Vulnerabilities > CVE-2016-3206 - Improper Input Validation vulnerability in Microsoft Jscript and Vbscript

047910
CVSS 7.5 - HIGH
Attack vector
NETWORK
Attack complexity
HIGH
Privileges required
NONE
Confidentiality impact
HIGH
Integrity impact
HIGH
Availability impact
HIGH
network
high complexity
microsoft
CWE-20
nessus
NVD
Published: 2016-06-16
Updated: 2018-10-12

Summary

The Microsoft (1) JScript 5.8 and (2) VBScript 5.7 and 5.8 engines, as used in Internet Explorer 9 through 11 and other products, allow remote attackers to execute arbitrary code or cause a denial of service (memory corruption) via a crafted web site, aka "Scripting Engine Memory Corruption Vulnerability," a different vulnerability than CVE-2016-3205 and CVE-2016-3207.

Vulnerable Configurations

Part Description Count
Application
Microsoft
6

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.
  • Server Side Include (SSI) Injection
    An attacker can use Server Side Include (SSI) Injection to send code to a web application that then gets executed by the web server. Doing so enables the attacker to achieve similar results to Cross Site Scripting, viz., arbitrary code execution and information disclosure, albeit on a more limited scale, since the SSI directives are nowhere near as powerful as a full-fledged scripting language. Nonetheless, the attacker can conveniently gain access to sensitive files, such as password files, and execute shell commands.
  • Cross Zone Scripting
    An attacker is able to cause a victim to load content into their web-browser that bypasses security zone controls and gain access to increased privileges to execute scripting code or other web objects such as unsigned ActiveX controls or applets. This is a privilege elevation attack targeted at zone-based web-browser security. In a zone-based model, pages belong to one of a set of zones corresponding to the level of privilege assigned to that page. Pages in an untrusted zone would have a lesser level of access to the system and/or be restricted in the types of executable content it was allowed to invoke. In a cross-zone scripting attack, a page that should be assigned to a less privileged zone is granted the privileges of a more trusted zone. This can be accomplished by exploiting bugs in the browser, exploiting incorrect configuration in the zone controls, through a cross-site scripting attack that causes the attackers' content to be treated as coming from a more trusted page, or by leveraging some piece of system functionality that is accessible from both the trusted and less trusted zone. This attack differs from "Restful Privilege Escalation" in that the latter correlates to the inadequate securing of RESTful access methods (such as HTTP DELETE) on the server, while cross-zone scripting attacks the concept of security zones as implemented by a browser.
  • Cross Site Scripting through Log Files
    An attacker may leverage a system weakness where logs are susceptible to log injection to insert scripts into the system's logs. If these logs are later viewed by an administrator through a thin administrative interface and the log data is not properly HTML encoded before being written to the page, the attackers' scripts stored in the log will be executed in the administrative interface with potentially serious consequences. This attack pattern is really a combination of two other attack patterns: log injection and stored cross site scripting.
  • Command Line Execution through SQL Injection
    An attacker uses standard SQL injection methods to inject data into the command line for execution. This could be done directly through misuse of directives such as MSSQL_xp_cmdshell or indirectly through injection of data into the database that would be interpreted as shell commands. Sometime later, an unscrupulous backend application (or could be part of the functionality of the same application) fetches the injected data stored in the database and uses this data as command line arguments without performing proper validation. The malicious data escapes that data plane by spawning new commands to be executed on the host.

Msbulletin

  • bulletin_idMS16-063
    bulletin_url
    date2016-06-14T00:00:00
    impactRemote Code Execution
    knowledgebase_id3163649
    knowledgebase_url
    severityCritical
    titleCumulative Security Update for Internet Explorer
  • bulletin_idMS16-069
    bulletin_url
    date2016-06-14T00:00:00
    impactRemote Code Execution
    knowledgebase_id3163640
    knowledgebase_url
    severityCritical
    titleCumulative Security Update for JScript and VBScript

