Juniper Networks Junos OS SRX Series ALGs DoS Vulnerability (JSA10751)

# SPDX-FileCopyrightText: 2016 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("1.3.6.1.4.1.25623.1.0.106139");
  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:"2016-07-14 10:16:23 +0700 (Thu, 14 Jul 2016)");
  script_tag(name:"cvss_base", value:"7.1");
  script_tag(name:"cvss_base_vector", value:"AV:N/AC:M/Au:N/C:N/I:N/A:C");
  script_tag(name:"severity_vector", value:"CVSS:3.0/AV:N/AC:H/PR:N/UI:N/S:U/C:N/I:N/A:H");
  script_tag(name:"severity_origin", value:"NVD");
  script_tag(name:"severity_date", value:"2019-06-26 19:10:00 +0000 (Wed, 26 Jun 2019)");

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

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

  script_cve_id("CVE-2016-1276");

  script_name("Juniper Networks Junos OS SRX Series ALGs DoS Vulnerability (JSA10751)");

  script_category(ACT_GATHER_INFO);

  script_family("JunOS Local Security Checks");
  script_copyright("Copyright (C) 2016 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 SRX Series is prone to a denial of service (DoS)
  vulnerability.");

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

  script_tag(name:"insight", value:"When High-End SRX-Series chassis have policies with one or more
  ALG's (application layer gateways) enabled, which are applied to in-transit traffic, this may
  trigger a number of failure conditions which could cause various types of denials of service to
  traffic in-transit.");

  script_tag(name:"impact", value:"An attacker may cause a denial of service condition.");

  script_tag(name:"affected", value:"Junos OS version 12.1, 12.3 and 15.1 on SRX Series.");

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

  script_xref(name:"URL", value:"https://kb.juniper.net/JSA10751");

  exit(0);
}

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

if (!model = get_kb_item("juniper/junos/model"))
  exit(0);

if (model !~ "^SRX")
  exit(0);

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

if (version =~ "^12") {
  if ((revcomp(a: version, b: "12.1X46-D50") < 0) &&
      (revcomp(a: version, b: "12.1X46") >= 0)) {
    report = report_fixed_ver(installed_version: version, fixed_version: "12.1X46-D50");
    security_message(port: 0, data: report);
    exit(0);
  }
  else if ((revcomp(a: version, b: "12.1X47-D23") < 0) &&
           (revcomp(a: version, b: "12.1X47") >= 0)) {
    report = report_fixed_ver(installed_version: version, fixed_version: "12.1X47-D23");
    security_message(port: 0, data: report);
    exit(0);
  }
  else if ((revcomp(a: version, b: "12.3X48-D25") < 0) &&
           (revcomp(a: version, b: "12.3X48") >= 0)) {
    report = report_fixed_ver(installed_version: version, fixed_version: "12.3X48-D25");
    security_message(port: 0, data: report);
    exit(0);
  }
}

if (version =~ "^15") {
  if ((revcomp(a: version, b: "15.1X49-D40") < 0) &&
      (revcomp(a: version, b: "15.1X49") >= 0)) {
    report = report_fixed_ver(installed_version: version, fixed_version: "15.1X49-D40");
    security_message(port: 0, data: report);
    exit(0);
  }
}

exit(99);