Juniper Junos CLI Local Privilege Escalation (JSA10803)

#
# (C) Tenable Network Security, Inc.
#

include("compat.inc");

if (description)
{
  script_id(102078);
  script_version("1.7");
  script_set_attribute(attribute:"plugin_modification_date", value:"2026/04/22");

  script_cve_id("CVE-2017-10602");
  script_xref(name:"JSA", value:"JSA10803");

  script_name(english:"Juniper Junos CLI Local Privilege Escalation (JSA10803)");
  script_summary(english:"Checks the Junos version.");

  script_set_attribute(attribute:"synopsis", value:
"The remote device is affected by a local privilege escalation
vulnerability.");
  script_set_attribute(attribute:"description", value:
"According to its self-reported version number, the remote Juniper
Junos device is affected by an unspecified buffer overflow condition
in the CLI component that allows a local attacker who has read-only
privileges to execute arbitrary code with root privileges.");
  script_set_attribute(attribute:"see_also", value:"https://kb.juniper.net/InfoCenter/index?page=content&id=JSA10803");
  script_set_attribute(attribute:"solution", value:
"Upgrade to the relevant Junos software release referenced in Juniper
security advisory JSA10803.");
  script_set_cvss_base_vector("CVSS2#AV:L/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:L/AC:H/PR:L/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:"cvss_score_source", value:"manual");
  script_set_attribute(attribute:"cvss_score_rationale", value:"Set to score from vendor advisory.");
  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:"2017/07/12");
  script_set_attribute(attribute:"patch_publication_date", value:"2017/07/12");
  script_set_attribute(attribute:"plugin_publication_date", value:"2017/07/31");

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

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

  script_copyright(english:"This script is Copyright (C) 2018-2026 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 model = get_kb_item_or_exit('Host/Juniper/model');

var vuln_ranges;

# 14.1X53 versions prior to 14.1X53-D46 on EX2200/VC, EX3200,
# EX3300/VC, EX4200, EX4300, EX4550/VC, EX4600, EX6200,
# EX8200/VC (XRE), QFX3500, QFX3600, QFX5100;
if (model =~ "EX2200\/VC" ||
    model =~ "EX3200" ||
    model =~ "EX3300\/VC" ||
    model =~ "EX4200" ||
    model =~ "EX4300" ||
    model =~ "EX4550\/VC" ||
    model =~ "EX4600" ||
    model =~ "EX6200" ||
    model =~ "EX8200\/VC \(XRE\)" ||
    model =~ "QFX3500" ||
    model =~ "QFX3600" ||
    model =~ "QFX5100")
{
  vuln_ranges = [{'min_ver':'14.1X53', 'fixed_ver':'14.1X53-D46'}];
}
else
  vuln_ranges = [
    {'min_ver':'14.2', 'fixed_ver':'14.2R6'},
    {'min_ver':'15.1', 'fixed_ver':'15.1R3'},
    {'min_ver':'15.1X49', 'fixed_ver':'15.1X49-D40'},
    {'min_ver':'15.1X53', 'fixed_ver':'15.1X53-D47'}
  ];

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);