Vulnerabilities > CVE-2015-2375 - Information Exposure vulnerability in Microsoft Excel, Excel Viewer and Sharepoint Server

047910
CVSS 4.3 - MEDIUM
Attack vector
NETWORK
Attack complexity
MEDIUM
Privileges required
NONE
Confidentiality impact
PARTIAL
Integrity impact
NONE
Availability impact
NONE
network
microsoft
CWE-200
nessus

Summary

Microsoft Excel 2010 SP2, Excel 2013 SP1, Excel 2013 RT SP1, Excel Viewer 2007 SP3, Excel Services on SharePoint Server 2010 SP2, and Excel Services on SharePoint Server 2013 SP1 allow remote attackers to bypass the ASLR protection mechanism via a crafted spreadsheet, aka "Microsoft Excel ASLR Bypass Vulnerability."

Common Weakness Enumeration (CWE)

Common Attack Pattern Enumeration and Classification (CAPEC)

  • Subverting Environment Variable Values
    The attacker directly or indirectly modifies environment variables used by or controlling the target software. The attacker's goal is to cause the target software to deviate from its expected operation in a manner that benefits the attacker.
  • Footprinting
    An attacker engages in probing and exploration activity to identify constituents and properties of the target. Footprinting is a general term to describe a variety of information gathering techniques, often used by attackers in preparation for some attack. It consists of using tools to learn as much as possible about the composition, configuration, and security mechanisms of the targeted application, system or network. Information that might be collected during a footprinting effort could include open ports, applications and their versions, network topology, and similar information. While footprinting is not intended to be damaging (although certain activities, such as network scans, can sometimes cause disruptions to vulnerable applications inadvertently) it may often pave the way for more damaging attacks.
  • Exploiting Trust in Client (aka Make the Client Invisible)
    An attack of this type exploits a programs' vulnerabilities in client/server communication channel authentication and data integrity. It leverages the implicit trust a server places in the client, or more importantly, that which the server believes is the client. An attacker executes this type of attack by placing themselves in the communication channel between client and server such that communication directly to the server is possible where the server believes it is communicating only with a valid client. There are numerous variations of this type of attack.
  • Browser Fingerprinting
    An attacker carefully crafts small snippets of Java Script to efficiently detect the type of browser the potential victim is using. Many web-based attacks need prior knowledge of the web browser including the version of browser to ensure successful exploitation of a vulnerability. Having this knowledge allows an attacker to target the victim with attacks that specifically exploit known or zero day weaknesses in the type and version of the browser used by the victim. Automating this process via Java Script as a part of the same delivery system used to exploit the browser is considered more efficient as the attacker can supply a browser fingerprinting method and integrate it with exploit code, all contained in Java Script and in response to the same web page request by the browser.
  • Session Credential Falsification through Prediction
    This attack targets predictable session ID in order to gain privileges. The attacker can predict the session ID used during a transaction to perform spoofing and session hijacking.

Msbulletin

bulletin_idMS15-070
bulletin_url
date2015-07-14T00:00:00
impactRemote Code Execution
knowledgebase_id3072620
knowledgebase_url
severityImportant
titleVulnerabilities in Microsoft Office Could Allow Remote Code Execution

Nessus

NASL familyWindows : Microsoft Bulletins
NASL idSMB_NT_MS15-070.NASL
descriptionThe remote Windows host has a version of Microsoft Office, Microsoft Word, Microsoft Excel, Microsoft PowerPoint, SharePoint Server, or Microsoft Office Compatibility Pack installed that is affected by multiple vulnerabilities : - An ASLR bypass vulnerability exists in Microsoft Excel due to memory being released in an unintended manner. A remote attacker can exploit this by convincing a user to open a specially crafted Excel (.xls) file, allowing the attacker to more reliably predict the memory offsets of specific instructions in a given call stack. The attacker can then utilize this information to more easily exploit additional vulnerabilities. (CVE-2015-2375) - Multiple remote code execution vulnerabilities exist due to improper handling of objects in memory. A remote attacker can exploit these vulnerabilities by convincing a user to open a specially crafted file, resulting in the execution of arbitrary code in the context of the current user. (CVE-2015-2376, CVE-2015-2377, CVE-2015-2379, CVE-2015-2380, CVE-2015-2415, CVE-2015-2424) - A remote code execution vulnerability exists in Microsoft excel due to improper handling of the loading of dynamic link library (DLL) files. A remote attacker can exploit this vulnerability by placing a specially crafted DLL file in the user
last seen2020-06-01
modified2020-06-02
plugin id84739
published2015-07-14
reporterThis script is Copyright (C) 2015-2018 Tenable Network Security, Inc.
sourcehttps://www.tenable.com/plugins/nessus/84739
titleMS15-070: Vulnerabilities in Microsoft Office Could Allow Remote Code Execution (3072620)
code
#
# (C) Tenable Network Security, Inc.
#

