Vulnerabilities > CVE-2014-2778 - Improper Restriction of Operations within the Bounds of a Memory Buffer vulnerability in Microsoft Office Compatibility Pack and Word

047910
CVSS 0.0 - NONE
Attack vector
UNKNOWN
Attack complexity
UNKNOWN
Privileges required
UNKNOWN
Confidentiality impact
UNKNOWN
Integrity impact
UNKNOWN
Availability impact
UNKNOWN
microsoft
CWE-119
nessus
NVD
Published: 2014-06-11
Updated: 2024-11-21

Summary

Microsoft Word 2007 SP3 and Office Compatibility Pack SP3 allow remote attackers to execute arbitrary code or cause a denial of service (memory corruption) via a crafted embedded font in a (1) .doc or (2) .docx document, aka "Embedded Font Vulnerability."

Vulnerable Configurations

Part Description Count
Application
Microsoft
2

Common Weakness Enumeration (CWE)

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.

Msbulletin

bulletin_idMS14-034
bulletin_url
date2014-06-10T00:00:00
impactRemote Code Execution
knowledgebase_id2969261
knowledgebase_url
severityImportant
titleVulnerability in Microsoft Word Could Allow Remote Code Execution

Nessus

NASL familyWindows : Microsoft Bulletins
NASL idSMB_NT_MS14-034.NASL
descriptionThe remote Windows host has a version of Microsoft Word or Office Compatibility Pack that is affected by an unspecified memory corruption vulnerability. By tricking a user into opening a specially crafted file, it may be possible for a remote attacker to take complete control of the system or execute arbitrary code.
last seen2020-06-01
modified2020-06-02
plugin id74426
published2014-06-11
reporterThis script is Copyright (C) 2014-2018 Tenable Network Security, Inc.
sourcehttps://www.tenable.com/plugins/nessus/74426
titleMS14-034: Vulnerability in Microsoft Word Could Allow Remote Code Execution (2969261)
code
#
# (C) Tenable Network Security, Inc.
#

include("compat.inc");

if (description)
{
  script_id(74426);
  script_version("1.9");
  script_cvs_date("Date: 2018/11/15 20:50:31");

  script_cve_id("CVE-2014-2778");
  script_bugtraq_id(67896);
  script_xref(name:"MSFT", value:"MS14-034");
  script_xref(name:"MSKB", value:"2880513");
  script_xref(name:"MSKB", value:"2880515");

  script_name(english:"MS14-034: Vulnerability in Microsoft Word Could Allow Remote Code Execution (2969261)");
  script_summary(english:"Checks Word 2007 version");

  script_set_attribute(attribute:"synopsis", value:"The remote host is affected by a memory corruption vulnerability.");
  script_set_attribute(attribute:"description", value:
"The remote Windows host has a version of Microsoft Word or Office
Compatibility Pack that is affected by an unspecified memory
corruption vulnerability. By tricking a user into opening a specially
crafted file, it may be possible for a remote attacker to take
complete control of the system or execute arbitrary code.");
  script_set_attribute(attribute:"see_also", value:"https://docs.microsoft.com/en-us/security-updates/SecurityBulletins/2014/ms14-034");
  script_set_attribute(attribute:"solution", value:
"Microsoft has released a set of patches for Office 2007 and Office
Compatibility Pack.");
  script_set_cvss_base_vector("CVSS2#AV:N/AC:M/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:"2014/06/10");
  script_set_attribute(attribute:"patch_publication_date", value:"2014/06/10");
  script_set_attribute(attribute:"plugin_publication_date", value:"2014/06/11");

  script_set_attribute(attribute:"plugin_type", value:"local");
  script_set_attribute(attribute:"cpe", value:"cpe:/a:microsoft:office");
  script_set_attribute(attribute:"cpe", value:"cpe:/a:microsoft:word");
  script_set_attribute(attribute:"cpe", value:"cpe:/a:microsoft:office_compatibility_pack");
  script_end_attributes();

