Juniper Junos OS Vulnerability (JSA83004)

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

include('compat.inc');

if (description)
{
  script_id(202116);
  script_version("1.4");
  script_set_attribute(attribute:"plugin_modification_date", value:"2026/01/26");

  script_cve_id("CVE-2024-39543");
  script_xref(name:"JSA", value:"JSA83004");

  script_name(english:"Juniper Junos OS Vulnerability (JSA83004)");

  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 JSA83004
advisory.

  - A Buffer Copy without Checking Size of Input vulnerability in the routing protocol daemon (rpd) of Juniper
    Networks Junos OS and Juniper Networks Junos OS Evolved allows an unauthenticated, adjacent attacker to
    send specific RPKI-RTR packets resulting in a crash, creating a Denial of Service (DoS) condition.
    Continued receipt and processing of this packet will create a sustained Denial of Service (DoS) condition.
    (CVE-2024-39543)

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/2024-07-Security-Bulletin-Junos-OS-and-Junos-OS-Evolved-Receipt-of-a-large-RPKI-RTR-PDU-packet-can-cause-rpd-to-crash-CVE-2024-39543
  script_set_attribute(attribute:"see_also", value:"http://www.nessus.org/u?a956d7f5");
  script_set_attribute(attribute:"solution", value:
"Apply the relevant Junos software release referenced in Juniper advisory JSA83004");
  script_set_cvss_base_vector("CVSS2#AV:A/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: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:"cvss4_vector", value:"CVSS:4.0/AV:A/AC:L/AT:N/PR:N/UI:N/VC:N/VI:N/VA:H/SC:N/SI:N/SA:L");
  script_set_attribute(attribute:"cvss4_supplemental", value:"CVSS:4.0/R:A/U:Green");
  script_set_attribute(attribute:"cvss4_threat_vector", value:"CVSS:4.0/E:U");
  script_set_attribute(attribute:"cvss_score_source", value:"CVE-2024-39543");

  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:"2024/07/10");
  script_set_attribute(attribute:"patch_publication_date", value:"2024/07/10");
  script_set_attribute(attribute:"plugin_publication_date", value:"2024/07/10");

  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) 2024-2026 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');


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

var vuln_ranges = [
  {'min_ver':'0.0', 'fixed_ver':'21.2R3-S8'},
  {'min_ver':'0.0-EVO', 'fixed_ver':'21.2R3-S8-EVO'},
  {'min_ver':'21.4', 'fixed_ver':'21.4R3-S8'},
  {'min_ver':'21.4-EVO', 'fixed_ver':'21.4R3-S8-EVO'},
  {'min_ver':'22.2', 'fixed_ver':'22.2R3-S4'},
  {'min_ver':'22.2-EVO', 'fixed_ver':'22.2R3-S4-EVO'},
  {'min_ver':'22.3', 'fixed_ver':'22.3R3-S3'},
  {'min_ver':'22.3-EVO', 'fixed_ver':'22.3R3-S3-EVO'},
  {'min_ver':'22.4', 'fixed_ver':'22.4R3-S2'},
  {'min_ver':'22.4-EVO', 'fixed_ver':'22.4R3-S2-EVO'},
  {'min_ver':'23.2', 'fixed_ver':'23.2R2-S1'},
  {'min_ver':'23.2-EVO', 'fixed_ver':'23.2R2-S1-EVO'},
  {'min_ver':'23.4', 'fixed_ver':'23.4R2'},
  {'min_ver':'23.4-EVO', 'fixed_ver':'23.4R2-EVO'}
];

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);