Juniper Junos OS Vulnerability (JSA83023)

#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(202121);
  script_version("1.5");
  script_set_attribute(attribute:"plugin_modification_date", value:"2026/04/22");

  script_cve_id("CVE-2024-39565");
  script_xref(name:"JSA", value:"JSA83023");

  script_name(english:"Juniper Junos OS Vulnerability (JSA83023)");

  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 JSA83023
advisory.

  - An Improper Neutralization of Data within XPath Expressions ('XPath Injection') vulnerability in J-Web
    shipped with Juniper Networks Junos OS allows an unauthenticated, network-based attacker to execute remote
    commands on the target device. (CVE-2024-39565)

Note: Nessus found J-Web enabled [set system services web-management http(s)] on this device.");
  script_set_attribute(attribute:"see_also", value:"https://support.juniper.net/support/downloads/?p=283");
  # https://www.first.org/cvss/calculator/v4-0#CVSS:4.0/AV:N/AC:H/AT:P/PR:N/UI:P/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N/E:P/AU:Y/R:I/V:C/RE:L/U:Amber
  script_set_attribute(attribute:"see_also", value:"http://www.nessus.org/u?e33ab8cf");
  # https://supportportal.juniper.net/s/article/2024-07-Security-Bulletin-Junos-OS-SRX-Series-EX-Series-J-Web-An-unauthenticated-network-based-attacker-can-perform-XPATH-injection-attack-against-a-device-CVE-2024-39565
  script_set_attribute(attribute:"see_also", value:"http://www.nessus.org/u?f120ed69");
  script_set_attribute(attribute:"solution", value:
"- Disable J-Web and using only alternate options such as Netconf over SSH for device management.
- Restricting the use of J-Web to low-privileged accounts only.
- Deploying the appropriate IDP Signature on devices which do not have J-Web enabled which protect the device downstream which requires J-Web to be enabled.

When remediating, please also refer to Juniper advisory JSA83023.");
  script_set_cvss_base_vector("CVSS2#AV:N/AC:L/Au:N/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:N/AC:L/PR:N/UI:R/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:N/AC:H/AT:P/PR:N/UI:P/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:I/V:C/RE:L/U:Amber");
  script_set_attribute(attribute:"cvss4_threat_vector", value:"CVSS:4.0/E:P");
  script_set_attribute(attribute:"cvss_score_source", value:"CVE-2024-39565");

  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:"former");
  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", "Host/Juniper/model");

  exit(0);
}

include('junos.inc');
include('junos_kb_cmd_func.inc');

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

if (model !~ "^(EX|SRX)")
  audit(AUDIT_DEVICE_NOT_VULN, model);

var vuln_ranges = [
  {'min_ver':'0.0', 'fixed_ver':'21.2R3-S8', 'model':'^(EX|SRX)'},
  {'min_ver':'21.4', 'fixed_ver':'21.4R3-S7', 'model':'^(EX|SRX)'},
  {'min_ver':'22.2', 'fixed_ver':'22.2R3-S4', 'model':'^(EX|SRX)'},
  {'min_ver':'22.3', 'fixed_ver':'22.3R3-S3', 'model':'^(EX|SRX)'},
  {'min_ver':'22.4', 'fixed_ver':'22.4R3-S2', 'model':'^(EX|SRX)'},
  {'min_ver':'23.2', 'fixed_ver':'23.2R2', 'model':'^(EX|SRX)'},
  {'min_ver':'23.4', 'fixed_ver':'23.4R1-S1', 'model':'^(EX|SRX)', 'fixed_display':'23.4R1-S1, 23.4R2'}
];

var override = TRUE;
var buf = junos_command_kb_item(cmd:"show configuration | display set");
if (!empty_or_null(buf))
{
  override = FALSE;
  if(!junos_check_config(buf:buf, pattern:"^set system services web-management http(s)?")) 
    audit(AUDIT_HOST_NOT, 'vulnerable as J-Web is not enabled');
}

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);
junos_report(ver:ver, fix:fix, override:override, severity:SECURITY_HOLE);