CVE-2017-0018

Microsoft Internet Explorer CHtmTag 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

Microsoft Internet Explorer 10 and 11 allow remote attackers to execute arbitrary code or cause a denial of service (memory corruption) via a crafted web site, aka "Internet Explorer Memory Corruption Vulnerability." This vulnerability is different from those described in CVE-2017-0037 and CVE-2017-0149.

Microsoft Internet Explorer 10 y 11 permiten a atacantes remotos ejecutar código arbitrario o provocar una denegación de servicio (corrupción de memoria) a través de un sitio web manipulado, también conocido como "Internet Explorer Memory Corruption Vulnerability". Esta vulnerabilidad es distinta de aquellas descritas en CVE-2017-0037 y CVE-2017-0149.

This vulnerability allows remote attackers to disclose sensitive information on vulnerable installations of Microsoft Internet Explorer. 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 processing of HTML tags. By manipulating a document's elements an attacker can cause a pointer to be reused after it has been freed. An attacker can leverage this vulnerability to disclose sensitive information under the context of the current process.

*Credits: Kai Song(exp-sky) of Tencent's Xuanwu Lab

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

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

2016-09-09 CVE Reserved
2017-03-17 CVE Published
2024-08-05 CVE Updated
2024-11-02 EPSS 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 (3)

URL	Tag	Source
http://www.securityfocus.com/bid/96086	Third Party Advisory
http://www.securitytracker.com/id/1038008	Vdb Entry

URL	Date	SRC

URL	Date	SRC
https://portal.msrc.microsoft.com/en-US/security-guidance/advisory/CVE-2017-0018	2017-07-12

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"				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