Juniper Networks Junos OS RPD DoS 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("1.3.6.1.4.1.25623.1.0.106948");
  script_version("2023-07-25T05:05:58+0000");
  script_tag(name:"last_modification", value:"2023-07-25 05:05:58 +0000 (Tue, 25 Jul 2023)");
  script_tag(name:"creation_date", value:"2017-07-13 14:46:37 +0700 (Thu, 13 Jul 2017)");
  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:3.1/AV:N/AC:L/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:"2020-02-20 15:12:00 +0000 (Thu, 20 Feb 2020)");

  script_cve_id("CVE-2017-2314");

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

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

  script_name("Juniper Networks Junos OS RPD DoS 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");

  script_tag(name:"summary", value:"Junos OS is prone to a denial of service vulnerability in RPD due to
malformed BGP OPEN message.");

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

  script_tag(name:"insight", value:"Receipt of a malformed BGP OPEN message may cause the routing protocol
daemon (rpd) process to crash and restart. By continuously sending specially crafted  BGP OPEN message packets,
an attacker can repetitively crash the rpd process causing prolonged denial of service.");

  script_tag(name:"affected", value:"This issue affects Junos OS 12.3, 13.3, 14.1, 14.2 and 15.1.");

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

  script_xref(name:"URL", value:"http://kb.juniper.net/JSA10779");

  exit(0);
}

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

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

if (version =~ "^12") {
  if ((revcomp(a: version, b: "12.3R13") < 0) &&
      (revcomp(a: version, b: "12.3R") >= 0)) {
    report = report_fixed_ver(installed_version: version, fixed_version: "12.3R13");
    security_message(port: 0, data: report);
    exit(0);
  }
  else if ((revcomp(a: version, b: "12.3X48-D50") < 0) &&
           (revcomp(a: version, b: "12.3X48") >= 0)) {
    report = report_fixed_ver(installed_version: version, fixed_version: "12.3X48-D50");
    security_message(port: 0, data: report);
    exit(0);
  }
}

if (version =~ "^13") {
  if ((revcomp(a: version, b: "13.3R10") < 0) &&
      (revcomp(a: version, b: "13.3R") >= 0)) {
    report = report_fixed_ver(installed_version: version, fixed_version: "13.3R10");
    security_message(port: 0, data: report);
    exit(0);
  }
}

if (version =~ "^14") {
  if ((revcomp(a: version, b: "14.1R9") < 0) &&
      (revcomp(a: version, b: "14.1R") >= 0)) {
    report = report_fixed_ver(installed_version: version, fixed_version: "14.1R9");
    security_message(port: 0, data: report);
    exit(0);
  }
  else if ((revcomp(a: version, b: "14.1X53-D40") < 0) &&
           (revcomp(a: version, b: "14.1X53") >= 0)) {
    report = report_fixed_ver(installed_version: version, fixed_version: "14.1X53-D40");
    security_message(port: 0, data: report);
    exit(0);
  }
  else if ((revcomp(a: version, b: "14.1X55-D35") < 0) &&
           (revcomp(a: version, b: "14.1X55") >= 0)) {
    report = report_fixed_ver(installed_version: version, fixed_version: "14.1X55-D35");
    security_message(port: 0, data: report);
    exit(0);
  }
  else if ((revcomp(a: version, b: "14.2R7") < 0) &&
           (revcomp(a: version, b: "14.2R") >= 0)) {
    report = report_fixed_ver(installed_version: version, fixed_version: "14.2R7");
    security_message(port: 0, data: report);
    exit(0);
  }
}

if (version =~ "^15") {
  if ((revcomp(a: version, b: "15.1F6") < 0) &&
      (revcomp(a: version, b: "15.1F") >= 0)) {
    report = report_fixed_ver(installed_version: version, fixed_version: "15.1F6");
    security_message(port: 0, data: report);
    exit(0);
  }
  else if ((revcomp(a: version, b: "15.1R4") < 0) &&
           (revcomp(a: version, b: "15.1R") >= 0)) {
    report = report_fixed_ver(installed_version: version, fixed_version: "15.1R4");
    security_message(port: 0, data: report);
    exit(0);
  }
  else 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);
  }
  else if ((revcomp(a: version, b: "15.1X53-D50") < 0) &&
           (revcomp(a: version, b: "15.1X53") >= 0)) {
    report = report_fixed_ver(installed_version: version, fixed_version: "15.1X53-D50");
    security_message(port: 0, data: report);
    exit(0);
  }
}

exit(99);