include("compat.inc");

if (description)
{
  script_id(84739);
  script_version("1.8");
  script_cvs_date("Date: 2018/07/30 15:31:33");

  script_cve_id(
    "CVE-2015-2375",
    "CVE-2015-2376",
    "CVE-2015-2377",
    "CVE-2015-2378",
    "CVE-2015-2379",
    "CVE-2015-2380",
    "CVE-2015-2415",
    "CVE-2015-2424"
  );
  #script_bugtraq_id();
  script_xref(name:"MSFT", value:"MS15-070");
  script_xref(name:"MSKB", value:"2837612");
  script_xref(name:"MSKB", value:"2965208");
  script_xref(name:"MSKB", value:"2965209");
  script_xref(name:"MSKB", value:"2965281");
  script_xref(name:"MSKB", value:"2965283");
  script_xref(name:"MSKB", value:"3054861");
  script_xref(name:"MSKB", value:"3054949");
  script_xref(name:"MSKB", value:"3054958");
  script_xref(name:"MSKB", value:"3054963");
  script_xref(name:"MSKB", value:"3054968");
  script_xref(name:"MSKB", value:"3054971");
  script_xref(name:"MSKB", value:"3054973");
  script_xref(name:"MSKB", value:"3054981");
  script_xref(name:"MSKB", value:"3054990");
  script_xref(name:"MSKB", value:"3054996");
  script_xref(name:"MSKB", value:"3054999");
  script_xref(name:"IAVA", value:"2015-A-0163");

  script_name(english:"MS15-070: Vulnerabilities in Microsoft Office Could Allow Remote Code Execution (3072620)");
  script_summary(english:"Checks the Office and SharePoint versions.");

  script_set_attribute(attribute:"synopsis", value:
"The remote Windows host is affected by multiple vulnerabilities.");
  script_set_attribute(attribute:"description", value:
"The remote Windows host has a version of Microsoft Office, Microsoft
Word, Microsoft Excel, Microsoft PowerPoint, SharePoint Server, or
Microsoft Office Compatibility Pack installed that is affected by
multiple vulnerabilities :

  - An ASLR bypass vulnerability exists in Microsoft Excel
    due to memory being released in an unintended manner. A
    remote attacker can exploit this by convincing a user to
    open a specially crafted Excel (.xls) file, allowing the
    attacker to more reliably predict the memory offsets of
    specific instructions in a given call stack. The
    attacker can then utilize this information to more
    easily exploit additional vulnerabilities.
    (CVE-2015-2375)

  - Multiple remote code execution vulnerabilities exist
    due to improper handling of objects in memory. A remote
    attacker can exploit these vulnerabilities by convincing
    a user to open a specially crafted file, resulting in
    the execution of arbitrary code in the context of the
    current user. (CVE-2015-2376, CVE-2015-2377,
    CVE-2015-2379, CVE-2015-2380, CVE-2015-2415,
    CVE-2015-2424)

  - A remote code execution vulnerability exists in
    Microsoft excel due to improper handling of the loading
    of dynamic link library (DLL) files. A remote attacker
    can exploit this vulnerability by placing a specially
    crafted DLL file in the user's current working directory
    and then convincing the user to launch a program
    designed to load the DLL, resulting in the execution of
    arbitrary code in the context of the current user.
    (CVE-2015-2378)");
  script_set_attribute(attribute:"see_also", value:"https://technet.microsoft.com/library/security/ms15-070");
  script_set_attribute(attribute:"solution", value:
"Microsoft has released a set of patches for Office 2007. Office 2010,
Office 2013, Word 2007, Word 2010, Word 2013, Excel 2007, Excel 2010,
Excel 2013, PowerPoint 2007, PowerPoint 2010, PowerPoint 2013, Excel
Viewer, Word Viewer, Office Compatibility Pack, SharePoint Server
2007, SharePoint Server 2010, and SharePoint Server 2013.");
  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:H/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:"exploited_by_malware", value:"true");

  script_set_attribute(attribute:"vuln_publication_date", value:"2015/07/14");
  script_set_attribute(attribute:"patch_publication_date", value:"2015/07/14");
  script_set_attribute(attribute:"plugin_publication_date", value:"2015/07/14");

