Juniper Junos BGP DoS (JSA11024)

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

include('compat.inc');

if (description)
{
  script_id(140467);
  script_version("1.3");
  script_set_attribute(attribute:"plugin_modification_date", value:"2021/06/03");

  script_cve_id("CVE-2020-1640");
  script_xref(name:"JSA", value:"JSA11024");
  script_xref(name:"IAVA", value:"2020-A-0320-S");

  script_name(english:"Juniper Junos BGP DoS (JSA11024)");

  script_set_attribute(attribute:"synopsis", value:
"The remote device is missing a vendor-supplied security patch.");
  script_set_attribute(attribute:"description", value:
"According to the self reported version of Junos OS on the remote device it is affected by a denial of service
vulnerability as referenced in the JSA11024 advisory.

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://kb.juniper.net/JSA11024");
  script_set_attribute(attribute:"solution", value:
"Apply the relevant Junos software release referenced in Juniper advisory JSA11024");
  script_set_cvss_base_vector("CVSS2#AV:N/AC:L/Au:N/C:N/I:N/A:P");
  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:N/A:H");
  script_set_cvss3_temporal_vector("CVSS:3.0/E:U/RL:O/RC:C");
  script_set_attribute(attribute:"cvss_score_source", value:"CVE-2020-1640");

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

  script_set_attribute(attribute:"vuln_publication_date", value:"2020/07/08");
  script_set_attribute(attribute:"patch_publication_date", value:"2020/07/08");
  script_set_attribute(attribute:"plugin_publication_date", value:"2020/09/10");

  script_set_attribute(attribute:"plugin_type", value:"combined");
  script_set_attribute(attribute:"cpe", value:"cpe:/o:juniper:junos");
  script_set_attribute(attribute:"stig_severity", value:"I");
  script_end_attributes();

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

  script_copyright(english:"This script is Copyright (C) 2020-2021 and is owned by Tenable, Inc. or an Affiliate thereof.");

  script_dependencies("junos_version.nasl");
  script_require_keys("Host/Juniper/JUNOS/Version");

  exit(0);
}

include('junos.inc');

ver = get_kb_item_or_exit('Host/Juniper/JUNOS/Version');

vuln_ranges = [
  {'min_ver':'16.1R7-S6',   'fixed_ver':'16.1R7-S8'},
  {'min_ver':'17.3R2-S5',   'fixed_ver':'17.3R3-S8'},
  {'min_ver':'17.4R2-S7',   'fixed_ver':'17.4R2-S11'},
  {'min_ver':'17.4R3',      'fixed_ver':'17.4R3-S2'},
  {'min_ver':'18.1R3-S7',   'fixed_ver':'18.1R3-S10'},
  {'min_ver':'18.2R2-S6',   'fixed_ver':'18.2R2-S7'},
  {'min_ver':'18.2R3-S2',   'fixed_ver':'18.2R3-S5'},
  {'min_ver':'18.3R1-S6',   'fixed_ver':'18.3R2-S4'},
  {'min_ver':'18.3R3',      'fixed_ver':'18.3R3-S2'},
  {'min_ver':'18.4R1-S5',   'fixed_ver':'18.4R1-S7'},
  {'min_ver':'18.4R2-S4',   'fixed_ver':'18.4R2-S5'},
  {'min_ver':'18.4R3',      'fixed_ver':'18.4R3-S3'},
  {'min_ver':'19.1R1-S3',   'fixed_ver':'19.1R1-S5'},
  {'min_ver':'19.1R2',      'fixed_ver':'19.1R2-S2'},
  {'min_ver':'19.2R1-S2',   'fixed_ver':'19.2R1-S5'},
  {'min_ver':'19.3R2',      'fixed_ver':'19.3R2-S3'},
  {'min_ver':'19.4R1',      'fixed_ver':'19.4R1-S2'},
  {'min_ver':'20.1R1',      'fixed_ver':'20.1R1-S1'},
  {'min_ver':'18.2X75-D12', 'fixed_ver':'18.2X75-D32'},
  {'min_ver':'18.2X75-D51', 'fixed_ver':'18.2X75-D52'},
  {'min_ver':'18.2X75-D411','fixed_ver':'18.2X75-D420'}
];

fix = junos_compare_range(target_version:ver, vuln_ranges:vuln_ranges);

if (!isnull(fix))
{
  report = get_report(ver:ver, fix:fix);
  security_report_v4(severity:SECURITY_WARNING, port:0, extra:report);
}