The remote host is running a version of Juniper ScreenOS prior to 5.4.0r28 / 6.2.0r18 / 6.3.0r16. It is, therefore, affected by a denial of service vulnerability due to a failure to properly handle ICMP echo request packets.
A remote, unauthenticated attacker could potentially exploit this vulnerability by sending malformed ICMP echo request packets to cause a firewall crash or failover. Repeated exploitation can result in an extended denial of service condition.
Note that the host is not affected if the ‘Ping of Death’ screen is enabled.
#
# (C) Tenable Network Security, Inc.
#
include("compat.inc");
if (description)
{
script_id(74367);
script_version("1.3");
script_cvs_date("Date: 2018/11/15 20:50:22");
script_cve_id("CVE-2013-6958");
script_bugtraq_id(64260);
script_name(english:"Juniper ScreenOS 5.4 < 5.4.0r28 / 6.2 < 6.2.0r18 / 6.3 < 6.3.0r16 Malformed ICMP Echo Request DoS (JSA10604)");
script_summary(english:"Checks version of ScreenOS.");
script_set_attribute(attribute:"synopsis", value:"The remote host is affected by a denial of service vulnerability.");
script_set_attribute(attribute:"description", value:
"The remote host is running a version of Juniper ScreenOS prior to
5.4.0r28 / 6.2.0r18 / 6.3.0r16. It is, therefore, affected by a denial
of service vulnerability due to a failure to properly handle ICMP echo
request packets.
A remote, unauthenticated attacker could potentially exploit this
vulnerability by sending malformed ICMP echo request packets to cause
a firewall crash or failover. Repeated exploitation can result in an
extended denial of service condition.
Note that the host is not affected if the 'Ping of Death' screen is
enabled.");
script_set_attribute(attribute:"see_also", value:"https://kb.juniper.net/InfoCenter/index?page=content&id=JSA10604");
script_set_attribute(attribute:"see_also", value:"https://seclists.org/bugtraq/2014/Jan/73");
script_set_attribute(attribute:"solution", value:
"Upgrade to 5.4.0r28 / 6.2.0r18 / 6.3.0r16 or later or apply the
workaround.");
script_set_cvss_base_vector("CVSS2#AV:N/AC:M/Au:N/C:N/I:N/A:C");
script_set_cvss_temporal_vector("CVSS2#E:U/RL:OF/RC:C");
script_set_attribute(attribute:"exploitability_ease", value:"No known exploits are available");
script_set_attribute(attribute:"exploit_available", value:"false");
script_set_attribute(attribute:"vuln_publication_date", value:"2013/12/11");
script_set_attribute(attribute:"patch_publication_date", value:"2013/06/18");
script_set_attribute(attribute:"plugin_publication_date", value:"2014/06/06");
script_set_attribute(attribute:"potential_vulnerability", value:"true");
script_set_attribute(attribute:"plugin_type", value:"local");
script_set_attribute(attribute:"cpe", value:"cpe:/o:juniper:screenos");
script_end_attributes();
script_category(ACT_GATHER_INFO);
script_family(english:"Firewalls");
script_copyright(english:"This script is Copyright (C) 2014-2018 Tenable Network Security, Inc.");
script_dependencies("screenos_version.nbin");
script_require_keys("Host/Juniper/ScreenOS/display_version", "Host/Juniper/ScreenOS/version", "Settings/ParanoidReport");
exit(0);
}
include("audit.inc");
include("global_settings.inc");
include("misc_func.inc");
# This is a paranoid check because the Ping of Death screen may be enabled
if (report_paranoia < 2) audit(AUDIT_PARANOID);
kb_base = "Host/Juniper/ScreenOS/";
display_version = get_kb_item_or_exit(kb_base + "display_version");
version = get_kb_item_or_exit(kb_base + "version");
if (version =~ "^5\.4\.")
model = get_kb_item_or_exit(kb_base + "model");
app_name = "Juniper ScreenOS";
display_fix = NULL;
if (version =~ "^5\.4([^0-9]|$)" && "5GT" >< model && ver_compare(ver:version, fix:"5.4.0.28", strict:FALSE) == -1)
display_fix = "5.4.0r28";
else if (version =~ "^6\.2([^0-9]|$)" && ver_compare(ver:version, fix:"6.2.0.18", strict:FALSE) == -1)
display_fix = "6.2.0r18";
else if (version =~ "^6\.3([^0-9]|$)" && ver_compare(ver:version, fix:"6.3.0.16", strict:FALSE) == -1)
display_fix = "6.3.0r16";
if (!isnull(display_fix))
{
port = 0;
if (report_verbosity > 0)
{
report =
'\n Installed version : ' + display_version +
'\n Fixed version : ' + display_fix +
'\n';
security_hole(extra:report, port:port);
}
else security_hole(port);
exit(0);
}
else audit(AUDIT_INST_VER_NOT_VULN, app_name, display_version);