  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:excel");
  script_set_attribute(attribute:"cpe", value:"cpe:/a:microsoft:powerpoint");
  script_set_attribute(attribute:"cpe", value:"cpe:/a:microsoft:excel_viewer");
  script_set_attribute(attribute:"cpe", value:"cpe:/a:microsoft:word_viewer");
  script_set_attribute(attribute:"cpe", value:"cpe:/a:microsoft:office_compatibility_pack");
  script_set_attribute(attribute:"cpe", value:"cpe:/a:microsoft:sharepoint_server");
  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) 2015-2018 Tenable Network Security, Inc.");

  script_dependencies("office_installed.nasl", "microsoft_sharepoint_installed.nbin", "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");
include("install_func.inc");

global_var bulletin, vuln;

get_kb_item_or_exit("SMB/MS_Bulletin_Checks/Possible");

bulletin = 'MS15-070';
kbs = make_list(
  2837612, # SharePoint Server 2007 SP3
  2965208, # Office Compat Pack SP3
  2965209, # Excel Viewer 2007 SP3
  2965281, # Excel 2007 SP3
  2965283, # PowerPoint 2007 SP3
  3054861, # SharePoint Server 2013 SP1
  3054949, # Excel 2013 SP1
  3054958, # Word Viewer
  3054963, # PowerPoint 2010 SP2
  3054968, # SharePoint Server 2010 SP2
  3054971, # Office 2010 SP2
  3054973, # Word 2010 SP2
  3054981, # Excel 2010 SP2
  3054990, # Word 2013 SP1
  3054996, # Word 2007 SP3
  3054999  # PowerPoint 2013 SP1
);

######################################################################
# Main
if (get_kb_item("Host/patch_management_checks")) hotfix_check_3rd_party(bulletin:bulletin, kbs:kbs, severity:SECURITY_HOLE);

get_kb_item_or_exit("SMB/Registry/Enumerated", exit_code:1);

# Get path information for Windows.
windir = hotfix_get_systemroot();
if (isnull(windir)) exit(1, "Failed to determine the location of %windir%.");
registry_init();

# Generic Office Checks
function perform_office_checks()
{
  local_var office_vers, office_sp, path;
  office_vers = hotfix_check_office_version();
  if (office_vers["12.0"])
  {
    office_sp = get_kb_item("SMB/Office/2007/SP");
    if (!isnull(office_sp) && office_sp == 3)
    {
      path = hotfix_append_path(path:hotfix_get_officeprogramfilesdir(officever:"12.0"), value:"Microsoft Office\Office12");
      if (hotfix_check_fversion(file:"ppcore.dll", version:"12.0.6726.5000", path:path, bulletin:bulletin, kb:"2965283", product:"PowerPoint 2007 SP3") == HCF_OLDER)
        vuln = TRUE;
    }
  }
  if (office_vers["14.0"])
  {
    office_sp = get_kb_item("SMB/Office/2010/SP");
    if (!isnull(office_sp) && office_sp == 2)
    {
      path = hotfix_append_path(path:hotfix_get_officeprogramfilesdir(officever:"14.0"), value:"Microsoft Office\Office14");
      if (hotfix_check_fversion(file:"Wwlib.dll", version:"14.0.7153.5002", path:path, bulletin:bulletin, kb:"3054971", product:"Microsoft Office 2010") == HCF_OLDER)
        vuln = TRUE;
    }
  }
}

function perform_office_product_checks()
{
  local_var excel_checks, ppt_checks, word_checks, excel_vwr_checks, compat_checks, word_vwr_checks;

  ######################################################################
  # Excel
  ######################################################################
  excel_checks = make_array(
    "12.0", make_array("sp", 3, "version", "12.0.6723.5000", "kb", "2965281"),
    "14.0", make_array("sp", 2, "version", "14.0.7153.5000", "kb", "3054981"),
    "15.0", make_array("sp", 1, "version", "15.0.4737.1000", "kb", "3054949")
  );
  if (hotfix_check_office_product(product:"Excel", checks:excel_checks, bulletin:bulletin))
    vuln = TRUE;

  ######################################################################
  # PowerPoint
  ######################################################################
  ppt_checks = make_array(
    "14.0", make_array("sp", 2, "version", "14.0.7138.5000", "kb", "3054963"),
    "15.0", make_array("sp", 1, "version", "15.0.4737.1003", "kb", "3054999")
  );
  if (hotfix_check_office_product(product:"PowerPoint", checks:ppt_checks, bulletin:bulletin))
    vuln = TRUE;

  ######################################################################
  # Word
  ######################################################################
  word_checks = make_array(
    "12.0", make_array("sp", 3, "version", "12.0.6726.5000", "kb", "3054996"),
    "14.0", make_array("sp", 2, "version", "14.0.7153.5002", "kb", "3054973"),
    "15.0", make_array("sp", 1, "version", "15.0.4737.1003", "kb", "3054990")
  );
  if (hotfix_check_office_product(product:"Word", checks:word_checks, bulletin:bulletin))
    vuln = TRUE;

