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Kerberos 5 < 1.3.5 Multiple Vulnerabilities

2003-04-03T00:00:00
ID KERBEROS5_ISSUES.NASL
Type nessus
Reporter This script is Copyright (C) 2003-2018 Tenable Network Security, Inc.
Modified 2020-01-02T00:00:00

Description

The remote host is running Kerberos 5.

There are multiple flaws that affect this product. Make sure you are running the latest version with the latest patches.

Note that Nessus could not check for any of the flaws and solely relied on the presence of the service to issue an alert, so this might be a false positive.

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

# This script simply attempts to log into the realm FR.NESSUS.ORG
# with a username of "whatever". It does not check for any flaw (which
# is bad), but that may change in the future.
#

include("compat.inc");

if (description)
{
 script_id(11512);
 script_version("1.26");
 script_cvs_date("Date: 2018/07/12 19:01:16");

 script_cve_id(
   "CVE-2002-0036",
   "CVE-2003-0059",
   "CVE-2003-0060",
   "CVE-2003-0072",
   "CVE-2003-0082",
   "CVE-2003-0138",
   "CVE-2003-0139",
   "CVE-2004-0642",
   "CVE-2004-0643",
   "CVE-2004-0644",
   "CVE-2004-0772"
);
 script_bugtraq_id(
   6712,
   6713,
   6714,
   7184,
   7185,
   11078,
   11079
);
 script_xref(name:"RHSA", value:"2003:091-01");

 script_name(english:"Kerberos 5 < 1.3.5 Multiple Vulnerabilities");
 script_summary(english:"Check for kerberos");

 script_set_attribute(attribute:"synopsis", value:
"It may be possible to execute arbitrary code on the remote Kerberos
server.");
 script_set_attribute(attribute:"description", value:
"The remote host is running Kerberos 5.

There are multiple flaws that affect this product. Make sure you are
running the latest version with the latest patches.

Note that Nessus could not check for any of the flaws and solely
relied on the presence of the service to issue an alert, so this might
be a false positive.");
 script_set_attribute(attribute:"see_also", value:"http://www.nessus.org/u?34bb0fc8");
 script_set_attribute(attribute:"solution", value:"Upgrade to Kerberos 5 (krb5) 1.3.5 or later.");
 script_set_cvss_base_vector("CVSS2#AV:N/AC:L/Au:N/C:P/I:P/A:P");
 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(119);

 script_set_attribute(attribute:"vuln_publication_date", value:"2004/08/31");
 script_set_attribute(attribute:"patch_publication_date", value:"2004/08/31");
 script_set_attribute(attribute:"plugin_publication_date", value:"2003/04/03");

 script_set_attribute(attribute:"potential_vulnerability", value:"true");
 script_set_attribute(attribute:"plugin_type", value:"remote");
 script_end_attributes();

 script_category(ACT_GATHER_INFO);
 script_copyright(english:"This script is Copyright (C) 2003-2018 Tenable Network Security, Inc.");
 script_family(english:"Misc.");

 script_require_keys("Settings/ParanoidReport");

 exit(0);
}

include("audit.inc");
include("global_settings.inc");

if (report_paranoia < 2) audit(AUDIT_PARANOID);


name = "whatever";

len = strlen(name);
#len = 1024;
if(len > 256)
{
 len = raw_string(0x82, len / 256, len % 256);
#len = raw_string(0x84, 0x7F, 0xFF, 0xFF, 0xFF);
}
else len = raw_string(len % 256);

pk_lenE = 12 + strlen(name);
if(strlen(name) > 256)
 pk_lenE = raw_string(0x82, pk_lenE / 256, pk_lenE % 256);
else
 pk_lenE = raw_string( pk_lenE % 256);


pk_lenD = 186 + strlen(name);
if(strlen(name) > 256)pk_lenD += 14;
if(pk_lenD > 256)
 pk_lenD = raw_string(0x82, pk_lenD / 256, pk_lenD % 256);
else
 pk_lenD = raw_string(0x81, pk_lenD % 256);



pk_lenC = 183 + strlen(name);
if(strlen(name) > 256)pk_lenC += 12;
if(pk_lenC > 256)
 pk_lenC = raw_string(0x82, pk_lenC / 256, pk_lenC % 256);
else
 pk_lenC = raw_string(0x81, pk_lenC % 256);


pk_lenB = 170 + strlen(name);
if(strlen(name) > 256)pk_lenB += 10;
if(pk_lenB > 256)
 pk_lenB = raw_string(0x82, pk_lenB / 256, pk_lenB % 256);
else
 pk_lenB = raw_string(0x81, pk_lenB % 256);


