Vulnerabilities > CVE-2018-8580 - Information Exposure vulnerability in Microsoft Sharepoint Designer and Sharepoint Enterprise 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
NVD
Published: 2018-12-12
Updated: 2019-01-08

Summary

An information disclosure vulnerability exists where certain modes of the search function in Microsoft SharePoint Server are vulnerable to cross-site search attacks (a variant of cross-site request forgery, CSRF), aka "Microsoft SharePoint Information Disclosure Vulnerability." This affects Microsoft SharePoint.

Vulnerable Configurations

Part Description Count
Application
Microsoft
3

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.

Nessus

NASL familyWindows : Microsoft Bulletins
NASL idSMB_NT_MS18_DEC_OFFICE_SHAREPOINT.NASL
descriptionThe Microsoft Sharepoint Server installation on the remote host is missing security updates. It is, therefore, affected by multiple vulnerabilities : - An information disclosure vulnerability exists when Microsoft Excel software reads out of bound memory due to an uninitialized variable, which could disclose the contents of memory. An attacker who successfully exploited the vulnerability could view out of bound memory. Exploitation of the vulnerability requires that a user open a specially crafted file with an affected version of Microsoft Excel software. The security update addresses the vulnerability by properly initializing the affected variable. (CVE-2018-8627) - An elevation of privilege vulnerability exists when Microsoft SharePoint Server does not properly sanitize a specially crafted authentication request to an affected SharePoint server. An attacker who successfully exploited this vulnerability could execute malicious code on a vulnerable server in the context of the SharePoint application pool account. (CVE-2018-8635) - An information disclosure vulnerability exists where certain modes of the search function in Microsoft SharePoint Server are vulnerable to cross-site search attacks (a variant of cross-site request forgery, CSRF). When users are simultaneously logged in to Microsoft SharePoint Server and visit a malicious web page, the attacker can, through standard browser functionality, induce the browser to invoke search queries as the logged in user. While the attacker cant access the search results or documents as such, the attacker can determine whether the query did return results or not, and thus by issuing targeted queries discover facts about documents that are searchable for the logged-in user. The security update addresses the vulnerability by running the search queries in a way that doesnt expose them to this browser vulnerability. (CVE-2018-8580) - A remote code execution vulnerability exists in Microsoft PowerPoint software when the software fails to properly handle objects in memory. An attacker who successfully exploited the vulnerability could run arbitrary code in the context of the current user. If the current user is logged on with administrative user rights, an attacker could take control of the affected system. An attacker could then install programs; view, change, or delete data; or create new accounts with full user rights. (CVE-2018-8628)
last seen2020-06-01
modified2020-06-02
plugin id119686
published2018-12-14
reporterThis script is Copyright (C) 2018-2019 and is owned by Tenable, Inc. or an Affiliate thereof.
sourcehttps://www.tenable.com/plugins/nessus/119686
titleSecurity Updates for Microsoft Sharepoint Server (December 2018)
code
#
# (C) Tenable Network Security, Inc.
#
# The descriptive text and package checks in this plugin were  
# extracted from the Microsoft Security Updates API. The text
# itself is copyright (C) Microsoft Corporation.
#
include("compat.inc");

if (description)
{
  script_id(119686);
  script_version("1.4");
  script_cvs_date("Date: 2019/11/01");

  script_cve_id(
    "CVE-2018-8580",
    "CVE-2018-8627",
    "CVE-2018-8628",
    "CVE-2018-8635",
    "CVE-2018-8650"
  );
  script_xref(name:"MSKB", value:"2965309");
  script_xref(name:"MSKB", value:"4092468");
  script_xref(name:"MSKB", value:"4092472");
  script_xref(name:"MSKB", value:"4461558");
  script_xref(name:"MSKB", value:"4461569");
  script_xref(name:"MSKB", value:"4461541");
  script_xref(name:"MSKB", value:"4461548");
  script_xref(name:"MSKB", value:"4461549");
  script_xref(name:"MSKB", value:"4461465");
  script_xref(name:"MSKB", value:"4461580");
  script_xref(name:"MSFT", value:"MS18-2965309");
  script_xref(name:"MSFT", value:"MS18-4092468");
  script_xref(name:"MSFT", value:"MS18-4092472");
  script_xref(name:"MSFT", value:"MS18-4461558");
  script_xref(name:"MSFT", value:"MS18-4461569");
  script_xref(name:"MSFT", value:"MS18-4461541");
  script_xref(name:"MSFT", value:"MS18-4461548");
  script_xref(name:"MSFT", value:"MS18-4461549");
  script_xref(name:"MSFT", value:"MS18-4461465");
  script_xref(name:"MSFT", value:"MS18-4461580");

  script_name(english:"Security Updates for Microsoft Sharepoint Server (December 2018)");
  script_summary(english:"Checks for Microsoft security updates.");

  script_set_attribute(attribute:"synopsis", value:
"The Microsoft Sharepoint Server installation on the remote host is affected by multiple vulnerabilities.");
  script_set_attribute(attribute:"description", value:
"The Microsoft Sharepoint Server installation on the remote
host is missing security updates. It is, therefore, affected
by multiple vulnerabilities :

