Vulnerabilities > CVE-2011-1049 - Buffer Errors vulnerability in Hex-Rays IDA 5.7/6.0

047910
CVSS 6.8 - MEDIUM
Attack vector
NETWORK
Attack complexity
MEDIUM
Privileges required
NONE
Confidentiality impact
PARTIAL
Integrity impact
PARTIAL
Availability impact
PARTIAL
network
hex-rays
CWE-119
nessus

Summary

Buffer overflow in the Mach-O input file loader in Hex-Rays IDA Pro 5.7 and 6.0 allows user-assisted remote attackers to cause a denial of service (crash) and possibly execute arbitrary code via a crafted Macho-O file.

Vulnerable Configurations

Part Description Count
Application
Hex-Rays
2

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 idIDA_PRO_MACHO_BOF.NASL
descriptionThe version of IDA Pro, an interactive disassembler, installed on the remote host is either 5.7 or 6.0 and includes a version of the Mach-O loader that is affected by a buffer overflow vulnerability. By tricking a user into opening a specially crafted Mac OS X Mach-O file using the affected loader, it may be possible for the attacker to execute arbitrary code subject to the user
last seen2020-06-01
modified2020-06-02
plugin id51938
published2011-02-10
reporterThis script is Copyright (C) 2011-2018 Tenable Network Security, Inc.
sourcehttps://www.tenable.com/plugins/nessus/51938
titleIDA Pro Mach-O Loader Buffer Overflow
code
#
# (C) Tenable Network Security, Inc.
#

include("compat.inc");

if (description)
{
  script_id(51938);
  script_version("1.10");
  script_cvs_date("Date: 2018/07/12 19:01:17");

  script_cve_id("CVE-2011-1049");
  script_bugtraq_id(46308);

  script_name(english:"IDA Pro Mach-O Loader Buffer Overflow");
  script_summary(english:"Checks macho.ldw for patch");

  script_set_attribute(attribute:"synopsis", value:
"The remote host contains an application with a buffer overflow
vulnerability.");
  script_set_attribute(attribute:"description", value:
"The version of IDA Pro, an interactive disassembler, installed on the
remote host is either 5.7 or 6.0 and includes a version of the Mach-O
loader that is affected by a buffer overflow vulnerability.

By tricking a user into opening a specially crafted Mac OS X Mach-O
file using the affected loader, it may be possible for the attacker to
execute arbitrary code subject to the user's privileges.");
  script_set_attribute(attribute:"see_also", value:"https://www.hex-rays.com/vulnfix.shtml");
  script_set_attribute(attribute:"solution", value:"Apply the vendor's Mach-O loader fix.");
 script_set_cvss_base_vector("CVSS2#AV:N/AC:H/Au:N/C:C/I:C/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:"2011/02/09");
  script_set_attribute(attribute:"patch_publication_date", value:"2011/02/09");
  script_set_attribute(attribute:"plugin_publication_date", value:"2011/02/10");

  script_set_attribute(attribute:"plugin_type", value:"local");
  script_end_attributes();

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

  script_copyright(english:"This script is Copyright (C) 2011-2018 Tenable Network Security, Inc.");

  script_dependencies("smb_hotfixes.nasl");
  script_require_keys("SMB/Registry/Enumerated");
  script_require_ports(139, 445);

  exit(0);
}

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

get_kb_item_or_exit("SMB/Registry/Enumerated");
get_kb_item_or_exit("SMB/Registry/HKLM/SOFTWARE/Microsoft/Windows/CurrentVersion/Uninstall/IDA Pro_is1/DisplayName");


# 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.");
}


# Check whether it's installed.
path = NULL;

key = "SOFTWARE\Microsoft\Windows\CurrentVersion\Uninstall\IDA Pro_is1";
key_h = RegOpenKey(handle:hklm, key:key, mode:MAXIMUM_ALLOWED);
if (!isnull(key_h))
{
  value = RegQueryValue(handle:key_h, item:"InstallLocation");
  if (!isnull(value))
  {
    path = value[1];
    path = ereg_replace(pattern:"^(.+)\\$", replace:"\1", string:path);
  }
  RegCloseKey(handle:key_h);
}
RegCloseKey(handle:hklm);

if (isnull(path))
{
  NetUseDel();
  exit(0, "IDA Pro is not installed.");
}


# Check for the affected loader file.
share = ereg_replace(pattern:"^([A-Za-z]):.*", replace:"\1$", string:path);
exe =  ereg_replace(pattern:"^[A-Za-z]:(.*)", replace:"\1\idag.exe", string:path);
ldw =  ereg_replace(pattern:"^[A-Za-z]:(.*)", replace:"\1\loaders\macho.ldw", 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))
{
  NetUseDel();
  exit(0, "Failed to open '"+(share-'$')+":"+exe+"'.");
}
ver = GetFileVersion(handle:fh);
CloseFile(handle:fh);

if (isnull(ver))
{
  NetUseDel();
  exit(1, "Couldn't get file version of '"+(share-'$')+":"+exe+"'.");
}


# Only versions 5.7 and 6.0 are affected.
version = ver[0] + '.' + ver[1];

if (
  (ver[0] == 5 && ver[1] == 7) ||
  (ver[0] == 6 && ver[1] == 0)
)
{
  # Read the affected loader looking for signs it's been patched.
  fh = CreateFile(
    file:ldw,
    desired_access:GENERIC_READ,
    file_attributes:FILE_ATTRIBUTE_NORMAL,
    share_mode:FILE_SHARE_READ,
    create_disposition:OPEN_EXISTING
  );
  if (isnull(fh))
  {
    NetUseDel();
    exit(0, "Failed to open '"+(share-'$')+":"+ldw+"'.");
  }

  magic1 = 'Bad information in exports, it will be ignored.';
  magic2 = 'FENO SUCH TAG';

  fsize = GetFileSize(handle:fh);
  ofs = 0;
  chunk = 16384;
  patched = FALSE;

  while (fsize > 0 && ofs <= fsize && !patched)
  {
    data = ReadFile(handle:fh, length:chunk, offset:ofs);
    if (strlen(data) == 0) break;
    data = str_replace(find:raw_string(0), replace:"", string:data);

    if (magic1 >< data || magic2 >< data) patched = TRUE;

    # nb: re-read a little bit to make sure we didn't start reading
    #     in the middle of one of our strings.
    ofs += chunk - strlen(magic1);
  }
  CloseFile(handle:fh);
  NetUseDel();

  if (!patched)
  {
    if (report_verbosity > 0)
    {
      report =
        '\n  Path              : ' + path +
        '\n  Loader            : ' + (share-'$') + ":" + ldw +
        '\n  Installed version : ' + version + '\n';
      security_hole(port:port, extra:report);
    }
    else security_hole(port);
    exit(0);
  }
}
else
{
  NetUseDel();
  exit(0, "IDA Pro version "+version+" is installed and not affected.");
}