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

  script_copyright(english:"This script is Copyright (C) 2014-2018 Tenable Network Security, Inc.");

  script_dependencies("office_installed.nasl", "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("audit.inc");
include("smb_func.inc");
include("smb_hotfixes.inc");
include("smb_hotfixes_fcheck.inc");
include("smb_reg_query.inc");
include("misc_func.inc");

get_kb_item_or_exit("SMB/MS_Bulletin_Checks/Possible");

bulletin = 'MS14-034';
kbs = make_list(
  2880513, # Office 2007 Compatibility Pack
  2880515  # Word 2007
);
if (get_kb_item("Host/patch_management_checks")) hotfix_check_3rd_party(bulletin:bulletin, kbs:kbs, severity:SECURITY_HOLE);

vuln = FALSE;

# Word
kb = "";
installs = get_kb_list("SMB/Office/Word/*/ProductPath");
if (!isnull(installs))
{
  foreach install (keys(installs))
  {
    version = install - 'SMB/Office/Word/' - '/ProductPath';
    path = installs[install];
    info = "";

    ver = split(version, sep:'.', keep:FALSE);
    for (i=0; i<max_index(ver); i++)
    ver[i] = int(ver[i]);

    # Word 2007
    if (
      ver[0] == 12 && ver[1] == 0 &&
      (
        ver[2] < 6700 ||
        (ver[2] == 6700 && ver[3] < 5000)
      )
    )
    {
      office_sp = get_kb_item("SMB/Office/2007/SP");
      if (!isnull(office_sp) && office_sp == 3)
      {
        info =
          '\n  Product           : Word 2007 SP3' +
          '\n  File              : ' + path +
          '\n  Installed version : ' + version +
          '\n  Fixed version     : 12.0.6700.5000' + '\n';
        kb = "2880515";
      }
    }

    if (info)
    {
      hotfix_add_report(info, bulletin:bulletin, kb:kb);
      vuln = TRUE;
    }
  }
}

# Office Compatibility Pack
version = '';
installs = get_kb_list("SMB/Office/WordCnv/*/ProductPath");
if (!isnull(installs))
{
  foreach install (keys(installs))
  {
    version = install - 'SMB/Office/WordCnv/' - '/ProductPath';
    path = installs[install];

    if (!isnull(path))
    {
      share = hotfix_path2share(path:path);
      if (!is_accessible_share(share:share))
        audit(AUDIT_SHARE_FAIL, share);

      path = path - '\\Wordconv.exe';

      old_report = hotfix_get_report();
      check_file = "wordcnv.dll";

      if (hotfix_check_fversion(path:path, file:check_file, version:"12.0.6700.5000", min_version:"12.0.6500.5000") == HCF_OLDER)
      {
        file = ereg_replace(pattern:"^[A-Za-z]:(.*)", string:path, replace:"\1\" + check_file);
        kb_name = "SMB/FileVersions/"+tolower(share-'$')+tolower(str_replace(string:file, find:"\", replace:"/"));
        kb_name = ereg_replace(pattern:"//"+check_file, replace:"/"+check_file, string:kb_name);
        version = get_kb_item(kb_name);

        info =
          '\n  Product           : Microsoft Office Compatibility Pack for Word, Excel, and PowerPoint 2007 File Formats' +
          '\n  File              : ' + path + '\\' + check_file +
          '\n  Installed version : ' + version +
          '\n  Fixed version     : 12.0.6700.5000' + '\n';

        hcf_report = '';
        hotfix_add_report(old_report + info, bulletin:bulletin, kb:"2880513");
        vuln = TRUE;
      }
    }
  }
}
if (!version)
{
  # Additional check if registry key is missing
  path = hotfix_get_officecommonfilesdir(officever:"12.0") + "\Microsoft Office\Office12";

  kb = "2880513";
  if (hotfix_is_vulnerable(file:"wordcnv.dll", version:"12.0.6700.5000", min_version:"12.0.6609.1000", path:path, bulletin:bulletin, kb:kb)) vuln = TRUE;
}

if (vuln)
{
  set_kb_item(name:'SMB/Missing/'+bulletin, value:TRUE);
  hotfix_security_hole();
  hotfix_check_fversion_end();
  exit(0);
}
else
{
  hotfix_check_fversion_end();
  audit(AUDIT_HOST_NOT, 'affected');
}

References