  - An information disclosure vulnerability exists when
    Microsoft Excel software reads out of bound memory due
    to an uninitialized variable, which could disclose the
    contents of memory. An attacker who successfully
    exploited the vulnerability could view out of bound
    memory. Exploitation of the vulnerability requires that
    a user open a specially crafted file with an affected
    version of Microsoft Excel software. The security update
    addresses the vulnerability by properly initializing the
    affected variable. (CVE-2018-8627)

  - An elevation of privilege vulnerability exists when
    Microsoft SharePoint Server does not properly sanitize a
    specially crafted authentication request to an affected
    SharePoint server. An attacker who successfully
    exploited this vulnerability could execute malicious
    code on a vulnerable server in the context of the
    SharePoint application pool account.  (CVE-2018-8635)

  - An information disclosure vulnerability exists where
    certain modes of the search function in Microsoft
    SharePoint Server are vulnerable to cross-site search
    attacks (a variant of cross-site request forgery, CSRF).
    When users are simultaneously logged in to Microsoft
    SharePoint Server and visit a malicious web page, the
    attacker can, through standard browser functionality,
    induce the browser to invoke search queries as the
    logged in user. While the attacker cant access the
    search results or documents as such, the attacker can
    determine whether the query did return results or not,
    and thus by issuing targeted queries discover facts
    about documents that are searchable for the logged-in
    user. The security update addresses the vulnerability by
    running the search queries in a way that doesnt expose
    them to this browser vulnerability. (CVE-2018-8580)

  - A remote code execution vulnerability exists in
    Microsoft PowerPoint software when the software fails to
    properly handle objects in memory. An attacker who
    successfully exploited the vulnerability could run
    arbitrary code in the context of the current user. If
    the current user is logged on with administrative user
    rights, an attacker could take control of the affected
    system. An attacker could then install programs; view,
    change, or delete data; or create new accounts with full
    user rights.  (CVE-2018-8628)");
  # https://support.microsoft.com/en-us/help/4092472/descriptionofthesecurityupdateforsharepointenterpriseserver2013decembe
  script_set_attribute(attribute:"see_also", value:"http://www.nessus.org/u?70c99df5");
  # https://support.microsoft.com/en-us/help/4461569/descriptionofthesecurityupdateforsharepointserver2010december112018
  script_set_attribute(attribute:"see_also", value:"http://www.nessus.org/u?00f6be56");
  # https://support.microsoft.com/en-us/help/4461558/descriptionofthesecurityupdateforsharepointfoundation2013december11201
  script_set_attribute(attribute:"see_also", value:"http://www.nessus.org/u?4997c825");
  # https://support.microsoft.com/en-us/help/4461549/descriptionofthesecurityupdateforsharepointenterpriseserver2013decembe
  script_set_attribute(attribute:"see_also", value:"http://www.nessus.org/u?6fab3001");
  # https://support.microsoft.com/en-us/help/4461465/descriptionofthesecurityupdateforsharepointserver2010december112018
  script_set_attribute(attribute:"see_also", value:"http://www.nessus.org/u?de9bd607");
  # https://support.microsoft.com/en-us/help/4461541/descriptionofthesecurityupdateforsharepointenterpriseserver2016decembe
  script_set_attribute(attribute:"see_also", value:"http://www.nessus.org/u?e996ac3b");
  script_set_attribute(attribute:"solution", value:
"Microsoft has released the following security updates to address this issue:  
  -KB2965309
  -KB4092468
  -KB4092472
  -KB4461558
  -KB4461569
  -KB4461548
  -KB4461549
  -KB4461465
  -KB4461580
  -KB4461541");
  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_cvss3_base_vector("CVSS:3.0/AV:L/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H");
  script_set_cvss3_temporal_vector("CVSS:3.0/E:U/RL:O/RC:C");
  script_set_attribute(attribute:"cvss_score_source", value:"CVE-2018-8628");

  script_set_attribute(attribute:"exploitability_ease", value:"No known exploits are available");

  script_set_attribute(attribute:"vuln_publication_date", value:"2018/12/11");
  script_set_attribute(attribute:"patch_publication_date", value:"2018/12/11");
  script_set_attribute(attribute:"plugin_publication_date", value:"2018/12/14");

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

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

  script_copyright(english:"This script is Copyright (C) 2018-2019 and is owned by Tenable, Inc. or an Affiliate thereof.");

  script_dependencies("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");

get_kb_item_or_exit("SMB/MS_Bulletin_Checks/Possible");

bulletin = "MS18-12";
kbs = make_list(
  '2965309', # Microsoft SharePoint Server 2010
  '4092468', # SharePoint Enterprise Server 2013
  '4092472', # SharePoint Enterprise Server 2013
  '4461558', # SharePoint Foundation 2013
  '4461569', # Microsoft SharePoint Server 2010
  '4461580', #  Microsoft SharePoint Foundation 2010 
  '4461541', # SharePoint Server 2016
  '4461548', # Sharepoint 2019
  '4461549', # SharePoint Enterprise Server 2013
  '4461465'  # 2010 Microsoft Business Productivity Servers 
);

