Juniper Networks Junos OS TCP Timestamp 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("1.3.6.1.4.1.25623.1.0.106066");
  script_version("2023-07-21T05:05:22+0000");
  script_tag(name:"last_modification", value:"2023-07-21 05:05:22 +0000 (Fri, 21 Jul 2023)");
  script_tag(name:"creation_date", value:"2016-05-04 23:15:02 +0200 (Wed, 04 May 2016)");
  script_tag(name:"cvss_base", value:"7.8");
  script_tag(name:"cvss_base_vector", value:"AV:N/AC:L/Au:N/C:N/I:N/A:C");
  script_tag(name:"severity_vector", value:"CVSS:3.0/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:"2016-04-20 19:00:00 +0000 (Wed, 20 Apr 2016)");

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

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

  script_cve_id("CVE-2016-1269");

  script_name("Juniper Networks Junos OS TCP Timestamp 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.");

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

  script_tag(name:"insight", value:"By manipulating TCP timestamps within a TCP session
to a reachable listening port, it may be possible for an attacker to trigger a persistent
buffer/socket resource exhaustion denial of service DoS attack. Normally, a networked device
will time out a session after a number of unsuccessful retransmission events, occurring at
increasing intervals. However, in this case, a crafted sequence of TCP packets will cause
the device to not try to retransmit, allowing the attacker to create sockets that will be
long-lived without the need to maintain state on them.");

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

  script_tag(name:"affected", value:"Junos OS 12.1, 12.3, 13.2, 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/JSA10736");

  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: "12.1X44-D60") < 0) {
    report = report_fixed_ver(installed_version: version, fixed_version: "12.1X44-D60");
    security_message(port: 0, data: report);
    exit(0);
  }
  else if ((revcomp(a: version, b: "12.1X46-D40") < 0) &&
           (revcomp(a: version, b: "12.1X46") >= 0)) {
    report = report_fixed_ver(installed_version: version, fixed_version: "12.1X46-D40");
    security_message(port: 0, data: report);
    exit(0);
  }
  else if ((revcomp(a: version, b: "12.1X47-D30") < 0) &&
           (revcomp(a: version, b: "12.1.X47") >= 0)) {
    report = report_fixed_ver(installed_version: version, fixed_version: "12.1X47-D30");
    security_message(port: 0, data: report);
    exit(0);
  }
  else if ((revcomp(a: version, b: "12.3R11") < 0) &&
           (revcomp(a: version, b: "12.3") >= 0)) {
    report = report_fixed_ver(installed_version: version, fixed_version: "12.3R11");
    security_message(port: 0, data: report);
    exit(0);
  }
  else if ((revcomp(a: version, b: "12.3X48-D20") < 0) &&
           (revcomp(a: version, b: "12.3X48") >= 0)) {
    report = report_fixed_ver(installed_version: version, fixed_version: "12.3X48-D20");
    security_message(port: 0, data: report);
    exit(0);
  }
}

if (version =~ "^13") {
  if (revcomp(a: version, b: "13.2R9") < 0) {
    report = report_fixed_ver(installed_version: version, fixed_version: "13.2R9");
    security_message(port: 0, data: report);
    exit(0);
  }
  else if ((revcomp(a: version, b: "13.2X51-D39") < 0) &&
           (revcomp(a: version, b: "13.2X51") >= 0)) {
    report = report_fixed_ver(installed_version: version, fixed_version: "13.2X51-D39");
    security_message(port: 0, data: report);
    exit(0);
  }
  else if ((revcomp(a: version, b: "13.3R8") < 0) &&
           (revcomp(a: version, b: "13.3") >= 0)) {
    report = report_fixed_ver(installed_version: version, fixed_version: "13.3R8");
    security_message(port: 0, data: report);
    exit(0);
  }
}

if (version =~ "^14") {
  if (revcomp(a: version, b: "14.1R6") < 0) {
    report = report_fixed_ver(installed_version: version, fixed_version: "14.1R6");
    security_message(port: 0, data: report);
    exit(0);
  }
  else if ((revcomp(a: version, b: "14.1X53-D30") < 0) &&
           (revcomp(a: version, b: "14.1X53") >= 0)) {
    report = report_fixed_ver(installed_version: version, fixed_version: "14.1X53-D30");
    security_message(port: 0, data: report);
    exit(0);
  }
  else if ((revcomp(a: version, b: "14.2R4-S1") < 0) &&
           (revcomp(a: version, b: "14.2") >= 0)) {
    report = report_fixed_ver(installed_version: version, fixed_version: "14.2R4-S1");
    security_message(port: 0, data: report);
    exit(0);
  }
}

if (version =~ "^15") {
  if (revcomp(a: version, b: "15.1R2") < 0) {
    report = report_fixed_ver(installed_version: version, fixed_version: "15.1R2");
    security_message(port: 0, data: report);
    exit(0);
  }
  else if ((revcomp(a: version, b: "15.1X49-D30") < 0) &&
           (revcomp(a: version, b: "15.1X49") >= 0)) {
    report = report_fixed_ver(installed_version: version, fixed_version: "15.1X49-D30");
    security_message(port: 0, data: report);
    exit(0);
  }
}

exit(99);