Juniper Networks Junos OS SRX Series: MACsec Failure Vulnerability

# SPDX-FileCopyrightText: 2017 Greenbone AG
# Some text descriptions might be excerpted from (a) referenced
# source(s), and are Copyright (C) by the respective right holder(s).
#
# SPDX-License-Identifier: GPL-2.0-only

CPE = "cpe:/o:juniper:junos";

if (description)
{
  script_oid("1.3.6.1.4.1.25623.1.0.106944");
  script_version("2026-04-24T06:23:04+0000");
  script_tag(name:"last_modification", value:"2026-04-24 06:23:04 +0000 (Fri, 24 Apr 2026)");
  script_tag(name:"creation_date", value:"2017-07-13 12:08:53 +0700 (Thu, 13 Jul 2017)");
  script_tag(name:"cvss_base", value:"4.3");
  script_tag(name:"cvss_base_vector", value:"AV:A/AC:M/Au:N/C:P/I:P/A:N");
  script_tag(name:"severity_vector", value:"CVSS:3.0/AV:A/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:N");
  script_tag(name:"severity_origin", value:"NVD");
  script_tag(name:"severity_date", value:"2019-10-09 23:26:00 +0000 (Wed, 09 Oct 2019)");

  script_cve_id("CVE-2017-2342");

  script_tag(name:"qod_type", value:"package");

  script_tag(name:"solution_type", value:"VendorFix");

  script_name("Juniper Networks Junos OS SRX Series: MACsec Failure Vulnerability");

  script_category(ACT_GATHER_INFO);

  script_family("JunOS Local Security Checks");
  script_copyright("Copyright (C) 2017 Greenbone AG");
  script_dependencies("gb_juniper_junos_consolidation.nasl");
  script_mandatory_keys("juniper/junos/detected", "juniper/junos/model");

  script_tag(name:"summary", value:"Junos OS on SRX300 series are prone to a MACsec failure to report errors.");

  script_tag(name:"vuldetect", value:"Checks if a vulnerable OS build is present on the target host.");

  script_tag(name:"insight", value:"MACsec feature does not report errors when a secure link can not be
established. It falls back to an unencrypted link. This can happen when MACsec is configured on ports that are
not capable of MACsec or when a secure link can not be established. This can mislead customers into believing
that a link is secure.");

  script_tag(name:"affected", value:"Junos OS 15.1X49 on SRX300 Series.");

  script_tag(name:"solution", value:"New builds of Junos OS software are available from Juniper.");

  script_xref(name:"URL", value:"http://kb.juniper.net/JSA10790");

  exit(0);
}

include("host_details.inc");
include("revisions-lib.inc");
include("version_func.inc");

model = get_kb_item("juniper/junos/model");
if (!model || (model !~ '^SRX3..'))
  exit(0);

if (!version = get_app_version(cpe: CPE, nofork: TRUE))
  exit(0);

if ((revcomp(a: version, b: "15.1X49-D100") < 0) &&
    (revcomp(a: version, b: "15.1X49") >= 0)) {
  report = report_fixed_ver(installed_version: version, fixed_version: "15.1X49-D100");
  security_message(port: 0, data: report);
  exit(0);
}

exit(99);