Juniper Junos OS Vulnerability (JSA11284)

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

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

if (description)
{
  script_id(156694);
  script_version("1.5");
  script_set_attribute(attribute:"plugin_modification_date", value:"2023/07/20");

  script_cve_id("CVE-2022-22178");
  script_xref(name:"JSA", value:"JSA11284");
  script_xref(name:"IAVA", value:"2022-A-0022");

  script_name(english:"Juniper Junos OS Vulnerability (JSA11284)");

  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 JSA11284
advisory.

  - A Stack-based Buffer Overflow vulnerability in the flow processing daemon (flowd) of Juniper Networks
    Junos OS on MX Series and SRX series allows an unauthenticated networked attacker to cause a flowd crash
    and thereby a Denial of Service (DoS). Continued receipt of these specific packets will cause a sustained
    Denial of Service condition. This issue can be triggered by a specific Session Initiation Protocol (SIP)
    invite packet if the SIP ALG is enabled. Due to this, the PIC will be rebooted and all traffic that
    traverses the PIC will be dropped. This issue affects: Juniper Networks Junos OS 20.4 versions prior to
    20.4R3-S2; 21.1 versions prior to 21.1R2-S1, 21.1R3; 21.2 versions prior to 21.2R2; 21.3 versions prior to
    21.3R2. This issue does not affect Juniper Networks Junos OS versions prior to 20.4R1. (CVE-2022-22178)

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/2022-01-Security-Bulletin-MX-Series-and-SRX-series-Flowd-core-observed-if-the-SIP-ALG-is-enabled-and-a-specific-Session-Initiation-Protocol-SIP-packet-is-received-CVE-2022-22178
  script_set_attribute(attribute:"see_also", value:"http://www.nessus.org/u?bac2002c");
  script_set_attribute(attribute:"solution", value:
"Apply the relevant Junos software release referenced in Juniper advisory JSA11284");
  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-2022-22178");

  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:"2022/01/12");
  script_set_attribute(attribute:"patch_publication_date", value:"2022/01/12");
  script_set_attribute(attribute:"plugin_publication_date", value:"2022/01/12");

  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) 2022-2023 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 !~ "^(MX|SRX)")
{
  audit(AUDIT_DEVICE_NOT_VULN, model);
}

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

var vuln_ranges = [
  {'min_ver':'20.4', 'fixed_ver':'20.4R3-S2', 'model':'^(MX|SRX)'},
  {'min_ver':'21.1', 'fixed_ver':'21.1R2-S1', 'model':'^(MX|SRX)', 'fixed_display':'21.1R2-S1, 21.1R3'},
  {'min_ver':'21.2', 'fixed_ver':'21.2R2', 'model':'^(MX|SRX)'},
  {'min_ver':'21.3', 'fixed_ver':'21.3R2', 'model':'^(MX|SRX)'}
];

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_WARNING, port:0, extra:report);