Juniper Junos OS Vulnerability (JSA96459)

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

include('compat.inc');

if (description)
{
  script_id(234094);
  script_version("1.1");
  script_set_attribute(attribute:"plugin_modification_date", value:"2025/04/09");

  script_cve_id("CVE-2025-30649");
  script_xref(name:"JSA", value:"JSA96459");

  script_name(english:"Juniper Junos OS Vulnerability (JSA96459)");

  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 JSA96459
advisory.

  - An Improper Input Validation vulnerability in the syslog stream TCP transport of Juniper Networks Junos OS
    on MX240, MX480, and MX960 devices with MX-SPC3 Security Services Card allows an unauthenticated, network-
    based attacker, to send specific spoofed packets to cause a CPU Denial of Service (DoS) to the MX-SPC3
    SPUs. (CVE-2025-30649)

Note that Nessus has not tested for these issues but has instead relied only on the application's self-reported version
number.");
  # https://supportportal.juniper.net/s/article/2025-04-Security-Bulletin-Junos-OS-MX240-MX480-MX960-with-SPC3-An-attacker-sending-specific-packets-will-cause-a-CPU-utilization-DoS-CVE-2025-30649
  script_set_attribute(attribute:"see_also", value:"http://www.nessus.org/u?c25dcbdd");
  script_set_attribute(attribute:"solution", value:
"Apply the relevant Junos software release referenced in Juniper advisory JSA96459");
  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-2025-30649");

  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:"2025/04/09");
  script_set_attribute(attribute:"patch_publication_date", value:"2025/04/09");
  script_set_attribute(attribute:"plugin_publication_date", value:"2025/04/09");

  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) 2025 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 !~ "^(MX240|MX480|MX960|SPC3|with)")
{
  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':'22.2R3-S6', 'model':'^(MX240|MX480|MX960|SPC3|with)'},
  {'min_ver':'22.4', 'fixed_ver':'22.4R3-S4', 'model':'^(MX240|MX480|MX960|SPC3|with)'},
  {'min_ver':'23.2', 'fixed_ver':'23.2R2-S3', 'model':'^(MX240|MX480|MX960|SPC3|with)'},
  {'min_ver':'23.4', 'fixed_ver':'23.4R2-S4', 'model':'^(MX240|MX480|MX960|SPC3|with)'},
  {'min_ver':'24.2', 'fixed_ver':'24.2R1-S2', 'model':'^(MX240|MX480|MX960|SPC3|with)', 'fixed_display':'24.2R1-S2, 24.2R2'}
];

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);