Cisco IOS SSH Large Packet CPU Consumption DoS (CSCdw33027)

#
# (C) Tenable Network Security, Inc.
#

include("compat.inc");

if(description)
{
 script_id(11381);
 script_version("1.26");
 script_cve_id("CVE-2002-1024");
 script_bugtraq_id(5114);

 script_name(english:"Cisco IOS SSH Large Packet CPU Consumption DoS (CSCdw33027)");

 script_set_attribute(attribute:"synopsis", value:
"The remote device is missing a vendor-supplied security patch." );
 script_set_attribute(attribute:"description", value:
"It is possible to make the remote IOS crash when sending
it malformed SSH packets." );
 script_set_attribute(attribute:"solution", value:
"See http://www.nessus.org/u?7641e722" );
  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_cwe_id(399);

 script_set_attribute(attribute:"plugin_publication_date", value: "2003/03/14");
 script_cvs_date("Date: 2018/06/27 18:42:25");
 script_set_attribute(attribute:"vuln_publication_date", value: "2002/06/27");
 script_set_attribute(attribute:"plugin_type", value:"local");
 script_set_attribute(attribute:"cpe", value: "cpe:/o:cisco:ios");
 script_end_attributes();

 script_summary(english:"Uses SNMP to determine if a flaw is present");
 script_category(ACT_GATHER_INFO);
 script_copyright(english:"This script is (C) 2003-2018 Tenable Network Security, Inc.");
 script_family(english:"CISCO");
 script_dependencie("snmp_sysDesc.nasl", "snmp_cisco_type.nasl");
 script_require_keys("SNMP/community", "SNMP/sysDesc", "CISCO/model");
 exit(0);
}

# The code starts here

ok=0;
os = get_kb_item("SNMP/sysDesc"); if(!os)exit(0);
hardware = get_kb_item("CISCO/model"); if(!hardware)exit(0);


# Check for the required operating system...
#----------------------------------------------------------------
# Is this IOS ?
if(!egrep(pattern:".*(Internetwork Operating|IOS).*", string:os))exit(0);
# 12.0S
if(egrep(string:os, pattern:"((12\.0\(([0-9]|1[0-6])\)|12\.0)S[0-9]*|12\.0\(17\)S[0-3]),"))ok=1;

