Vulnerabilities > CVE-2011-2010 - Permissions, Privileges, and Access Controls vulnerability in Microsoft products

047910
CVSS 7.2 - HIGH
Attack vector
LOCAL
Attack complexity
LOW
Privileges required
NONE
Confidentiality impact
COMPLETE
Integrity impact
COMPLETE
Availability impact
COMPLETE
local
low complexity
microsoft
CWE-264
nessus

Summary

The Microsoft Office Input Method Editor (IME) for Simplified Chinese in Microsoft Pinyin IME 2010, Office Pinyin SimpleFast Style 2010, and Office Pinyin New Experience Style 2010 does not properly restrict access to configuration options, which allows local users to gain privileges via the Microsoft Pinyin (aka MSPY) IME toolbar, aka "Pinyin IME Elevation Vulnerability."

Common Attack Pattern Enumeration and Classification (CAPEC)

  • Accessing, Modifying or Executing Executable Files
    An attack of this type exploits a system's configuration that allows an attacker to either directly access an executable file, for example through shell access; or in a possible worst case allows an attacker to upload a file and then execute it. Web servers, ftp servers, and message oriented middleware systems which have many integration points are particularly vulnerable, because both the programmers and the administrators must be in synch regarding the interfaces and the correct privileges for each interface.
  • Leverage Executable Code in Non-Executable Files
    An attack of this type exploits a system's trust in configuration and resource files, when the executable loads the resource (such as an image file or configuration file) the attacker has modified the file to either execute malicious code directly or manipulate the target process (e.g. application server) to execute based on the malicious configuration parameters. Since systems are increasingly interrelated mashing up resources from local and remote sources the possibility of this attack occurring is high. The attack can be directed at a client system, such as causing buffer overrun through loading seemingly benign image files, as in Microsoft Security Bulletin MS04-028 where specially crafted JPEG files could cause a buffer overrun once loaded into the browser. Another example targets clients reading pdf files. In this case the attacker simply appends javascript to the end of a legitimate url for a pdf (http://www.gnucitizen.org/blog/danger-danger-danger/) http://path/to/pdf/file.pdf#whatever_name_you_want=javascript:your_code_here The client assumes that they are reading a pdf, but the attacker has modified the resource and loaded executable javascript into the client's browser process. The attack can also target server processes. The attacker edits the resource or configuration file, for example a web.xml file used to configure security permissions for a J2EE app server, adding role name "public" grants all users with the public role the ability to use the administration functionality. The server trusts its configuration file to be correct, but when they are manipulated, the attacker gains full control.
  • Blue Boxing
    This type of attack against older telephone switches and trunks has been around for decades. A tone is sent by an adversary to impersonate a supervisor signal which has the effect of rerouting or usurping command of the line. While the US infrastructure proper may not contain widespread vulnerabilities to this type of attack, many companies are connected globally through call centers and business process outsourcing. These international systems may be operated in countries which have not upgraded Telco infrastructure and so are vulnerable to Blue boxing. Blue boxing is a result of failure on the part of the system to enforce strong authorization for administrative functions. While the infrastructure is different than standard current applications like web applications, there are historical lessons to be learned to upgrade the access control for administrative functions.
  • Restful Privilege Elevation
    Rest uses standard HTTP (Get, Put, Delete) style permissions methods, but these are not necessarily correlated generally with back end programs. Strict interpretation of HTTP get methods means that these HTTP Get services should not be used to delete information on the server, but there is no access control mechanism to back up this logic. This means that unless the services are properly ACL'd and the application's service implementation are following these guidelines then an HTTP request can easily execute a delete or update on the server side. The attacker identifies a HTTP Get URL such as http://victimsite/updateOrder, which calls out to a program to update orders on a database or other resource. The URL is not idempotent so the request can be submitted multiple times by the attacker, additionally, the attacker may be able to exploit the URL published as a Get method that actually performs updates (instead of merely retrieving data). This may result in malicious or inadvertent altering of data on the server.
  • Target Programs with Elevated Privileges
    This attack targets programs running with elevated privileges. The attacker would try to leverage a bug in the running program and get arbitrary code to execute with elevated privileges. For instance an attacker would look for programs that write to the system directories or registry keys (such as HKLM, which stores a number of critical Windows environment variables). These programs are typically running with elevated privileges and have usually not been designed with security in mind. Such programs are excellent exploit targets because they yield lots of power when they break. The malicious user try to execute its code at the same level as a privileged system call.

Msbulletin

bulletin_idMS11-088
bulletin_url
date2011-12-13T00:00:00
impactElevation of Privilege
knowledgebase_id2652016
knowledgebase_url
severityImportant
titleVulnerability in Microsoft Office IME (Chinese) Could Allow Elecation of Privilege

