CVE-2017-11856

Microsoft Windows JavaScript Array Use-After-Free Remote Code Execution Vulnerability

Severity Score

7.5

*CVSS v3

Exploit Likelihood

*EPSS

Affected Versions

*CPE

Public Exploits

*Multiple Sources

Exploited in Wild

*KEV

Decision

*SSVC

Descriptions

Internet Explorer in Microsoft Windows 7 SP1, Windows Server 2008 SP2 and R2 SP1, Windows 8.1 and Windows RT 8.1, Windows Server 2012 R2, Windows 10 Gold, 1511, 1607, 1703, 1709, Windows Server 2016 and Windows Server, version 1709 allows an attacker to gain the same user rights as the current user, due to how Internet Explorer handles objects in memory, aka "Internet Explorer Memory Corruption Vulnerability". This CVE ID is unique from CVE-2017-11855.

Internet Explorer en Microsoft Windows 7 SP1, Windows Server 2008 SP2 y R2 SP1, Windows 8.1 y Windows RT 8.1, Windows Server 2012 R2, Windows 10 Gold, 1511, 1607, 1703, 1709 y Windows Server 1709 permite que un atacante obtenga los mismos derechos de usuario que el usuario actual, debido a la forma en la que Internet Explorer gestiona los objetos en la memoria. Esto también se conoce como "Internet Explorer Memory Corruption Vulnerability". El ID de este CVE es diferente de CVE-2017-11855.

This vulnerability allows remote attackers to execute arbitrary code on vulnerable installations of Microsoft Windows. User interaction is required to exploit this vulnerability in that the target must visit a malicious page or open a malicious file.
The specific flaw exists within jscript9. By performing actions in JavaScript an attacker can cause a pointer to be reused after it has been freed. An attacker can leverage this vulnerability to execute code under the context of the current process.

*Credits: Anonymous

CVSS Scores

Attack Vector

Network

Attack Complexity

High

Privileges Required

None

User Interaction

Required

Scope

Unchanged

Confidentiality

High

Integrity

High

Availability

High

Attack Vector

Network

Attack Complexity

High

Authentication

None

Confidentiality

Complete

Integrity

Complete

Availability

Complete

Attack Vector

Network

Attack Complexity

Low

Authentication

None

Confidentiality

Partial

Integrity

Partial

Availability

Partial

* Common Vulnerability Scoring System

SSVC

Decision:-

Exploitation

Automatable

Tech. Impact

* Organization's Worst-case Scenario

Timeline

2017-07-31 CVE Reserved
2017-11-15 CVE Published
2023-08-30 EPSS Updated
2024-09-16 CVE Updated
---------- Exploited in Wild
---------- KEV Due Date
---------- First Exploit

CWE

CWE-119: Improper Restriction of Operations within the Bounds of a Memory Buffer

CAPEC

References (2)

URL	Tag	Source
http://www.securityfocus.com/bid/101753	Third Party Advisory

URL	Date	SRC

URL	Date	SRC
https://portal.msrc.microsoft.com/en-US/security-guidance/advisory/CVE-2017-11856	2022-05-23

URL	Date	SRC

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"	11 Search vendor "Microsoft" for product "Internet Explorer" and version "11"	-	Affected	in	Microsoft Search vendor "Microsoft"	Windows 10 Search vendor "Microsoft" for product "Windows 10"	-	-	Safe
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	in	Microsoft Search vendor "Microsoft"	Windows 10 Search vendor "Microsoft" for product "Windows 10"	1511 Search vendor "Microsoft" for product "Windows 10" and version "1511"	-	Safe
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	in	Microsoft Search vendor "Microsoft"	Windows 10 Search vendor "Microsoft" for product "Windows 10"	1607 Search vendor "Microsoft" for product "Windows 10" and version "1607"	-	Safe
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	in	Microsoft Search vendor "Microsoft"	Windows 10 Search vendor "Microsoft" for product "Windows 10"	1703 Search vendor "Microsoft" for product "Windows 10" and version "1703"	-	Safe
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	in	Microsoft Search vendor "Microsoft"	Windows 10 Search vendor "Microsoft" for product "Windows 10"	1709 Search vendor "Microsoft" for product "Windows 10" and version "1709"	-	Safe
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	in	Microsoft Search vendor "Microsoft"	Windows 7 Search vendor "Microsoft" for product "Windows 7"	-	sp1	Safe
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	in	Microsoft Search vendor "Microsoft"	Windows 8.1 Search vendor "Microsoft" for product "Windows 8.1"	-	-	Safe
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	in	Microsoft Search vendor "Microsoft"	Windows Rt 8.1 Search vendor "Microsoft" for product "Windows Rt 8.1"	-	-	Safe
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	in	Microsoft Search vendor "Microsoft"	Windows Server Search vendor "Microsoft" for product "Windows Server"	1709 Search vendor "Microsoft" for product "Windows Server" and version "1709"	-	Safe
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	in	Microsoft Search vendor "Microsoft"	Windows Server 2008 Search vendor "Microsoft" for product "Windows Server 2008"	-	-	Safe
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	in	Microsoft Search vendor "Microsoft"	Windows Server 2008 Search vendor "Microsoft" for product "Windows Server 2008"	r2 Search vendor "Microsoft" for product "Windows Server 2008" and version "r2"	sp1	Safe
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	in	Microsoft Search vendor "Microsoft"	Windows Server 2012 Search vendor "Microsoft" for product "Windows Server 2012"	*	-	Safe
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	in	Microsoft Search vendor "Microsoft"	Windows Server 2012 Search vendor "Microsoft" for product "Windows Server 2012"	r2 Search vendor "Microsoft" for product "Windows Server 2012" and version "r2"	-	Safe
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	in	Microsoft Search vendor "Microsoft"	Windows Server 2016 Search vendor "Microsoft" for product "Windows Server 2016"	-	-	Safe