# 12.0SP
if(egrep(string:os, pattern:"((12\.0\(([0-9]|1[0-9])\)|12\.0)SP[0-9]*|12\.0\(20\)SP[0-1]),"))ok=1;

# 12.0ST
if(egrep(string:os, pattern:"((12\.0\(([0-9]|1[0-6])\)|12\.0)ST[0-9]*|12\.0\(17\)ST[0-4]),"))ok=1;

# 12.0XB
if(egrep(string:os, pattern:"(12\.0\([0-9]*\)|12\.0)XB[0-9]*,"))ok=1;

# 12.0XM
if(egrep(string:os, pattern:"(12\.0\([0-9]*\)|12\.0)XM[0-9]*,"))ok=1;

# 12.0XV
if(egrep(string:os, pattern:"(12\.0\([0-9]*\)|12\.0)XV[0-9]*,"))ok=1;

# 12.1E
if(egrep(string:os, pattern:"(12\.1\(([0-9][^0-9]|10.[0-4])\)|12\.1)E[0-9]*,"))ok=1;

# 12.1EC
if(egrep(string:os, pattern:"(12\.1\(([0-9][^0-9]|10.[0-4])\)|12\.1)EC[0-9]*,"))ok=1;

# 12.1EX
if(egrep(string:os, pattern:"(12\.1\([0-9]*\)|12\.1)EX[0-9]*,"))ok=1;

# 12.1T
if(egrep(string:os, pattern:"(12\.1\([0-9]*\)|12\.1)T[0-9]*,"))ok=1;

# 12.1XB
if(egrep(string:os, pattern:"(12\.1\([0-9]*\)|12\.1)XB[0-9]*,"))ok=1;

# 12.1XC
if(egrep(string:os, pattern:"(12\.1\([0-9]*\)|12\.1)XC[0-9]*,"))ok=1;

# 12.1XF
if(egrep(string:os, pattern:"(12\.1\([0-9]*\)|12\.1)XF[0-9]*,"))ok=1;

# 12.1XG
if(egrep(string:os, pattern:"(12\.1\([0-9]*\)|12\.1)XG[0-9]*,"))ok=1;

# 12.1XH
if(egrep(string:os, pattern:"(12\.1\([0-9]*\)|12\.1)XH[0-9]*,"))ok=1;

# 12.1X1
if(egrep(string:os, pattern:"(12\.1\([0-9]*\)|12\.1)X1[0-9]*,"))ok=1;

# 12.1XJ
if(egrep(string:os, pattern:"(12\.1\([0-9]*\)|12\.1)XJ[0-9]*,"))ok=1;

# 12.1XL
if(egrep(string:os, pattern:"(12\.1\([0-9]*\)|12\.1)XL[0-9]*,"))ok=1;

# 12.1XM
if(egrep(string:os, pattern:"((12\.1\([0-4]\)|12\.1)XM[0-9]*|12\.1\(5\)XM[0-6]),"))ok=1;

# 12.1XP
if(egrep(string:os, pattern:"(12\.1\([0-9]*\)|12\.1)XP[0-9]*,"))ok=1;

# 12.1XQ
if(egrep(string:os, pattern:"(12\.1\([0-9]*\)|12\.1)XQ[0-9]*,"))ok=1;

# 12.1XT
if(egrep(string:os, pattern:"(12\.1\([0-9]*\)|12\.1)XT[0-9]*,"))ok=1;

# 12.1XU
if(egrep(string:os, pattern:"(12\.1\([0-9]*\)|12\.1)XU[0-9]*,"))ok=1;

# 12.1YB
if(egrep(string:os, pattern:"((12\.1\([0-4]\)|12\.1)YB[0-9]*|12\.1\(5\)YB[0-5]),"))ok=1;

# 12.1YC
if(egrep(string:os, pattern:"((12\.1\([0-4]\)|12\.1)YC[0-9]*|12\.1\(5\)YC[0-2]),"))ok=1;

# 12.1YD
if(egrep(string:os, pattern:"(12\.1\([0-9]*\)|12\.1)YD[0-9]*,"))ok=1;

# 12.1YE
if(egrep(string:os, pattern:"(12\.1\([0-9]*\)|12\.1)YE[0-9]*,"))ok=1;

# 12.1YF
if(egrep(string:os, pattern:"(12\.1\([0-9]*\)|12\.1)YF[0-9]*,"))ok=1;

# 12.1YI
if(egrep(string:os, pattern:"(12\.1\([0-9]*\)|12\.1)YI[0-9]*,"))ok=1;

# 12.2
if(egrep(string:os, pattern:"(12\.2\([0-6]\)|12\.2),"))ok=1;

# 12.B
if(egrep(string:os, pattern:"((12\.\([0-3]\)|12\.)B[0-9]*|12\.\(4\)B[0-2]),"))ok=1;

# 12.2BC
if(egrep(string:os, pattern:"((12\.2\([0-7]\)|12\.2)BC[0-9]*|12\.2\(8\)BC[0-0]),"))ok=1;

