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Vulnerability Details : CVE-2016-3321

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."
Publish Date : 2016-08-09 Last Update Date : 2018-10-12
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- CVSS Scores & Vulnerability Types

CVSS Score
1.9
Confidentiality Impact Partial (There is considerable informational disclosure.)
Integrity Impact None (There is no impact to the integrity of the system)
Availability Impact None (There is no impact to the availability of the system.)
Access Complexity Medium (The access conditions are somewhat specialized. Some preconditions must be satistified to exploit)
Authentication Not required (Authentication is not required to exploit the vulnerability.)
Gained Access None
Vulnerability Type(s) Obtain Information
CWE ID 200

- Products Affected By CVE-2016-3321

# Product Type Vendor Product Version Update Edition Language
1 Application Microsoft Internet Explorer 10 Version Details Vulnerabilities
2 Application Microsoft Internet Explorer 11 - Version Details Vulnerabilities

- Number Of Affected Versions By Product

Vendor Product Vulnerable Versions
Microsoft Internet Explorer 2

- References For CVE-2016-3321

http://seclists.org/fulldisclosure/2016/Aug/44
FULLDISC 20160809 Internet Explorer iframe sandbox local file name disclosure vulnerability
http://www.securityfocus.com/bid/92291
BID 92291 Microsoft Internet Explorer CVE-2016-3321 Local Information Disclosure Vulnerability Release Date:2016-08-09
http://www.securitytracker.com/id/1036562
SECTRACK 1036562
https://docs.microsoft.com/en-us/security-updates/securitybulletins/2016/ms16-095
MS MS16-095
https://www.securify.nl/advisory/SFY20160301/internet_explorer_iframe_sandbox_local_file_name_disclosure_vulnerability.html
http://www.securityfocus.com/archive/1/539174/100/0/threaded
BUGTRAQ 20160809 Internet Explorer iframe sandbox local file name disclosure vulnerability

- Metasploit Modules Related To CVE-2016-3321

Internet Explorer Iframe Sandbox File Name Disclosure Vulnerability
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.
Module type : auxiliary Rank : normal Platforms : Windows


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