pk_lenA = 167 + strlen(name);
if(strlen(name) > 256)pk_lenA += 8;
if(pk_lenA > 256)
 pk_lenA = raw_string(0x82, pk_lenA / 256, pk_lenA % 256);
else
 pk_lenA = raw_string(0x81, pk_lenA % 256);


pk_len0 = 11 + strlen(name);
if(strlen(name) > 256) pk_len0 += 6;
if(pk_len0 > 256)
{
 pk_len0 = raw_string(0x82, pk_len0 / 256, pk_len0 % 256);
}
else pk_len0 = raw_string(pk_len0 % 256);

pk_len1 = 4 + strlen(name);
if(strlen(name) > 256) pk_len1 += 4;
if(pk_len1 > 256)
{
 pk_len1 = raw_string(0x82, pk_len1 / 256, pk_len1 % 256);
}
else pk_len1 = raw_string(pk_len1 % 256);

pk_len2 = 2 + strlen(name);
if(strlen(name) > 256) pk_len2 += 2;

if(pk_len2 > 256)
{
 pk_len2 = raw_string(0x82, pk_len2 / 256, pk_len2 % 256);
}
else pk_len2 = raw_string(pk_len2 % 256);



req = raw_string(
		 0x6A) + pk_lenD + raw_string(0x30)+ pk_lenC + raw_string(0xA1, 0x03,
		 0x02, 0x01, 0x05, 0xA2, 0x03,
		 0x02, 0x01, 0x0A, 0xA4) + pk_lenB + raw_string(0x30) + pk_lenA +
		 raw_string(
		 0xA0, 0x07, 0x03, 0x05, # ??
		 0x00, 0x00, 0x00, 0x00, 0x00, 0xA1)+ pk_lenE + raw_string(
		 0x30) + pk_len0 + raw_string(0xA0, 0x03,
		 0x02, 0x01, 0x01,
		 0xA1) + pk_len1 + raw_string( 0x30) + pk_len2 +
		 raw_string(0x1B) + len + name + raw_string(
		 0xA2, 0x0F, 0x1B, 0x0D,
		 0x46, 0x52, 0x2E, 0x4E, 0x45, 0x53, 0x53, 0x55,
		 0x53, 0x2E, 0x4F, 0x52, 0x47, 0xA3, 0x22, 0x30,
		 0x20, 0xA0, 0x03, 0x02, 0x01, 0x00, 0xA1, 0x19,
		 0x30, 0x17, 0x1B, 0x06, 0x6B, 0x72, 0x62, 0x74,
		 0x67, 0x74, 0x1B, 0x0D, 0x46, 0x52, 0x2E, 0x4E,
		 0x45, 0x53, 0x53, 0x55, 0x53, 0x2E, 0x4F, 0x52,
		 0x47, 0xA4, 0x11, 0x18, 0x0F, 0x32, 0x30, 0x30,
		 0x33, 0x30, 0x34, 0x30, 0x33, 0x31, 0x32, 0x35,
		 0x37, 0x33, 0x38, 0x5A, 0xA5, 0x11, 0x18, 0x0F,
		 0x32, 0x30, 0x30, 0x33, 0x30, 0x34, 0x30, 0x33,
		 0x32, 0x32, 0x35, 0x37, 0x33, 0x38, 0x5A, 0xA7,
		 0x06, 0x02, 0x04, 0x3E, 0x8c, 0x2f, 0xC2, 0xA8,
		 0x08, 0x30, 0x06, 0x02, 0x01, 0x10, 0x02, 0x01,
		 0x01, 0xA9, 0x20, 0x30, 0x1E, 0x30, 0x0D, 0xA0,
		 0x03, 0x02, 0x01, 0x02, 0xA1, 0x06, 0x04, 0x04,
		 0x0A, 0xA3, 0x9c, 0x12, 0x30, 0x0D, 0xA0, 0x03,
		 0x02, 0x01, 0x02, 0xA1, 0x06, 0x04, 0x04, 0x0A,
		 0xA3, 0x9F, 0x01);


foreach port (make_list(88, 750))
if (get_udp_port_state(port))
{
 soc = open_sock_udp(port);
 send(socket:soc, data:req);
 r = recv(socket:soc, length:4096);
 close(soc);

 if(strlen(r) > 10 && ord(r[10]) == 5)
 {
 security_hole(port:port, proto:"udp");
 }
}
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