Juniper Networks Junos OS J-Web Persistent Cross Site Scripting Vulnerability

# SPDX-FileCopyrightText: 2014 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("1.3.6.1.4.1.25623.1.0.105908");
  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:"2014-05-02 16:15:10 +0700 (Fri, 02 May 2014)");
  script_tag(name:"cvss_base", value:"4.3");
  script_tag(name:"cvss_base_vector", value:"AV:N/AC:M/Au:N/C:N/I:P/A:N");

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

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

  script_cve_id("CVE-2014-2711");

  script_name("Juniper Networks Junos OS J-Web Persistent Cross Site Scripting Vulnerability");

  script_category(ACT_GATHER_INFO);
  script_copyright("Copyright (C) 2014 Greenbone AG");
  script_family("JunOS Local Security Checks");
  script_dependencies("gb_juniper_junos_consolidation.nasl");
  script_mandatory_keys("juniper/junos/detected", "juniper/junos/build");

  script_tag(name:"summary", value:"Persistent XSS Vulnerability in J-Web");

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

  script_tag(name:"insight", value:"A persistent cross site scripting vulnerability in J-Web may
allow a remote unauthenticated user to inject web script or HTML and steal sensitive data and credentials
from a J-Web session and to perform administrative actions on the Junos device. An attacker can inject
web script or HTML even when J-Web is disabled, but the vulnerability can only be exploited when J-Web is
used to monitor the system.");

  script_tag(name:"impact", value:"A remote unauthenticated user can inject web script or HTML and
steal sensitive data and credentials from a J-Web session and perform administrative
actions on the Junos device.");

  script_tag(name:"affected", value:"Junos OS 11.4, 12.1, 12.2, 12.3, 13.1, 13.2, 13.3.");

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

  script_xref(name:"URL", value:"http://kb.juniper.net/JSA10619");
  script_xref(name:"URL", value:"http://www.securityfocus.com/bid/66770");


  exit(0);
}

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

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

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

desc += "Version/Build-Date:
" + version + " / " + build;

build2check = str_replace(string:build, find:"-", replace:"");

if (revcomp(a:build2check, b:"20140320") >= 0) {
  exit(99);
}

if (revcomp(a:version, b:"11.4R11") < 0) {
  security_message(port:0, data:desc);
  exit(0);
}

if ((revcomp(a:version, b:"11.4X27.62") < 0) &&
    (revcomp(a:version, b:"11.4X") >= 0)) {
  security_message(port:0, data:desc);
  exit(0);
}

if (version =~ "^12") {
  if (revcomp(a:version, b:"12.1R9") < 0) {
    security_message(port:0, data:desc);
    exit(0);
  } else if ((revcomp(a:version, b:"12.1X44-D35") < 0) &&
             (revcomp(a:version, b:"12.1X44") >= 0)) {
    security_message(port:0, data:desc);
    exit(0);
  } else if ((revcomp(a:version, b:"12.1X45-D25") < 0) &&
             (revcomp(a:version, b:"12.1X45") >= 0)) {
    security_message(port:0, data:desc);
    exit(0);
  } else if ((revcomp(a:version, b:"12.1X46-D20") < 0) &&
             (revcomp(a:version, b:"12.1X46") >= 0)) {
    security_message(port:0, data:desc);
    exit(0);
  } else if ((revcomp(a:version, b:"12.2R7") < 0) &&
             (revcomp(a:version, b:"12.2") >= 0)) {
    security_message(port:0, data:desc);
    exit(0);
  } else if ((revcomp(a:version, b:"12.3R6") < 0) &&
             (revcomp(a:version, b:"12.3") >= 0)) {
    security_message(port:0, data:desc);
    exit(0);
  }
}

if (version =~ "^13") {
  if (revcomp(a:version, b:"13.1R4") < 0) {
    security_message(port:0, data:desc);
    exit(0);
  } else if ((revcomp(a:version, b:"13.2R3") < 0) &&
             (revcomp(a:version, b:"13.2") >= 0)) {
    security_message(port:0, data:desc);
    exit(0);
  } else if ((revcomp(a:version, b:"13.3R1") < 0) &&
             (revcomp(a:version, b:"13.3") >= 0)) {
    security_message(port:0, data:desc);
    exit(0);
  }
}

exit(99);