Juniper Junos OS Vulnerability (JSA11192)

#%NASL_MIN_LEVEL 70300
##
# (C) Tenable Network Security, Inc.
##

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

if (description)
{
  script_id(151632);
  script_version("1.5");
  script_set_attribute(attribute:"plugin_modification_date", value:"2023/07/20");

  script_cve_id("CVE-2021-0290");
  script_xref(name:"JSA", value:"JSA11192");
  script_xref(name:"IAVA", value:"2021-A-0324-S");

  script_name(english:"Juniper Junos OS Vulnerability (JSA11192)");

  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 Junos OS installed on the remote host is affected by a vulnerability as referenced in the JSA11192
advisory.

  - Improper Handling of Exceptional Conditions in Ethernet interface frame processing of Juniper Networks
    Junos OS allows an attacker to send specially crafted frames over the local Ethernet segment, causing the
    interface to go into a down state, resulting in a Denial of Service (DoS) condition. The interface does
    not recover on its own and the FPC must be reset manually. Continued receipt and processing of these
    frames will create a sustained Denial of Service (DoS) condition. (CVE-2021-0290)

Note that Nessus has not tested for this issue but has instead relied only on the application's self-reported version
number.");
  # https://supportportal.juniper.net/s/article/2021-07-Security-Bulletin-Junos-OS-MX-Series-EX9200-Series-SRX4600-Ethernet-interface-vulnerable-to-specially-crafted-frames-CVE-2021-0290
  script_set_attribute(attribute:"see_also", value:"http://www.nessus.org/u?4ff16e2a");
  script_set_attribute(attribute:"solution", value:
"Apply the relevant Junos software release referenced in Juniper advisory JSA11192");
  script_set_cvss_base_vector("CVSS2#AV:A/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:A/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-2021-0290");

  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:"2021/07/14");
  script_set_attribute(attribute:"patch_publication_date", value:"2021/07/14");
  script_set_attribute(attribute:"plugin_publication_date", value:"2021/07/14");

  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) 2021-2023 and is owned by Tenable, Inc. or an Affiliate thereof.");

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

  exit(0);
}

include('junos.inc');

var model = get_kb_item_or_exit('Host/Juniper/model');
if (model !~ "^(EX92|MX|SRX4600)")
{
  audit(AUDIT_DEVICE_NOT_VULN, model);
}

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

var vuln_ranges = [
  {'min_ver':'16.1', 'fixed_ver':'16.1R7-S7', 'model':'^MX'},
  {'min_ver':'17.3', 'fixed_ver':'17.3R3-S8', 'model':'^MX'},
  {'min_ver':'17.4', 'fixed_ver':'17.4R2-S11', 'model':'^(MX|SRX4600)'},
  {'min_ver':'17.4R3', 'fixed_ver':'17.4R3-S1', 'model':'^(MX|SRX4600)'},
  {'min_ver':'18.1', 'fixed_ver':'18.1R3-S10', 'model':'^(EX92|MX|SRX4600)'},
  {'min_ver':'18.2', 'fixed_ver':'18.2R3-S3', 'model':'^(EX92|MX|SRX4600)'},
  {'min_ver':'18.3', 'fixed_ver':'18.3R3-S1', 'model':'^(EX92|MX|SRX4600)'},
  {'min_ver':'18.4', 'fixed_ver':'18.4R2-S3', 'model':'^(EX92|MX|SRX4600)', 'fixed_display':'18.4R2-S3, 18.4R3'},
  {'min_ver':'19.1', 'fixed_ver':'19.1R2-S1', 'model':'^(EX92|MX|SRX4600)', 'fixed_display':'19.1R2-S1, 19.1R3'},
  {'min_ver':'19.2', 'fixed_ver':'19.2R1-S3', 'model':'^(EX92|MX|SRX4600)', 'fixed_display':'19.2R1-S3, 19.2R2'},
  {'min_ver':'19.3', 'fixed_ver':'19.3R2', 'model':'^(EX92|MX|SRX4600)'}
];

var fix = junos_compare_range(target_version:ver, vuln_ranges:vuln_ranges);
if (empty_or_null(fix)) audit(AUDIT_INST_VER_NOT_VULN, 'Junos OS', ver);
var report = get_report(ver:ver, fix:fix);
security_report_v4(severity:SECURITY_NOTE, port:0, extra:report);