F5 Networks BIG-IP : cURL vulnerability (K63525058)

#%NASL_MIN_LEVEL 70300
##
# (C) Tenable Network Security, Inc.
#
# The descriptive text and package checks in this plugin were
# extracted from F5 Networks BIG-IP Solution K63525058.
#
# @NOAGENT@
##

include('deprecated_nasl_level.inc');
include('compat.inc');

if (description)
{
  script_id(154691);
  script_version("1.3");
  script_set_attribute(attribute:"plugin_modification_date", value:"2023/11/02");

  script_cve_id("CVE-2020-8284");
  script_xref(name:"IAVA", value:"2020-A-0581");

  script_name(english:"F5 Networks BIG-IP : cURL vulnerability (K63525058)");

  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 prior to tested version. It is, therefore, affected by
a vulnerability as referenced in the K63525058 advisory.

  - A malicious server can use the FTP PASV response to trick curl 7.73.0 and earlier into connecting back to
    a given IP address and port, and this way potentially make curl extract information about services that
    are otherwise private and not disclosed, for example doing port scanning and service banner extractions.
    (CVE-2020-8284)

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/K63525058");
  script_set_attribute(attribute:"solution", value:
"Upgrade to one of the non-vulnerable versions listed in the F5 Solution K63525058.");
  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:H/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:"cvss_score_source", value:"CVE-2020-8284");

  script_set_attribute(attribute:"exploitability_ease", value:"No known exploits are available");
  script_set_attribute(attribute:"exploit_available", value:"false");

  script_set_attribute(attribute:"vuln_publication_date", value:"2020/12/09");
  script_set_attribute(attribute:"patch_publication_date", value:"2021/02/19");
  script_set_attribute(attribute:"plugin_publication_date", value:"2021/10/28");

  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_acceleration_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_application_visibility_and_reporting");
  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_link_controller");
  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:/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) 2021-2023 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/hotfix", "Host/BIG-IP/modules", "Host/BIG-IP/version", "Settings/ParanoidReport");

  exit(0);
}


include('f5_func.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 ( isnull(get_kb_item('Host/BIG-IP/hotfix')) ) audit(AUDIT_KB_MISSING, 'Host/BIG-IP/hotfix');
if ( ! get_kb_item('Host/BIG-IP/modules') ) audit(AUDIT_KB_MISSING, 'Host/BIG-IP/modules');

if (report_paranoia < 2) audit(AUDIT_PARANOID);

var sol = 'K63525058';
var vmatrix = {
  'AFM': {
    'affected': [
      '16.0.0-16.0.1','15.1.0-15.1.2','14.1.0-14.1.3'
    ],
  },
  'AM': {
    'affected': [
      '16.0.0-16.0.1','15.1.0-15.1.2','14.1.0-14.1.3'
    ],
  },
  'APM': {
    'affected': [
      '16.0.0-16.0.1','15.1.0-15.1.2','14.1.0-14.1.3'
    ],
  },
  'ASM': {
    'affected': [
      '16.0.0-16.0.1','15.1.0-15.1.2','14.1.0-14.1.3'
    ],
  },
  'AVR': {
    'affected': [
      '16.0.0-16.0.1','15.1.0-15.1.2','14.1.0-14.1.3'
    ],
  },
  'DNS': {
    'affected': [
      '16.0.0-16.0.1','15.1.0-15.1.2','14.1.0-14.1.3'
    ],
  },
  'GTM': {
    'affected': [
      '16.0.0-16.0.1','15.1.0-15.1.2','14.1.0-14.1.3'
    ],
  },
  'LC': {
    'affected': [
      '16.0.0-16.0.1','15.1.0-15.1.2','14.1.0-14.1.3'
    ],
  },
  'LTM': {
    'affected': [
      '16.0.0-16.0.1','15.1.0-15.1.2','14.1.0-14.1.3'
    ],
  },
  'PEM': {
    'affected': [
      '16.0.0-16.0.1','15.1.0-15.1.2','14.1.0-14.1.3'
    ],
  }
};

if (bigip_is_affected(vmatrix:vmatrix, sol:sol))
{
  var extra = NULL;
  if (report_verbosity > 0) extra = bigip_report_get();
  security_report_v4(
      port       : 0,
      severity   : SECURITY_WARNING,
      extra      : extra
  );
}
else
{
  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');
}