Nessus

NASL familyWindows : Microsoft Bulletins
NASL idSMB_NT_MS11-088.NASL
descriptionThe version of Microsoft Office Input Method Editor (Chinese) installed on the remote host has a privilege escalation vulnerability. A local attacker could exploit this by utilizing the MSPY IME toolbar in an unspecified manner, resulting in arbitrary code execution in kernel mode.
last seen2020-06-01
modified2020-06-02
plugin id57274
published2011-12-13
reporterThis script is Copyright (C) 2011-2018 Tenable Network Security, Inc.
sourcehttps://www.tenable.com/plugins/nessus/57274
titleMS11-088: Vulnerability in Microsoft Office IME (Chinese) Could Allow Elevation of Privilege (2652016)
code
#
# (C) Tenable Network Security, Inc.
#


include("compat.inc");


if (description)
{
  script_id(57274);
  script_version("1.15");
  script_cvs_date("Date: 2018/11/15 20:50:31");

  script_cve_id("CVE-2011-2010");
  script_bugtraq_id(50950);
  script_xref(name:"MSFT", value:"MS11-088");
  script_xref(name:"IAVB", value:"2011-B-0146");
  script_xref(name:"MSKB", value:"2596511");
  script_xref(name:"MSKB", value:"2647540");

  script_name(english:"MS11-088: Vulnerability in Microsoft Office IME (Chinese) Could Allow Elevation of Privilege (2652016)");
  script_summary(english:"Checks version of Imsccfg.dll and Imsccore.dll");

  script_set_attribute(
    attribute:"synopsis",
    value:
"The version of Microsoft Office installed on the remote Windows host
has a privilege escalation vulnerability."
  );
  script_set_attribute(
    attribute:"description",
    value:
"The version of Microsoft Office Input Method Editor (Chinese)
installed on the remote host has a privilege escalation vulnerability.
A local attacker could exploit this by utilizing the MSPY IME toolbar
in an unspecified manner, resulting in arbitrary code execution in
kernel mode."
  );
  script_set_attribute(attribute:"see_also", value:"https://docs.microsoft.com/en-us/security-updates/SecurityBulletins/2011/ms11-088");
  script_set_attribute(
    attribute:"solution",
    value:
"Microsoft has released a set of patches for Pinyin IME 2010, Office
Pinyin SimpleFast Style 2010, and Office Pinyin New Experience Style
2010."
  );
 script_set_cvss_base_vector("CVSS2#AV:L/AC:L/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:"2011/12/13");
  script_set_attribute(attribute:"patch_publication_date", value:"2011/12/13");
  script_set_attribute(attribute:"plugin_publication_date", value:"2011/12/13");

  script_set_attribute(attribute:"plugin_type", value:"local");
  script_set_attribute(attribute:"cpe", value:"cpe:/a:microsoft:pinyin_simple_fast_style");
  script_set_attribute(attribute:"cpe", value:"cpe:/a:microsoft:office");
  script_set_attribute(attribute:"stig_severity", value:"II");
  script_end_attributes();

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

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

  script_dependencies("smb_hotfixes.nasl", "ms_bulletin_checks_possible.nasl");
  script_require_keys("SMB/MS_Bulletin_Checks/Possible");
  script_require_ports(139, 445, "Host/patch_management_checks");

  exit(0);
}

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

get_kb_item_or_exit('SMB/MS_Bulletin_Checks/Possible');

bulletin = 'MS11-088';
kbs = make_list('2596511', '2647540');

if (get_kb_item('Host/patch_management_checks')) hotfix_check_3rd_party(bulletin:bulletin, kbs:kbs, severity:SECURITY_HOLE);

common = hotfix_get_officecommonfilesdir(officever:"14.0");
if (!common) exit(1, 'hotfix_get_officecommonfilesdir() failed.');

share = hotfix_path2share(path:common);
ime_path = common + "\Microsoft Shared\IME14\IMESC";      # Pinyin IME bundled with Office 2010 Chinese
styles_path = common + "\Microsoft Shared\IME14WR\IMESC"; # Pinyin SimpleFast & New Experience Style (MSPY2010)

if (!is_accessible_share(share:share)) exit(1, 'Unable to connect to ' + share + ' share.');

# it's possible that both KBs need to be installed on the same system
res1 = hotfix_is_vulnerable(path:ime_path, file:"Imsccore.dll", version:"14.0.6009.1000", min_version:"14.0.0.0", bulletin:bulletin, kb:"2596511");
res2 = hotfix_is_vulnerable(path:styles_path, file:"Imsccfg.dll", version:"14.0.5810.1000", min_version:"14.0.0.0", bulletin:bulletin, kb:"2647540");

if (res1 || res2)
{
  set_kb_item(name:'SMB/Missing/'+bulletin, value:TRUE);
  hotfix_security_hole();
  hotfix_check_fversion_end();
  exit(0);
}
else
{
  hotfix_check_fversion_end();
  exit(0, 'The host is not affected.');
}

Seebug

bulletinFamilyexploit
descriptionBUGTRAQ ID: 50950 CVE ID: CVE-2011-2010 Microsoft Office IME (CN)是微软的中文输入系统。 Microsoft Office IME (CN)错误公开了不能在安全桌面上运行的配置选项,在实现上存在权限提升漏洞,本地攻击者可利用此漏洞以内核权限执行任意代码,成功利用后可完全控制受影响计算机 Microsoft Pinyin IME 2010 厂商补丁: Microsoft --------- Microsoft已经为此发布了一个安全公告(MS11-088)以及相应补丁: MS11-088:Vulnerability in Microsoft Office IME (Chinese) Could Allow Elevation of Privilege (2652016) 链接:http://www.microsoft.com/technet/security/bulletin/MS11-088.asp
idSSV:26060
last seen2017-11-19
modified2011-12-15
published2011-12-15
reporterRoot
titleMicrosoft中文输入系统(Pinyin IME)本地权限提升漏洞(MS11-088)