Vulnerabilities > CVE-2009-1628 - Buffer Errors vulnerability in Unisys Business Information Server 10/10.1

047910
CVSS 10.0 - CRITICAL
Attack vector
NETWORK
Attack complexity
LOW
Privileges required
NONE
Confidentiality impact
COMPLETE
Integrity impact
COMPLETE
Availability impact
COMPLETE
network
low complexity
unisys
microsoft
CWE-119
critical
nessus

Summary

Stack-based buffer overflow in mnet.exe in Unisys Business Information Server (BIS) 10 and 10.1 on Windows allows remote attackers to execute arbitrary code via a crafted TCP packet.

Vulnerable Configurations

Part Description Count
Application
Unisys
2
OS
Microsoft
1

Common Attack Pattern Enumeration and Classification (CAPEC)

  • Buffer Overflow via Environment Variables
    This attack pattern involves causing a buffer overflow through manipulation of environment variables. Once the attacker finds that they can modify an environment variable, they may try to overflow associated buffers. This attack leverages implicit trust often placed in environment variables.
  • Overflow Buffers
    Buffer Overflow attacks target improper or missing bounds checking on buffer operations, typically triggered by input injected by an attacker. As a consequence, an attacker is able to write past the boundaries of allocated buffer regions in memory, causing a program crash or potentially redirection of execution as per the attackers' choice.
  • Client-side Injection-induced Buffer Overflow
    This type of attack exploits a buffer overflow vulnerability in targeted client software through injection of malicious content from a custom-built hostile service.
  • Filter Failure through Buffer Overflow
    In this attack, the idea is to cause an active filter to fail by causing an oversized transaction. An attacker may try to feed overly long input strings to the program in an attempt to overwhelm the filter (by causing a buffer overflow) and hoping that the filter does not fail securely (i.e. the user input is let into the system unfiltered).
  • MIME Conversion
    An attacker exploits a weakness in the MIME conversion routine to cause a buffer overflow and gain control over the mail server machine. The MIME system is designed to allow various different information formats to be interpreted and sent via e-mail. Attack points exist when data are converted to MIME compatible format and back.

Nessus

NASL familyWindows
NASL idUNISYS_BIS_STACK_OVERFLOW.NASL
descriptionUnisys Business Information Server is installed on the remote system. The installed version is affected by a stack overflow vulnerability. By sending a specially crafted request to the remote service, an attacker may be able to overflow the stack, and potentially execute arbitrary code with system level privileges.
last seen2020-06-01
modified2020-06-02
plugin id42844
published2009-11-18
reporterThis script is Copyright (C) 2009-2018 Tenable Network Security, Inc.
sourcehttps://www.tenable.com/plugins/nessus/42844
titleUnisys Business Information Server Stack Overflow
code
#
# (C) Tenable Network Security, Inc.
#


include("compat.inc");

if (description)
{
  script_id(42844);
  script_version("1.12");
 script_cvs_date("Date: 2018/11/15 20:50:29");

  script_cve_id("CVE-2009-1628");
  script_bugtraq_id(35494);
  script_xref(name:"Secunia", value:"35572");

  script_name(english:"Unisys Business Information Server Stack Overflow");
  script_summary(english:"Checks version of mnet.exe");

  script_set_attribute(attribute:"synopsis", value:
"The remote Windows host contains an application that is affected by a
stack overflow vulnerability.");

  script_set_attribute(attribute:"description", value:
"Unisys Business Information Server is installed on the remote system.

The installed version is affected by a stack overflow vulnerability.
By sending a specially crafted request to the remote service, an
attacker may be able to overflow the stack, and potentially execute
arbitrary code with system level privileges.");

   # http://www.verisigninc.com/en_US/products-and-services/network-intelligence-availability/idefense/public-vulnerability-reports/articles/index.xhtml?id=808
  script_set_attribute(attribute:"see_also", value:"http://www.nessus.org/u?5fd5fcc6");
  script_set_attribute(attribute:"see_also", value:"https://seclists.org/fulldisclosure/2009/Jun/252" );
  script_set_attribute(attribute:"see_also", value:"ftp://ftp.support.unisys.com/pub/mapper/NT/BIS10.1/Readme.txt" );

  script_set_attribute(attribute:"solution", value:"Apply vendor-supplied patches.");
 script_set_cvss_base_vector("CVSS2#AV:N/AC:L/Au:N/C:C/I:C/A:C");
 script_set_cvss_temporal_vector("CVSS2#E:F/RL:OF/RC:C");
 script_set_attribute(attribute:"exploitability_ease", value:"Exploits are available");
 script_set_attribute(attribute:"exploit_available", value:"true");
 script_set_attribute(attribute:"exploit_framework_core", value:"true");
 script_cwe_id(119);