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();

var sps_2010_path, sps_2010_sp, sps_2010_edition;
var sps_2013_path, sps_2013_sp, sps_2013_edition;
var sps_2016_path, sps_2016_sp, sps_2016_edition;
var sps_2019_path, sps_2019_sp, sps_2019_edition;

vuln = FALSE;
port = kb_smb_transport();

installs = get_installs(app_name:"Microsoft SharePoint Server", exit_if_not_found:TRUE);

foreach install (installs[1])
{
  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'];
  }
  else if (install["Product"] == "2016")
  {
    sps_2016_path = install['path'];
    sps_2016_sp = install['SP'];
    sps_2016_edition = install['Edition'];
  }
  else if (install["Product"] == "2019")
  {
    sps_2019_path = install['path'];
    sps_2019_sp = install['SP'];
    sps_2019_edition = install['Edition'];
  } 
}

######################################################################
# SharePoint Server Foundation 2010
######################################################################
if (sps_2010_path && sps_2010_sp == "2" && sps_2010_edition == "Foundation")
{
  commonfiles = hotfix_get_commonfilesdir();
  path = hotfix_append_path(path:commonfiles, value:"microsoft shared\Web Server Extensions\14\BIN");
  if (hotfix_check_fversion(file:"onetutil.dll", version:"14.0.7225.5000", min_version:"14.0.0.0", path:path, kb:"4461580", product:"Microsoft SharePoint Server 2010 SP2") == HCF_OLDER)
    vuln = TRUE;

}

######################################################################
# SharePoint Server 2010 SP2
######################################################################

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:"14.0.7225.5000", min_version:"14.0.0.0", path:path, kb:"4461569", product:"Microsoft SharePoint Server 2010 SP2 (Excel Service)") == HCF_OLDER)
    vuln = TRUE;

  commonfiles = hotfix_get_commonfilesdir();
  path = hotfix_append_path(path:commonfiles, value:"microsoft shared\Web Server Extensions\14\ISAPI");
  if (hotfix_check_fversion(file:"microsoft.sharepoint.portal.dll", version:"14.0.7225.5000", min_version:"14.0.0.0", path:path, kb:"4461465", product:"Microsoft SharePoint Server 2010 SP2") == HCF_OLDER)
    vuln = TRUE;
}

######################################################################
# SharePoint Enterprise Server 2013 SP1
######################################################################
if (sps_2013_path && sps_2013_sp == "1")
{
  if (sps_2013_edition == "Server")
  {
    path = hotfix_append_path(path:sps_2013_path, value:"WebServices\ConversionServices");
    if (hotfix_check_fversion(file:"msoserver.dll", version:"15.0.5093.1000", min_version:"15.0.0.0", path:path, kb:"4461549", product:"Microsoft SharePoint Enterprise Server 2013 SP 1") == HCF_OLDER)
      vuln = TRUE;
    
    path = hotfix_append_path(path:sps_2013_path, value:"WebServices\ConversionServices");
    if (hotfix_check_fversion(file:"ppserver.dll", version:"15.0.5093.1000", min_version:"15.0.0.0", path:path, kb:"4092472", product:"Microsoft SharePoint Enterprise Server 2013 SP 1") == HCF_OLDER)
      vuln = TRUE;
  }
  else if (sps_2013_edition == "Foundation")
  {
    commonfiles = hotfix_get_commonfilesdir();
    path = hotfix_append_path(path:commonfiles, value:"microsoft shared\Web Server Extensions\15\bin");
    if (hotfix_check_fversion(file:"csisrv.dll", version:"15.0.5093.1000", min_version:"15.0.0.0", path:path, kb:"4461558", product:"Microsoft SharePoint Enterprise Server 2013 SP 1") == HCF_OLDER)
      vuln = TRUE;
    
  }
}

######################################################################
# SharePoint Server 2016
######################################################################
if (sps_2016_path && sps_2016_sp == "0" && sps_2016_edition == "Server")
{
  path = hotfix_append_path(path:sps_2016_path, value:"WebServices\ConversionServices");
  if (hotfix_check_fversion(file:"msoserver.dll", version:"16.0.4783.1000", min_version:"16.0.0.0", path:path, kb:"4461541", product:"Microsoft SharePoint Server 2016") == HCF_OLDER)
    vuln = TRUE;
}

######################################################################
# SharePoint Server 2019
######################################################################
if (sps_2019_path && sps_2019_sp == "0" && sps_2019_edition == "Server")
{
  commonfiles = hotfix_get_commonfilesdir();
  path = hotfix_append_path(path:commonfiles, value:"microsoft shared\Web Server Extensions\16\BIN");
  if (hotfix_check_fversion(file:"onetutil.dll", version:"16.0.10338.12107", min_version:"16.0.0.0", path:path, kb:"4461548", product:"Microsoft SharePoint Server 2019") == HCF_OLDER)
    vuln = TRUE;
}


# check for vuln and report... 
if (vuln)
{
  replace_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