Juniper Networks Junos OS Embedthis Appweb Server DoS Vulnerability

# 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("1.3.6.1.4.1.25623.1.0.106063");
  script_version("2023-07-20T05:05:17+0000");
  script_tag(name:"last_modification", value:"2023-07-20 05:05:17 +0000 (Thu, 20 Jul 2023)");
  script_tag(name:"creation_date", value:"2016-01-18 09:17:30 +0700 (Mon, 18 Jan 2016)");
  script_tag(name:"cvss_base", value:"5.0");
  script_tag(name:"cvss_base_vector", value:"AV:N/AC:L/Au:N/C:N/I:N/A:P");
  script_tag(name:"severity_vector", value:"CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:L");
  script_tag(name:"severity_origin", value:"NVD");
  script_tag(name:"severity_date", value:"2016-12-03 03:20:00 +0000 (Sat, 03 Dec 2016)");

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

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

  script_cve_id("CVE-2016-1258");

  script_name("Juniper Networks Junos OS Embedthis Appweb Server DoS Vulnerability");

  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");

  script_tag(name:"summary", value:"Junos OS is prone to a Denial of Service vulnerability with
J-Web enabled.");

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

  script_tag(name:"insight", value:"A denial of service vulnerability in Embedthis Appweb Server
while processing certain malformed HTTP requests may allow a remote unauthenticated user to crash
the J-Web service.");

  script_tag(name:"impact", value:"A network based unauthenticated attacker can cause the J-Web
service on a device to become unavailable.");

  script_tag(name:"affected", value:"Junos OS 12.1, 12.3, 13.2, 13.3, 14.1 and 14.2");

  script_tag(name:"solution", value:"New builds of Junos OS software are available from Juniper. As
a workaround disable J-Web.");

  script_xref(name:"URL", value:"http://kb.juniper.net/JSA10720");

  exit(0);
}

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

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

if (version =~ "^12") {
  if ((revcomp(a: version, b: "12.1X44-D60") < 0) &&
      (revcomp(a: version, b: "12.1X44") >= 0)) {
    security_message(port: 0, data: version);
    exit(0);
  }
  else if ((revcomp(a: version, b: "12.1X46-D45") < 0) &&
           (revcomp(a: version, b: "12.1X46") >= 0)) {
    security_message(port: 0, data: version);
    exit(0);
  }
  else if ((revcomp(a: version, b: "12.1X47-D30") < 0) &&
           (revcomp(a: version, b: "12.1X47") >= 0)) {
    security_message(port: 0, data: version);
    exit(0);
  }
  else if ((revcomp(a: version, b: "12.3R10") < 0) &&
           (revcomp(a: version, b: "12.3") >= 0)) {
    security_message(port: 0, data: version);
    exit(0);
  }
  else if ((revcomp(a: version, b: "12.3X48-D20") < 0) &&
           (revcomp(a: version, b: "12.3X48") >= 0)) {
    security_message(port: 0, data: version);
    exit(0);
  }
}

if (version =~ "^13") {
  if ((revcomp(a: version, b: "13.2X51-D20") < 0) &&
      (revcomp(a: version, b: "13.2X51") >= 0)) {
    security_message(port: 0, data: version);
    exit(0);
  }
  else if ((revcomp(a: version, b: "13.3R8") < 0) &&
           (revcomp(a: version, b: "13.3") >= 0)) {
    security_message(port: 0, data: version);
    exit(0);
  }
}

if (version =~ "^14") {
  if (revcomp(a: version, b: "14.1R6") < 0) {
    security_message(port: 0, data: version);
    exit(0);
  }
  else if ((revcomp(a: version, b: "14.2R5") < 0) &&
           (revcomp(a: version, b: "14.2") >= 0)) {
    security_message(port: 0, data: version);
    exit(0);
  }
}

exit(99);