CVE-2015-6135

Microsoft Windows VBScript CreateObject Function Use-After-Free Information Disclosure Vulnerability

Severity Score

6.5

*CVSS v3

Exploit Likelihood

11.5%

*EPSS

Affected Versions

*CPE

Public Exploits

*Multiple Sources

Exploited in Wild

*KEV

Decision

*SSVC

Descriptions

The Microsoft (1) VBScript 5.7 and 5.8 and (2) JScript 5.7 and 5.8 engines, as used in Internet Explorer 8 through 11 and other products, allow remote attackers to obtain sensitive information from process memory via a crafted web site, aka "Scripting Engine Information Disclosure Vulnerability."

Los motores de Microsoft (1) VBScript 5.7 y 5.8 y (2) JScript 5.7 y 5.8, como se utilizan en Internet Explorer 8 hasta la versión 11 y otros productos, permiten a atacantes remotos obtener información sensible de la memoria de proceso a través de un sitio web manipulado, también conocida como 'Scripting Engine Information Disclosure Vulnerability'.

This vulnerability allows remote attackers to disclose the contents of memory on applications using the VBScript scripting language on vulnerable installations of Microsoft Windows. Microsoft Internet Explorer is an affected application. 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 the implementation of the VBScript CreateObject function. By supplying specially crafted parameters, an attacker can disclose the contents of memory. An attacker can use this information in conjunction with other vulnerabilities to execute arbitrary code in the context of the current process.

*Credits: Simon Zuckerbraun - HP Zero Day Initiative

CVSS Scores

Attack Vector

Network

Attack Complexity

Low

Privileges Required

None

User Interaction

Required

Scope

Unchanged

Confidentiality

High

Integrity

None

Availability

None

Attack Vector

Network

Attack Complexity

Low

Authentication

None

Confidentiality

Partial

Integrity

None

Availability

None

Attack Vector

Network

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

2015-08-14 CVE Reserved
2015-12-08 CVE Published
2024-08-06 CVE Updated
2025-03-30 EPSS Updated
---------- Exploited in Wild
---------- KEV Due Date
---------- First Exploit

CWE

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

CAPEC

References (5)

URL	Tag	Source
http://www.securitytracker.com/id/1034315	Vdb Entry
http://www.securitytracker.com/id/1034317	Vdb Entry
http://www.zerodayinitiative.com/advisor...	X_refsource_misc

1 - 3 of 3

URL	Date	SRC

URL	Date	SRC

URL	Date	SRC
https://docs.microsoft.com/en-us/security-updates/securitybull...	2018-10-12
https://docs.microsoft.com/en-us/security-updates/securitybull...	2018-10-12

1 - 2 of 2

Affected Vendors, Products, and Versions (16)

Vendor		Product				Version		Other		Status
Vendor	Product	Version	Other	Status	<-- -->	Vendor	Product	Version	Other	Status
Microsoft Search vendor "Microsoft"	Jscript Search vendor "Microsoft" for product "Jscript"	5.7 Search vendor "Microsoft" for product "Jscript" and version "5.7"	-	Affected	in	Microsoft Search vendor "Microsoft"	Internet Explorer Search vendor "Microsoft" for product "Internet Explorer"	8 Search vendor "Microsoft" for product "Internet Explorer" and version "8"	-	Safe
Microsoft Search vendor "Microsoft"	Jscript Search vendor "Microsoft" for product "Jscript"	5.7 Search vendor "Microsoft" for product "Jscript" and version "5.7"	-	Affected	in	Microsoft Search vendor "Microsoft"	Internet Explorer Search vendor "Microsoft" for product "Internet Explorer"	9 Search vendor "Microsoft" for product "Internet Explorer" and version "9"	-	Safe
Microsoft Search vendor "Microsoft"	Jscript Search vendor "Microsoft" for product "Jscript"	5.7 Search vendor "Microsoft" for product "Jscript" and version "5.7"	-	Affected	in	Microsoft Search vendor "Microsoft"	Internet Explorer Search vendor "Microsoft" for product "Internet Explorer"	10 Search vendor "Microsoft" for product "Internet Explorer" and version "10"	-	Safe
Microsoft Search vendor "Microsoft"	Jscript Search vendor "Microsoft" for product "Jscript"	5.7 Search vendor "Microsoft" for product "Jscript" and version "5.7"	-	Affected	in	Microsoft Search vendor "Microsoft"	Internet Explorer Search vendor "Microsoft" for product "Internet Explorer"	11 Search vendor "Microsoft" for product "Internet Explorer" and version "11"	-	Safe
Microsoft Search vendor "Microsoft"	Jscript Search vendor "Microsoft" for product "Jscript"	5.8 Search vendor "Microsoft" for product "Jscript" and version "5.8"	-	Affected	in	Microsoft Search vendor "Microsoft"	Internet Explorer Search vendor "Microsoft" for product "Internet Explorer"	8 Search vendor "Microsoft" for product "Internet Explorer" and version "8"	-	Safe
Microsoft Search vendor "Microsoft"	Jscript Search vendor "Microsoft" for product "Jscript"	5.8 Search vendor "Microsoft" for product "Jscript" and version "5.8"	-	Affected	in	Microsoft Search vendor "Microsoft"	Internet Explorer Search vendor "Microsoft" for product "Internet Explorer"	9 Search vendor "Microsoft" for product "Internet Explorer" and version "9"	-	Safe
Microsoft Search vendor "Microsoft"	Jscript Search vendor "Microsoft" for product "Jscript"	5.8 Search vendor "Microsoft" for product "Jscript" and version "5.8"	-	Affected	in	Microsoft Search vendor "Microsoft"	Internet Explorer Search vendor "Microsoft" for product "Internet Explorer"	10 Search vendor "Microsoft" for product "Internet Explorer" and version "10"	-	Safe
Microsoft Search vendor "Microsoft"	Jscript Search vendor "Microsoft" for product "Jscript"	5.8 Search vendor "Microsoft" for product "Jscript" and version "5.8"	-	Affected	in	Microsoft Search vendor "Microsoft"	Internet Explorer Search vendor "Microsoft" for product "Internet Explorer"	11 Search vendor "Microsoft" for product "Internet Explorer" and version "11"	-	Safe
Microsoft Search vendor "Microsoft"	Vbscript Search vendor "Microsoft" for product "Vbscript"	5.7 Search vendor "Microsoft" for product "Vbscript" and version "5.7"	-	Affected	in	Microsoft Search vendor "Microsoft"	Internet Explorer Search vendor "Microsoft" for product "Internet Explorer"	8 Search vendor "Microsoft" for product "Internet Explorer" and version "8"	-	Safe
Microsoft Search vendor "Microsoft"	Vbscript Search vendor "Microsoft" for product "Vbscript"	5.7 Search vendor "Microsoft" for product "Vbscript" and version "5.7"	-	Affected	in	Microsoft Search vendor "Microsoft"	Internet Explorer Search vendor "Microsoft" for product "Internet Explorer"	9 Search vendor "Microsoft" for product "Internet Explorer" and version "9"	-	Safe

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