Juniper Junos OS Vulnerability (JSA100095)

#TRUSTED 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
#TRUST-RSA-SHA256 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
#%NASL_MIN_LEVEL 80900
##
# (C) Tenable, Inc.
##

include('compat.inc');

if (description)
{
  script_id(242693);
  script_version("1.1");
  script_set_attribute(attribute:"plugin_modification_date", value:"2025/07/25");

  script_cve_id("CVE-2025-52988");
  script_xref(name:"JSA", value:"JSA100095");
  script_xref(name:"IAVA", value:"2025-A-0510");

  script_name(english:"Juniper Junos OS Vulnerability (JSA100095)");

  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 JSA100095
advisory.

  - An Improper Neutralization of Special Elements used in an OS Command ('OS Command Injection')
    vulnerability in the CLI of Juniper Networks Junos OS and Junos OS Evolved allows a high privileged, local
    attacker to escalated their privileges to root. When a user provides specifically crafted arguments to the
    'request system logout' command, these will be executed as root on the shell, which can completely
    compromise the device. This issue affects: Junos OS: * all versions before 21.2R3-S9, * 21.4 versions
    before 21.4R3-S8, * 22.2 versions before 22.2R3-S6, * 22.3 versions before 22.3R3-S3, * 22.4 versions
    before 22.4R3-S6, * 23.2 versions before 23.2R2-S1, * 23.4 versions before 23.4R1-S2, 23.4R2; Junos OS
    Evolved: * all versions before 22.4R3-S6-EVO, * 23.2-EVO versions before 23.2R2-S1-EVO, * 23.4-EVO
    versions before 23.4R1-S2-EVO, 23.4R2-EVO. (CVE-2025-52988)

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/2025-07-Security-Bulletin-Junos-OS-and-Junos-OS-Evolved-Privilege-escalation-via-CLI-command-request-system-logout-CVE-2025-52988
  script_set_attribute(attribute:"see_also", value:"http://www.nessus.org/u?90b1f957");
  script_set_attribute(attribute:"solution", value:
"Apply the relevant Junos software release referenced in Juniper advisory JSA100095");
  script_set_cvss_base_vector("CVSS2#AV:L/AC:L/Au:M/C:C/I:C/A:C");
  script_set_cvss_temporal_vector("CVSS2#E:U/RL:OF/RC:C");
  script_set_cvss3_base_vector("CVSS:3.0/AV:L/AC:L/PR:H/UI:N/S:U/C:H/I:H/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:L/AC:L/AT:N/PR:H/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N");
  script_set_attribute(attribute:"cvss4_supplemental", value:"CVSS:4.0/AU:Y/R:U/RE:M");
  script_set_attribute(attribute:"cvss4_threat_vector", value:"CVSS:4.0/E:U");
  script_set_attribute(attribute:"cvss_score_source", value:"CVE-2025-52988");

  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:"2025/07/09");
  script_set_attribute(attribute:"patch_publication_date", value:"2025/07/09");
  script_set_attribute(attribute:"plugin_publication_date", value:"2025/07/25");

  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) 2025 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-S9'},
    {'min_ver':'0.0-EVO', 'fixed_ver':'22.4R3-S6-EVO'},
    {'min_ver':'21.4', 'fixed_ver':'21.4R3-S8'},
    {'min_ver':'22.2', 'fixed_ver':'22.2R3-S6'},
    {'min_ver':'22.3', 'fixed_ver':'22.3R3-S3'},
    {'min_ver':'22.4', 'fixed_ver':'22.4R3-S6'},
    {'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':'23.4R1-S2', 'fixed_display':'23.4R1-S2, 23.4R2'},
    {'min_ver':'23.4-EVO', 'fixed_ver':'23.4R1-S2-EVO', 'fixed_display':'23.4R1-S2-EVO, 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);