# 12.2DA
if(egrep(string:os, pattern:"(12\.2\([0-6]\)|12\.2)DA[0-9]*,"))ok=1;

# 12.2DD
if(egrep(string:os, pattern:"(12\.2\([0-9]*\)|12\.2)DD[0-9]*,"))ok=1;

# 12.2S
if(egrep(string:os, pattern:"(12\.2\(([0-6][^0-9]|7.[0-3])\)|12\.2)S[0-9]*,"))ok=1;

# 12.2T
if(egrep(string:os, pattern:"(12\.2\([0-7]\)|12\.2)T[0-9]*,"))ok=1;

# 12.2XA
if(egrep(string:os, pattern:"(12\.2\([0-9]*\)|12\.2)XA[0-9]*,"))ok=1;

# 12.2XB
if(egrep(string:os, pattern:"((12\.2\([0-1]\)|12\.2)XB[0-9]*|12\.2\(2\)XB[0-3]),"))ok=1;

# 12.2XD
if(egrep(string:os, pattern:"((12\.2\([0-0]\)|12\.2)XD[0-9]*|12\.2\(1\)XD[0-3]),"))ok=1;

# 12.2XE
if(egrep(string:os, pattern:"((12\.2\([0-0]\)|12\.2)XE[0-9]*|12\.2\(1\)XE[0-2]),"))ok=1;

# 12.2XF
if(egrep(string:os, pattern:"(12\.2\([0-9]*\)|12\.2)XF[0-9]*,"))ok=1;

# 12.2XG
if(egrep(string:os, pattern:"(12\.2\([0-9]*\)|12\.2)XG[0-9]*,"))ok=1;

# 12.2XH
if(egrep(string:os, pattern:"((12\.2\([0-1]\)|12\.2)XH[0-9]*|12\.2\(2\)XH[0-2]),"))ok=1;

# 12.2XI
if(egrep(string:os, pattern:"((12\.2\([0-1]\)|12\.2)XI[0-9]*|12\.2\(2\)XI[0-1]),"))ok=1;

# 12.2XJ
if(egrep(string:os, pattern:"(12\.2\([0-9]*\)|12\.2)XJ[0-9]*,"))ok=1;

# 12.2XK
if(egrep(string:os, pattern:"((12\.2\([0-1]\)|12\.2)XK[0-9]*|12\.2\(2\)XK[0-2]),"))ok=1;

# 12.2XL
if(egrep(string:os, pattern:"((12\.2\([0-3]\)|12\.2)XL[0-9]*|12\.2\(4\)XL[0-4]),"))ok=1;

# 12.2XM
if(egrep(string:os, pattern:"((12\.2\([0-3]\)|12\.2)XM[0-9]*|12\.2\(4\)XM[0-3]),"))ok=1;

# 12.2XN
if(egrep(string:os, pattern:"(12\.2\([0-9]*\)|12\.2)XN[0-9]*,"))ok=1;

# 12.2XQ
if(egrep(string:os, pattern:"(12\.2\([0-9]*\)|12\.2)XQ[0-9]*,"))ok=1;

# 12.2XR
if(egrep(string:os, pattern:"(12\.2\([0-9]*\)|12\.2)XR[0-9]*,"))ok=1;

# 12.2XS
if(egrep(string:os, pattern:"(12\.2\([0-9]*\)|12\.2)XS[0-9]*,"))ok=1;

# 12.2XT
if(egrep(string:os, pattern:"(12\.2\([0-9]*\)|12\.2)XT[0-9]*,"))ok=1;

# 12.2XW
if(egrep(string:os, pattern:"(12\.2\([0-9]*\)|12\.2)XW[0-9]*,"))ok=1;

# 12.2XW
if(egrep(string:os, pattern:"(12\.2\([0-9]*\)|12\.2)XW[0-9]*,"))ok=1;

# 12.2YA
if(egrep(string:os, pattern:"((12\.2\([0-3]\)|12\.2)YA[0-9]*|12\.2\(4\)YA[0-1]),"))ok=1;

# 12.2YB
if(egrep(string:os, pattern:"(12\.2\([0-9]*\)|12\.2)YB[0-9]*,"))ok=1;

# 12.2YC
if(egrep(string:os, pattern:"(12\.2\([0-9]*\)|12\.2)YC[0-9]*,"))ok=1;

# 12.2YD
if(egrep(string:os, pattern:"(12\.2\([0-9]*\)|12\.2)YD[0-9]*,"))ok=1;

# 12.2YF
if(egrep(string:os, pattern:"(12\.2\([0-9]*\)|12\.2)YF[0-9]*,"))ok=1;

# 12.2YG
if(egrep(string:os, pattern:"(12\.2\([0-3]\)|12\.2)YG[0-9]*,"))ok=1;

# 12.2YH
if(egrep(string:os, pattern:"(12\.2\([0-3]\)|12\.2)YH[0-9]*,"))ok=1;


#----------------------------------------------

if(ok)security_hole(port:161, proto:"udp");