIG-IP');
if ( ! get_kb_item('Host/BIG-IP/modules') ) audit(AUDIT_KB_MISSING, 'Host/BIG-IP/modules');

# we can't check for the hotfix
if (report_paranoia < 2) audit(AUDIT_PARANOID);

var sol = 'K000137353 or K000137365';

var all_modules = ['AFM', 'APM', 'ASM', 'DNS', 'GTM', 'LTM', 'PEM', 'PSM', 'WDM'];

var vuln_matrix = {};

foreach var module (all_modules) {
  vuln_matrix[module] = {
    'affected': [
      '17.1.0.0-17.1.0.3', '16.1.0.0-16.1.4.1', '15.1.0.0-15.1.10.2', '14.1.0.0-14.1.5.6', '13.1.0.0-13.1.5.1'
    ],
    'unaffected': [
      '17.1.0.3.0.75.4', '16.1.4.1.0.50.5', '15.1.10.2.0.44.2', '14.1.5.6.0.10.6', '13.1.5.1.0.20.2'
    ]
  };
};

function mitigation_is_applied()
{
  ldnix::init_plugin();
  info_connect(exit_on_fail:TRUE);

  var cmd = "grep -m1 -ioE '(required)?secret.*' /config/httpd/conf.d/proxy_ajp.conf /etc/tomcat/server.xml";
  var out = ldnix::run_cmd_template_wrapper(template:cmd);

  if (info_t == INFO_SSH) ssh_close_connection();

  var proxy_secret = pregmatch(pattern:'/config/httpd/conf.d/proxy_ajp.conf:secret=([0-9a-fA-F]+)', string:out);
  var tomcat_secret = pregmatch(pattern:'/etc/tomcat/server.xml:requiredSecret="([0-9a-fA-F]+)', string:out);

  if (empty_or_null(proxy_secret) || empty_or_null(proxy_secret[1]) || empty_or_null(tomcat_secret) || empty_or_null(tomcat_secret[1]))
    return FALSE;
 
  proxy_secret = proxy_secret[1];
  tomcat_secret = tomcat_secret[1];

  if (len(proxy_secret) != 40 || len(tomcat_secret) != 40)
    return FALSE;
  
  if (proxy_secret == tomcat_secret)
    return TRUE;
  else
    return FALSE;
}

if (bigip_is_affected(vmatrix:vuln_matrix, sol:sol))
{
  if (mitigation_is_applied())
    audit(AUDIT_OS_CONF_NOT_VULN, 'F5 Networks BIG-IP');

  security_report_v4(
      port       : 0,
      severity   : SECURITY_HOLE,
      extra      : bigip_report_get()
  );
  exit(0);
}

var tested = bigip_get_tested_modules();
var audit_extra = 'For BIG-IP module(s) ' + tested + ',';
if (tested) audit(AUDIT_INST_VER_NOT_VULN, audit_extra, version);
else audit(AUDIT_HOST_NOT, 'running any of the affected modules');