  script_set_attribute(attribute:"vuln_publication_date", value:"2009/06/25");
  script_set_attribute(attribute:"patch_publication_date", value:"2009/06/25");
  script_set_attribute(attribute:"plugin_publication_date", value:"2009/11/18");

  script_set_attribute(attribute:"plugin_type", value:"local");
  script_set_attribute(attribute:"cpe", value:"cpe:/a:unisys:business_information_server");
  script_end_attributes();

  script_category(ACT_GATHER_INFO);
  script_family(english:"Windows");

  script_copyright(english:"This script is Copyright (C) 2009-2018 Tenable Network Security, Inc.");

  script_dependencies( "smb_hotfixes.nasl","unisys_bis_detect.nasl");
  script_require_keys("SMB/Registry/Enumerated");
  script_require_ports(139, 445,3986,"Services/unisys-bis");

  exit(0);
}


include("smb_func.inc");
include("audit.inc");
include("smb_hotfixes.inc");

if(report_paranoia < 2)
{
 if(!get_kb_item("Services/unisys-bis")) exit(0, "The 'Services/unisys-bis' KB item is missing.");
}

if (!get_kb_item("SMB/Registry/Enumerated")) exit(1, "The 'SMB/Registry/Enumerated' KB item is missing.");

# Connect to the appropriate share.
name    =  kb_smb_name();
port    =  kb_smb_transport();
login   =  kb_smb_login();
pass    =  kb_smb_password();
domain  =  kb_smb_domain();


if(! smb_session_init()) audit(AUDIT_FN_FAIL, 'smb_session_init');
rc = NetUseAdd(login:login, password:pass, domain:domain, share:"IPC$");
if (rc != 1) {
  NetUseDel();
  exit(1,"Can't connect to IPC$ share.");
}

# Connect to remote registry.
hklm = RegConnectRegistry(hkey:HKEY_LOCAL_MACHINE);
if (isnull(hklm))
{
  NetUseDel();
   exit(1,"Can't connect to remote registry.");
}


key = "SOFTWARE\Unisys Corporation\Business Information Server";
key_h = RegOpenKey(handle:hklm, key:key, mode:MAXIMUM_ALLOWED);
if (isnull(key_h))
{
  RegCloseKey(handle:hklm);
  NetUseDel();
  exit(0, "Unisys BIS is not installed.");
}

# Find where it's installed.
path = NULL;

key = "SOFTWARE\Unisys\MAPPER System";
key_h = RegOpenKey(handle:hklm, key:key, mode:MAXIMUM_ALLOWED);
if (!isnull(key_h))
{
  value = RegQueryValue(handle:key_h, item:"SharedComponentsPath");
  if (!isnull(value)) path = value[1];

  RegCloseKey(handle:key_h);
}

RegCloseKey(handle:hklm);

if (isnull(path))
{
  NetUseDel();
  exit(1, "Could not get path.");
}

# Grab the file version of file mnet.exe

share = ereg_replace(pattern:"^([A-Za-z]):.*", replace:"\1$", string:path);
exe =  ereg_replace(pattern:"^[A-Za-z]:(.*)", replace:"\1\mnet.exe", string:path);

NetUseDel(close:FALSE);

rc = NetUseAdd(login:login, password:pass, domain:domain, share:share);
if (rc != 1)
{
  NetUseDel();
  exit(1, "Can't connect to "+share+" share.");
}

fh = CreateFile(
  file:exe,
  desired_access:GENERIC_READ,
  file_attributes:FILE_ATTRIBUTE_NORMAL,
  share_mode:FILE_SHARE_READ,
  create_disposition:OPEN_EXISTING
);
if (!isnull(fh))
{
  ver = GetFileVersion(handle:fh);
  CloseFile(handle:fh);
}

NetUseDel();

# Check the version number.
if (!isnull(ver))
{
  fixed_version  = "10.1.7.0";
  fix = split(fixed_version, sep:'.', keep:FALSE);
  for (i=0; i<max_index(fix); i++)
  fix[i] = int(fix[i]);

  for (i=0; i<max_index(ver); i++)
   if ((ver[i] < fix[i]))
   {
     if (report_verbosity > 0)
      {
        version = string(ver[0],".",ver[1],".",ver[2],".",ver[3]);
        report = string(
          "\n",
          "File              : ", path, "\\mnet.exe\n",
          "Installed version : ", version, "\n",
          "Fixed version     : ", fixed_version, "\n"
        );
        security_hole(port:port, extra:report);
      }
      else security_hole(port);
      exit(0);
   }
    else if (ver[i] > fix[i])
      break;

 exit(0, "mnet.exe version "+version+" is installed and not vulnerable.");
}
else exit(1, "Can't get file version of 'mnet.exe'.");

Saint

bid35494
descriptionUnisys Business Information Server mnet.exe buffer overflow
idmisc_unisysbisbo
osvdb55435
titleunisys_bis_mnet
typeremote