Vulnerabilities > CVE-2016-3321 - Information Exposure vulnerability in Microsoft Internet Explorer 10/11
Attack vector
LOCAL Attack complexity
HIGH Privileges required
LOW Confidentiality impact
LOW Integrity impact
NONE Availability impact
NONE Summary
Microsoft Internet Explorer 10 and 11 load different files for attempts to open a file:// URL depending on whether the file exists, which allows local users to enumerate files via vectors involving a file:// URL and an HTML5 sandbox iframe, aka "Internet Explorer Information Disclosure Vulnerability."
Vulnerable Configurations
| Part | Description | Count |
|---|---|---|
| Application | 2 |
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.
Metasploit
| description | It was found that Internet Explorer allows the disclosure of local file names. This issue exists due to the fact that Internet Explorer behaves different for file:// URLs pointing to existing and non-existent files. When used in combination with HTML5 sandbox iframes it is possible to use this behavior to find out if a local file exists. This technique only works on Internet Explorer 10 & 11 since these support the HTML5 sandbox. Also it is not possible to do this from a regular website as file:// URLs are blocked all together. The attack must be performed locally (works with Internet zone Mark of the Web) or from a share. |
| id | MSF:AUXILIARY/GATHER/IE_SANDBOX_FINDFILES |
| last seen | 2020-05-27 |
| modified | 2019-09-23 |
| published | 2016-08-09 |
| references | |
| reporter | Rapid7 |
| source | https://github.com/rapid7/metasploit-framework/blob/master//modules/auxiliary/gather/ie_sandbox_findfiles.rb |
| title | Internet Explorer Iframe Sandbox File Name Disclosure Vulnerability |
Msbulletin
| bulletin_id | MS16-095 |
| bulletin_url | |
| date | 2016-08-09T00:00:00 |
| impact | Remote Code Execution |
| knowledgebase_id | 3177356 |
| knowledgebase_url | |
| severity | Critical |
| title | Cumulative Security Update for Internet Explorer |
Nessus
| NASL family | Windows : Microsoft Bulletins |
| NASL id | SMB_NT_MS16-095.NASL |
| description | The version of Internet Explorer installed on the remote Windows host is missing Cumulative Security Update 3177356. It is, therefore, affected by multiple vulnerabilities, the majority of which are remote code execution vulnerabilities. An unauthenticated, remote attacker can exploit these vulnerabilities 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 seen | 2020-06-01 |
| modified | 2020-06-02 |
| plugin id | 92819 |
| published | 2016-08-09 |
| reporter | This script is Copyright (C) 2016-2019 and is owned by Tenable, Inc. or an Affiliate thereof. |
| source | https://www.tenable.com/plugins/nessus/92819 |
| title | MS16-095: Cumulative Security Update for Internet Explorer (3177356) |
| code | |
References
- http://seclists.org/fulldisclosure/2016/Aug/44
- http://seclists.org/fulldisclosure/2016/Aug/44
- http://www.securityfocus.com/archive/1/539174/100/0/threaded
- http://www.securityfocus.com/archive/1/539174/100/0/threaded
- http://www.securityfocus.com/bid/92291
- http://www.securityfocus.com/bid/92291
- http://www.securitytracker.com/id/1036562
- http://www.securitytracker.com/id/1036562
- https://docs.microsoft.com/en-us/security-updates/securitybulletins/2016/ms16-095
- https://docs.microsoft.com/en-us/security-updates/securitybulletins/2016/ms16-095
- https://www.securify.nl/advisory/SFY20160301/internet_explorer_iframe_sandbox_local_file_name_disclosure_vulnerability.html
- https://www.securify.nl/advisory/SFY20160301/internet_explorer_iframe_sandbox_local_file_name_disclosure_vulnerability.html