Juniper Junos OS Vulnerability (JSA75757)

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

include('compat.inc');

if (description)
{
  script_id(193487);
  script_version("1.0");
  script_set_attribute(attribute:"plugin_modification_date", value:"2024/04/18");

  script_cve_id("CVE-2024-21616");
  script_xref(name:"JSA", value:"JSA75757");

  script_name(english:"Juniper Junos OS Vulnerability (JSA75757)");

  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 JSA75757
advisory.

  - An Improper Validation of Syntactic Correctness of Input vulnerability in Packet Forwarding Engine (PFE)
    of Juniper Networks Junos OS allows an unauthenticated, network-based attacker to cause Denial of Service
    (DoS). On all Junos OS MX Series and SRX Series platforms, when SIP ALG is enabled, and a specific SIP
    packet is received and processed, NAT IP allocation fails for genuine traffic, which causes Denial of
    Service (DoS). Continuous receipt of this specific SIP ALG packet will cause a sustained DoS condition.
    NAT IP usage can be monitored by running the following command. user@srx> show security nat resource-usage
    source-pool <source_pool_name> Pool name: source_pool_name .. Address Factor-index Port-range Used Avail
    Total Usage X.X.X.X 0 Single Ports 50258 52342 62464 96% <<<<< - Alg Ports 0 2048 2048 0% This issue
    affects: Juniper Networks Junos OS on MX Series and SRX Series * All versions earlier than 21.2R3-S6; *
    21.3 versions earlier than 21.3R3-S5; * 21.4 versions earlier than 21.4R3-S5; * 22.1 versions earlier than
    22.1R3-S4; * 22.2 versions earlier than 22.2R3-S3; * 22.3 versions earlier than 22.3R3-S1; * 22.4 versions
    earlier than 22.4R2-S2, 22.4R3; * 23.2 versions earlier than 23.2R1-S1, 23.2R2. (CVE-2024-21616)

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/2024-01-Security-Bulletin-Junos-OS-Processing-of-a-specific-SIP-packet-causes-NAT-IP-allocation-to-fail-CVE-2024-21616
  script_set_attribute(attribute:"see_also", value:"http://www.nessus.org/u?e07c18f1");
  script_set_attribute(attribute:"solution", value:
"Apply the relevant Junos software release referenced in Juniper advisory JSA75757");
  script_set_cvss_base_vector("CVSS2#AV:N/AC:L/Au:N/C:N/I:N/A:C");
  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-2024-21616");

  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:"2024/01/10");
  script_set_attribute(attribute:"patch_publication_date", value:"2024/01/10");
  script_set_attribute(attribute:"plugin_publication_date", value:"2024/04/18");

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

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

  script_copyright(english:"This script is Copyright (C) 2024 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':'0.0', 'fixed_ver':'21.2R3-S6', 'model':'^(MX|SRX)'},
  {'min_ver':'21.3', 'fixed_ver':'21.3R3-S5', 'model':'^(MX|SRX)'},
  {'min_ver':'21.4', 'fixed_ver':'21.4R3-S5', 'model':'^(MX|SRX)'},
  {'min_ver':'22.1', 'fixed_ver':'22.1R3-S4', 'model':'^(MX|SRX)'},
  {'min_ver':'22.2', 'fixed_ver':'22.2R3-S3', 'model':'^(MX|SRX)'},
  {'min_ver':'22.3', 'fixed_ver':'22.3R3-S1', 'model':'^(MX|SRX)'},
  {'min_ver':'22.4', 'fixed_ver':'22.4R2-S2', 'model':'^(MX|SRX)', 'fixed_display':'22.4R2-S2, 22.4R3'},
  {'min_ver':'23.2', 'fixed_ver':'23.2R1-S1', 'model':'^(MX|SRX)', 'fixed_display':'23.2R1-S1, 23.2R2'}
];

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_HOLE, port:0, extra:report);