Nessus

  • NASL familyWindows : Microsoft Bulletins
    NASL idSMB_NT_MS16-063.NASL
    descriptionThe version of Internet Explorer installed on the remote host is missing Cumulative Security Update 3163649. It is, therefore, affected by multiple vulnerabilities, the majority of which are remote code execution vulnerabilities. An unauthenticated, remote attacker can exploit these issues by convincing a user to visit a specially crafted website, resulting in the execution of arbitrary code in the context of the current user.
    last seen2020-06-01
    modified2020-06-02
    plugin id91596
    published2016-06-14
    reporterThis script is Copyright (C) 2016-2019 and is owned by Tenable, Inc. or an Affiliate thereof.
    sourcehttps://www.tenable.com/plugins/nessus/91596
    titleMS16-063: Cumulative Security Update for Internet Explorer (3163649)
    code
    #
# (C) Tenable Network Security, Inc.
#

include("compat.inc");

if (description)
{
  script_id(91596);
  script_version("1.12");
  script_cvs_date("Date: 2019/11/19");

  script_cve_id(
    "CVE-2016-0199",
    "CVE-2016-0200",
    "CVE-2016-3202",
    "CVE-2016-3205",
    "CVE-2016-3206",
    "CVE-2016-3207",
    "CVE-2016-3210",
    "CVE-2016-3211",
    "CVE-2016-3212",
    "CVE-2016-3213"
  );
  script_bugtraq_id(
    91101,
    91102,
    91103,
    91108,
    91109,
    91110,
    91111,
    91112
  );
  script_xref(name:"MSFT", value:"MS16-063");
  script_xref(name:"MSKB", value:"3160005");
  script_xref(name:"MSKB", value:"3163017");
  script_xref(name:"MSKB", value:"3163018");

  script_name(english:"MS16-063: Cumulative Security Update for Internet Explorer (3163649)");
  script_summary(english:"Checks the version of mshtml.dll.");

  script_set_attribute(attribute:"synopsis", value:
"The remote host has a web browser installed that is affected by
multiple vulnerabilities.");
  script_set_attribute(attribute:"description", value:
"The version of Internet Explorer installed on the remote host is
missing Cumulative Security Update 3163649. It is, therefore, affected
by multiple vulnerabilities, the majority of which are remote code
execution vulnerabilities. An unauthenticated, remote attacker can
exploit these issues by convincing a user to visit a specially crafted
website, resulting in the execution of arbitrary code in the context
of the current user.");
  script_set_attribute(attribute:"see_also", value:"https://docs.microsoft.com/en-us/security-updates/SecurityBulletins/2016/ms16-063");
  script_set_attribute(attribute:"solution", value:
"Microsoft has released a set of patches for Internet Explorer 9, 10,
and 11.

Note that the security update in MS16-077 must also be installed in
order to fully resolve CVE-2016-3213.");
  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_cvss3_base_vector("CVSS:3.0/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H");
  script_set_cvss3_temporal_vector("CVSS:3.0/E:H/RL:O/RC:C");
  script_set_attribute(attribute:"cvss_score_source", value:"CVE-2016-3213");

  script_set_attribute(attribute:"exploitability_ease", value:"Exploits are available");
  script_set_attribute(attribute:"exploit_available", value:"true");
  script_set_attribute(attribute:"exploit_framework_core", value:"true");
  script_set_attribute(attribute:"exploited_by_malware", value:"true");

  script_set_attribute(attribute:"vuln_publication_date", value:"2016/06/14");
  script_set_attribute(attribute:"patch_publication_date", value:"2016/06/14");
  script_set_attribute(attribute:"plugin_publication_date", value:"2016/06/14");

  script_set_attribute(attribute:"plugin_type", value:"local");
  script_set_attribute(attribute:"cpe", value:"cpe:/o:microsoft:windows");
  script_set_attribute(attribute:"cpe", value:"cpe:/a:microsoft:ie");
  script_end_attributes();

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

  script_copyright(english:"This script is Copyright (C) 2016-2019 and is owned by Tenable, Inc. or an Affiliate thereof.");

  script_dependencies("smb_hotfixes.nasl", "ms_bulletin_checks_possible.nasl", "smb_nt_ms16-077.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_hotfixes_fcheck.inc");
include("smb_hotfixes.inc");
include("smb_func.inc");
include("smb_reg_query.inc");
include("misc_func.inc");

get_kb_item_or_exit("SMB/MS_Bulletin_Checks/Possible");

bulletin = 'MS16-063';
kbs = make_list('3160005', '3163017', '3163018');

