CVSS2
Attack Vector
NETWORK
Attack Complexity
LOW
Authentication
NONE
Confidentiality Impact
NONE
Integrity Impact
NONE
Availability Impact
COMPLETE
AV:N/AC:L/Au:N/C:N/I:N/A:C
EPSS
Percentile
85.7%
The remote host is running a version of Juniper ScreenOS 6.3 prior to 6.3.0r17. It is, therefore, affected by a denial of service vulnerability due to a failure to properly handle SSL/TLS protocol packets.
A remote, unauthenticated attacker could potentially exploit this vulnerability by sending malformed SSL/TLS packets to cause a firewall crash or failover. Repeated exploitation can result in an extended denial of service condition.
#
# (C) Tenable Network Security, Inc.
#
include("compat.inc");
if (description)
{
script_id(74149);
script_version("1.5");
script_cvs_date("Date: 2018/07/27 18:38:14");
script_cve_id("CVE-2014-2842");
script_bugtraq_id(66802);
script_xref(name:"CERT", value:"480428");
script_name(english:"Juniper ScreenOS 6.3 < 6.3.0r17 DoS");
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 6.3 prior to
6.3.0r17. It is, therefore, affected by a denial of service
vulnerability due to a failure to properly handle SSL/TLS protocol
packets.
A remote, unauthenticated attacker could potentially exploit this
vulnerability by sending malformed SSL/TLS packets to cause a firewall
crash or failover. Repeated exploitation can result in an extended
denial of service condition.");
script_set_attribute(attribute:"see_also", value:"https://kb.juniper.net/InfoCenter/index?page=content&id=JSA10624");
script_set_attribute(attribute:"solution", value:"Upgrade to 6.3.0r17 or later.");
script_set_cvss_base_vector("CVSS2#AV:N/AC:L/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:"2014/04/15");
script_set_attribute(attribute:"plugin_publication_date", value:"2014/05/23");
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");
app_name = "Juniper ScreenOS";
display_version = get_kb_item_or_exit("Host/Juniper/ScreenOS/display_version");
version = get_kb_item_or_exit("Host/Juniper/ScreenOS/version");
# This is a paranoid check because patches may have been applied but
# we can't check for that.
if (report_paranoia < 2) audit(AUDIT_PARANOID);
display_fix = "6.3.0r17";
fix = str_replace(string:display_fix, find:'r', replace:'.');
# Only treat 6.3.x as affected.
if (version =~ "^6\.3\." && ver_compare(ver:version, fix:fix, strict:FALSE) == -1)
{
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);