CVE-2016-3321

Internet Explorer Iframe Sandbox File Name Disclosure

Severity Score

2.5

*CVSS v3

Exploit Likelihood

*EPSS

Affected Versions

*CPE

Public Exploits

*Multiple Sources

Exploited in Wild

*KEV

Decision

*SSVC

Descriptions

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."

Microsoft Internet Explorer 10 y 11 cargan diferentes archivos para intentos para abrir un archivo :// URL dependiendo de si el archivo existe, lo que permite a usuarios locales enumerar archivos a través de vectores que involucran un archivo :// URL y un sandbox iframe HTML5, también conocida como "Internet Explorer Information 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 and 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.

*Credits: N/A

Attack Vector

Local

Attack Complexity

High

Privileges Required

Low

User Interaction

None

Scope

Unchanged

Confidentiality

Low

Integrity

None

Availability

None

Attack Vector

Local

Attack Complexity

Medium

Authentication

None

Confidentiality

Partial

Integrity

None

Availability

None

* Common Vulnerability Scoring System

SSVC

Decision:-

Exploitation

Automatable

Tech. Impact

* Organization's Worst-case Scenario

Timeline

2016-03-15 CVE Reserved
2016-08-09 CVE Published
2024-01-20 EPSS Updated
2024-08-05 CVE Updated
---------- Exploited in Wild
---------- KEV Due Date
---------- First Exploit

CWE

CWE-200: Exposure of Sensitive Information to an Unauthorized Actor

CAPEC

References (7)

URL	Tag	Source
http://seclists.org/fulldisclosure/2016/Aug/44	Mailing List
http://www.securityfocus.com/archive/1/539174/100/0/threaded	Mailing List
http://www.securityfocus.com/bid/92291	Vdb Entry
http://www.securitytracker.com/id/1036562	Vdb Entry
https://www.securify.nl/advisory/SFY20160301/internet_explorer_iframe_sandbox_local_file_name_disclosure_vulnerability.html	Third Party Advisory
https://securify.nl/advisory/SFY20160301/internet_explorer_iframe_sandbox_local_file_name_disclosure_vulnerability.html

URL	Date	SRC

URL	Date	SRC

URL	Date	SRC
https://docs.microsoft.com/en-us/security-updates/securitybulletins/2016/ms16-095	2018-10-12

Affected Vendors, Products, and Versions

Vendor		Product				Version		Other		Status
Vendor	Product	Version	Other	Status	<-- -->	Vendor	Product	Version	Other	Status
Microsoft Search vendor "Microsoft"		Internet Explorer Search vendor "Microsoft" for product "Internet Explorer"				10 Search vendor "Microsoft" for product "Internet Explorer" and version "10"		-		Affected
Microsoft Search vendor "Microsoft"		Internet Explorer Search vendor "Microsoft" for product "Internet Explorer"				11 Search vendor "Microsoft" for product "Internet Explorer" and version "11"		-		Affected