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");
get_kb_item_or_exit("SMB/WindowsVersion", exit_code:1);

if (hotfix_check_sp_range(vista:'2', win7:'1', win8:'0',  win81:'0', win10:'0') <= 0) audit(AUDIT_OS_SP_NOT_VULN);

productname = get_kb_item_or_exit("SMB/ProductName", exit_code:1);
if ("Windows 8" >< productname && "8.1" >!< productname)
 audit(AUDIT_OS_SP_NOT_VULN);

if (hotfix_check_server_core() == 1) audit(AUDIT_WIN_SERVER_CORE);

share = hotfix_get_systemdrive(as_share:TRUE, exit_on_fail:TRUE);
if (!is_accessible_share(share:share)) audit(AUDIT_SHARE_FAIL, share);

vuln = 0;

if (
  # Windows 10
  hotfix_is_vulnerable(os:"10", sp:0, file:"mshtml.dll", version:"11.0.10586.420", min_version:"11.0.10586.0", dir:"\system32", bulletin:bulletin, kb:"3163018") ||
  hotfix_is_vulnerable(os:"10", sp:0, file:"mshtml.dll", version:"11.0.10240.16942", min_version:"11.0.10240.16000", dir:"\system32", bulletin:bulletin, kb:"3163017") ||

  # Windows 8.1 / Windows Server 2012 R2
  # Internet Explorer 11
   hotfix_is_vulnerable(os:"6.3", sp:0, file:"mshtml.dll", version:"11.0.9600.18349", min_version:"11.0.9600.17000", dir:"\system32", bulletin:bulletin, kb:"3160005") ||

  # Windows Server 2012
  # Internet Explorer 10
  hotfix_is_vulnerable(os:"6.2", sp:0, file:"mshtml.dll", version:"10.0.9200.21860", min_version:"10.0.9200.16000", dir:"\system32", bulletin:bulletin, kb:"3160005") ||

  # Windows 7 / Server 2008 R2
  # Internet Explorer 11
  hotfix_is_vulnerable(os:"6.1", sp:1, file:"mshtml.dll", version:"11.0.9600.18349", min_version:"11.0.9600.17000", dir:"\system32", bulletin:bulletin, kb:"3160005") ||

  # Vista / Windows Server 2008
  # Internet Explorer 9
  hotfix_is_vulnerable(os:"6.0", sp:2, file:"mshtml.dll", version:"9.0.8112.20904", min_version:"9.0.8112.20000", dir:"\system32", bulletin:bulletin, kb:"3160005") ||
  hotfix_is_vulnerable(os:"6.0", sp:2, file:"mshtml.dll", version:"9.0.8112.16789", min_version:"9.0.8112.16000", dir:"\system32", bulletin:bulletin, kb:"3160005")
)
  vuln++;

# To be fully protected against CVE-2016-3213 , the
# update for MS16-077 must be installed.
if (get_kb_item("SMB/Missing/MS16-077"))
{
  hotfix_add_report('\nThe remote host is missing MS16-077.');
  vuln++;
}

if (vuln)
{
  set_kb_item(name:'SMB/Missing/'+bulletin, value:TRUE);
  hotfix_security_hole();
  hotfix_check_fversion_end();
}
else
{
  hotfix_check_fversion_end();
  audit(AUDIT_HOST_NOT, 'affected');
}
  • NASL familyWindows : Microsoft Bulletins
    NASL idSMB_NT_MS16-069.NASL
    descriptionThe remote Windows host is missing a security update. It is, therefore, affected by multiple remote code execution vulnerabilities in the JScript and VBScript engines due to improper handling of objects in memory. An unauthenticated, remote attacker can exploit these vulnerabilities by convincing a user to visit a specially crafted website or open a Microsoft Office document containing an embedded ActiveX control, resulting in the execution of arbitrary code in the context of the current user.
    last seen2020-06-01
    modified2020-06-02
    plugin id91598
    published2016-06-14
    reporterThis script is Copyright (C) 2016-2019 and is owned by Tenable, Inc. or an Affiliate thereof.
    sourcehttps://www.tenable.com/plugins/nessus/91598
    titleMS16-069: Cumulative Security Update for JScript and VBScript (3163640)
    code
    #
# (C) Tenable Network Security, Inc.
#

include("compat.inc");

if (description)
{
  script_id(91598);
  script_version("1.13");
  script_cvs_date("Date: 2019/11/19");

  script_cve_id("CVE-2016-3205", "CVE-2016-3206", "CVE-2016-3207");
  script_bugtraq_id(91108, 91109, 91110);
  script_xref(name:"MSFT", value:"MS16-069");
  script_xref(name:"MSKB", value:"3158363");
  script_xref(name:"MSKB", value:"3158364");