  ######################################################################
  # PowerPoint Viewer 2010
  # KB: 2956195 Fix Ver: 14.0.7149.5000
  ######################################################################
  excel_vwr_checks = make_array(
    "12.0", make_array("sp", 3, "version", "12.0.6723.5000", "kb", "2965209")
  );
  if (hotfix_check_office_product(product:"ExcelViewer", display_name:"Excel Viewer", checks:excel_vwr_checks, bulletin:bulletin))
    vuln = TRUE;
  compat_checks = make_array(
    "12.0", make_array("sp", 3, "version", "12.0.6723.5000", "kb", "2965208")
  );
  if (hotfix_check_office_product(product:"ExcelCnv", display_name:"Office Compatibility Pack SP3", checks:compat_checks, bulletin:bulletin))
    vuln = TRUE;
  word_vwr_checks = make_array(
    "11.0", make_array("version", "11.0.8419.0", "kb", "3054958")
  );
  if (hotfix_check_office_product(product:"WordViewer", display_name:"Word Viewer", checks:word_vwr_checks, bulletin:bulletin))
    vuln = TRUE;
}

######################################################################
# SharePoint
######################################################################
function perform_sharepoint_checks()
{
  local_var sps_2007_path, sps_2007_sp, sps_2007_edition;
  local_var sps_2010_path, sps_2013_path, sps_2010_sp, sps_2013_sp, sps_2010_edition, sps_2013_edition;
  local_var installs, install, sp, path;
  local_var share, name, port, login, pass, domain, rc;
  local_var js, file, timestamp, kb, info;

  # Get installs of SharePoint
  sps_2007_path = NULL;
  sps_2010_path = NULL;
  sps_2013_path = NULL;
  sp = NULL;

  installs = get_installs(app_name:"Microsoft SharePoint Server");
  foreach install (installs[1])
  {
    if (install["Product"] == "2007")
    {
      sps_2007_path = install["path"];
      sps_2007_sp = install["SP"];
      sps_2007_edition = install["Edition"];
    }
    if (install['Product'] == "2010")
    {
      sps_2010_path = install['path'];
      sps_2010_sp = install['SP'];
      sps_2010_edition = install['Edition'];
    }
    else if (install['Product'] == "2013")
    {
      sps_2013_path = install['path'];
      sps_2013_sp = install['SP'];
      sps_2013_edition = install['Edition'];
    }
  }

  ######################################################################
  # SharePoint Server 2007 SP3 - Excel Services
  # KB: 2837612 File: xlsrv.dll Fix Ver: 12.0.6723.5000
  ######################################################################
  if (sps_2007_path && sps_2007_sp == "3" && sps_2007_edition == "Server")
  {
    path = hotfix_append_path(path:sps_2007_path, value:"Bin");
    if (hotfix_check_fversion(file:"xlsrv.dll", version:"12.0.6723.5000", path:path, bulletin:bulletin, kb:"2837612", product:"Office SharePoint Server 2007 Excel Services") == HCF_OLDER)
      vuln = TRUE;
  }

  ######################################################################
  # SharePoint Server 2010 SP2 - Excel Services
  # KB: 3054968 File: xlsrv.dll Fix Ver: 14.0.7153.5000
  ######################################################################
  if (sps_2010_path && sps_2010_sp == "2" && sps_2010_edition == "Server")
  {
    path = hotfix_append_path(path:sps_2010_path, value:"Bin");
    if (hotfix_check_fversion(file:"xlsrv.dll", version:"14.0.7153.5000", path:path, bulletin:bulletin, kb:"3054968", product:"Office SharePoint Server 2010 Excel Services") == HCF_OLDER)
      vuln = TRUE;
  }

  ######################################################################
  # SharePoint Server 2013 SP1 - Excel Services
  # KB: 3054861 File: xlsrv.dll Fix Ver: 15.0.4737.1000
  ######################################################################
  if (sps_2013_path && sps_2013_sp == "1" && sps_2013_edition == "Server")
  {
    path = hotfix_append_path(path:sps_2013_path, value:"Bin");
    if (hotfix_check_fversion(file:"xlsrv.dll", version:"15.0.4737.1000", path:path, bulletin:bulletin, kb:"3054861", product:"Office SharePoint Server 2013 Excel Services") == HCF_OLDER)
      vuln = TRUE;
  }
}

perform_office_checks();
perform_office_product_checks();
perform_sharepoint_checks();

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');
}