Juniper Networks Junos OS BGP FlowSpec 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("1.3.6.1.4.1.25623.1.0.105941");
  script_cve_id("CVE-2014-6386");
  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_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 BGP FlowSpec Denial of Service Vulnerability");

  script_xref(name:"URL", value:"http://kb.juniper.net/JSA10670");
  script_xref(name:"URL", value:"http://www.securityfocus.com/bid/72067");

  script_tag(name:"summary", value:"Junos OS with BGB FlowSpec enabled are vulnerable to a
Denial of Service attack.");

  script_tag(name:"impact", value:"Exploiting this issue may allow remote attackers to crash
and restart the RPD (Routing Protocol Daemon), causing denial-of-service conditions.");

  script_tag(name:"insight", value:"Receipt of a malformed BGP FlowSpec prefix may cause the
router to trigger an assert (programmatic crash) when detecting a certain specification violation.
Rather than simply flagging, logging, and/or dropping the packet, the routing process daemon (rpd)
will crash and restart.");

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

  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 10:31:00 +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");

  exit(0);
}

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

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

if (revcomp(a:version, b:"11.4R8") < 0) {
  security_message(port:0, data:version);
  exit(0);
}

if (version =~ "^12") {
  if (revcomp(a:version, b:"12.1X44-D35") < 0) {
    security_message(port:0, data:version);
    exit(0);
  }
  else if ((revcomp(a:version, b:"12.1X45-D25") < 0) &&
           (revcomp(a:version, b:"12.1X45") >= 0)) {
    security_message(port:0, data:version);
    exit(0);
  }
  else if ((revcomp(a:version, b:"12.1X46-D20") < 0) &&
           (revcomp(a:version, b:"12.1X46") >= 0)) {
    security_message(port:0, data:version);
    exit(0);
  }
  else if ((revcomp(a:version, b:"12.1X47-D10") < 0) &&
           (revcomp(a:version, b:"12.1X47") >= 0)) {
    security_message(port:0, data:version);
    exit(0);
  }
  else if ((revcomp(a:version, b:"12.2R9") < 0) &&
           (revcomp(a:version, b:"12.2") >= 0)) {
    security_message(port:0, data:version);
    exit(0);
  }
  else if ((revcomp(a:version, b:"12.3R2-S3") < 0) &&
           (revcomp(a:version, b:"12.3") >= 0)) {
    security_message(port:0, data:version);
    exit(0);
  }
}

if (version =~ "^13") {
  if (revcomp(a:version, b:"13.1R4") < 0) {
    security_message(port:0, data:version);
    exit(0);
  }
}

exit(99);