  script_name(english:"MS16-069: Cumulative Security Update for JScript and VBScript (3163640)");
  script_summary(english:"Checks the version of Vbscript.dll.");

  script_set_attribute(attribute:"synopsis", value:
"The remote Windows host is affected by multiple remote code execution
vulnerabilities.");
  script_set_attribute(attribute:"description", value:
"The remote Windows host is missing a security update. It is,
therefore, affected by multiple remote code execution vulnerabilities
in the JScript and VBScript engines due to improper handling of
objects in memory. An unauthenticated, remote attacker can exploit
these vulnerabilities by convincing a user to visit a specially
crafted website or open a Microsoft Office document containing an
embedded ActiveX control, resulting in the execution of arbitrary code
in the context of the current user.");
  script_set_attribute(attribute:"see_also", value:"https://docs.microsoft.com/en-us/security-updates/SecurityBulletins/2016/ms16-069");
  script_set_attribute(attribute:"solution", value:
"Microsoft has released a set of patches for Windows Vista, 2008, and
Server Core 2008 R2. Alternatively, apply the workaround referenced in
the vendor advisory.");
  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:H/RL:OF/RC:C");
  script_set_cvss3_base_vector("CVSS:3.0/AV:N/AC:H/PR:N/UI:R/S:U/C:H/I:H/A:H");
  script_set_cvss3_temporal_vector("CVSS:3.0/E:H/RL:O/RC:C");
  script_set_attribute(attribute:"cvss_score_source", value:"CVE-2016-3207");

  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:"2016/06/14");
  script_set_attribute(attribute:"patch_publication_date", value:"2016/06/14");
  script_set_attribute(attribute:"plugin_publication_date", value:"2016/06/14");

  script_set_attribute(attribute:"plugin_type", value:"local");
  script_set_attribute(attribute:"cpe", value:"cpe:/o:microsoft:windows");
  script_end_attributes();

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

  script_copyright(english:"This script is Copyright (C) 2016-2019 and is owned by Tenable, Inc. or an Affiliate thereof.");

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

get_kb_item_or_exit("SMB/MS_Bulletin_Checks/Possible");

bulletin = "MS16-069";
kbs = make_list("3158363", "3158364");

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");
get_kb_item_or_exit("SMB/WindowsVersion", exit_code:1);

if (hotfix_check_sp_range(vista:"2", win7:"1") <= 0) audit(AUDIT_OS_SP_NOT_VULN);

# Windows 7 & Server 2008 R2 (6.1 !Core) Exclusion
productname = get_kb_item_or_exit("SMB/ProductName", exit_code:1);
if ("Windows 7" >< productname) audit(AUDIT_OS_SP_NOT_VULN);
else if ("2008 R2" >< productname && hotfix_check_server_core() == 0) audit(AUDIT_OS_SP_NOT_VULN);

vuln = 0;

# VBScript 5.8
# only on Server Core 2008 R2
kb = "3158363";
if (
  hotfix_check_server_core() == 1 &&
  (
    # Windows Server 2008 R2
    hotfix_is_vulnerable(os:"6.1", sp:1, file:"Vbscript.dll", version:"5.8.7601.23452", min_version:"5.8.7601.0", dir:"\system32", bulletin:bulletin, kb:kb)
  )
) vuln++;

# VBScript 5.7
kb = "3158364";
if (
  hotfix_check_server_core() == 1 &&
  (
    # Windows 2008 SC only. The advisory also lists full OS installs
    # and Vista, however, these files are included with IE 7, which
    # is unsupported as of Jan 12, 2016. Not constraining this check
    # to SC only will inflate vulnerability counts unnecessarily.
    # https://www.microsoft.com/en-ca/WindowsForBusiness/End-of-IE-support
    hotfix_is_vulnerable(os:"6.0", sp:2, file:"Vbscript.dll", version:"5.7.6002.23967", min_version:"5.7.6002.20000", dir:"\System32", bulletin:bulletin, kb:kb) ||
    hotfix_is_vulnerable(os:"6.0", sp:2, file:"Vbscript.dll", version:"5.7.6002.19652", min_version:"5.7.0.0", dir:"\System32", bulletin:bulletin, kb:kb)
  )
) vuln++;


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