Juniper Networks Junos OS JPPPD Denial of Service Vulnerability

# SPDX-FileCopyrightText: 2015 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("1.3.6.1.4.1.25623.1.0.105945");
  script_cve_id("CVE-2014-6382");
  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_version("2026-04-24T06:23:04+0000");

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

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

  script_name("Juniper Networks Junos OS JPPPD Denial of Service Vulnerability");

  script_xref(name:"URL", value:"http://kb.juniper.net/JSA10665");
  script_xref(name:"URL", value:"http://www.securityfocus.com/bid/72070");

  script_tag(name:"summary", value:"Junos OS is prone to a DoS vulnerability in JPPPD.");

  script_tag(name:"impact", value:"Every time a crafted PAP authentication request is sent, the Juniper
PPP daemon will crash, leading to a denial of service condition.");

  script_tag(name:"insight", value:"Using PPP authentication with a specifically crafted PAP
Authenticate-Request may cause the Juniper PPP daemon (jpppd) to crash and restart. After PPPoE Discovery
and LCP phase is successfully negotiated, when the crafted PAP Authenticate-Request is received, jpppd
crashes and no response is sent by the broadband edge router to the subscriber.");

  script_tag(name:"vuldetect", value:"Checks if a vulnerable OS build is present on the target host.");
  script_tag(name:"solution", value:"New builds of Junos OS software are available from Juniper. As a
workaround discontinue PAP authentication for PPP subscribers.");
  script_tag(name:"affected", value:"Junos OS 13.3, 14.1 and 14.2");

  script_tag(name:"last_modification", value:"2026-04-24 06:23:04 +0000 (Fri, 24 Apr 2026)");
  script_tag(name:"creation_date", value:"2015-01-23 10:27:13 +0700 (Fri, 23 Jan 2015)");
  script_category(ACT_GATHER_INFO);
  script_family("JunOS Local Security Checks");
  script_copyright("Copyright (C) 2015 Greenbone AG");
  script_dependencies("gb_juniper_junos_consolidation.nasl");
  script_mandatory_keys("juniper/junos/detected", "juniper/junos/model");

  exit(0);
}

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

model = get_kb_item("juniper/junos/model");
if (!model || (model !~ '^MX[0-9]+'))
  exit(99);

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

if (version =~ "^13") {
  if ((revcomp(a:version, b:"13.3R6") < 0) &&
      (revcomp(a:version, b:"13.3R3") >= 0)) {
    security_message(port:0, data:version);
    exit(0);
  }
}

if (version =~ "^14") {
  if (revcomp(a:version, b:"14.1R4") < 0) {
    security_message(port:0, data:version);
    exit(0);
  }
  else if ((revcomp(a:version, b:"14.1X50-D70") < 0) &&
           (revcomp(a:version, b:"14.1X") >= 0)) {
    security_message(port:0, data:version);
    exit(0);
  }
  else if ((revcomp(a:version, b:"14.2R2") < 0) &&
           (revcomp(a:version, b:"14.2") >= 0)) {
    security_message(port:0, data:version);
    exit(0);
  }
}

exit(99);