CVE-2017-8503

Microsoft Edge XAML File Improper Access Control Privilege Escalation Vulnerability

Severity Score

8.8

*CVSS v3

Exploit Likelihood

*EPSS

Affected Versions

*CPE

Public Exploits

*Multiple Sources

Exploited in Wild

*KEV

Decision

*SSVC

Descriptions

Microsoft Edge in Microsoft Windows 10 1511, 1607, 1703, and Windows Server 2016 allows an attacker to escape from the AppContainer sandbox, aka "Microsoft Edge Elevation of Privilege Vulnerability". This CVE ID is unique from CVE-2017-8642.

Microsoft Edge en Microsoft Windows 10 1511, 1607, 1703, y Windows Server 2016 permite que un atacante escape de la sandbox AppContainer. Esta vulnerabilidad también es denominada "Vulnerabilidad de elevación de privilegios de Microsoft Edge". Este ID CVE es exclusivo de CVE-2017-8642.

This vulnerability allows remote attackers to escalate privileges on vulnerable installations of Microsoft Edge. An attacker must first obtain the ability to execute low-privileged code on the target system in order to exploit this vulnerability.
The specific flaw exists within the handling of XAML files. When an XAML file is downloaded, Microsoft Edge does not set appropriate file permissions. An attacker can leverage this in conjunction with other vulnerabilities to execute arbitrary code in the context of the current user at medium integrity.

*Credits: Thomas Vanhoutte

CVSS Scores

Attack Vector

Local

Attack Complexity

Low

Privileges Required

Low

User Interaction

None

Scope

Changed

Confidentiality

High

Integrity

High

Availability

High

Attack Vector

Local

Attack Complexity

Low

Authentication

None

Confidentiality

Partial

Integrity

Partial

Availability

Partial

Attack Vector

Local

Attack Complexity

High

Authentication

None

Confidentiality

Partial

Integrity

Partial

Availability

Partial

* Common Vulnerability Scoring System

SSVC

Decision:-

Exploitation

Automatable

Tech. Impact

* Organization's Worst-case Scenario

Timeline

2017-05-03 CVE Reserved
2017-08-08 CVE Published
2024-08-20 EPSS Updated
2024-09-16 CVE Updated
---------- Exploited in Wild
---------- KEV Due Date
---------- First Exploit

CWE

CAPEC

References (3)

URL	Tag	Source
http://www.securityfocus.com/bid/99395	Third Party Advisory
http://www.securitytracker.com/id/1039101	Third Party Advisory

URL	Date	SRC

URL	Date	SRC
https://portal.msrc.microsoft.com/en-US/security-guidance/advisory/CVE-2017-8503	2019-10-03

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"	Edge Search vendor "Microsoft" for product "Edge"	*	-	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"	Edge Search vendor "Microsoft" for product "Edge"	*	-	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"	Edge Search vendor "Microsoft" for product "Edge"	*	-	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"	Edge Search vendor "Microsoft" for product "Edge"	*	-	Affected	in	Microsoft Search vendor "Microsoft"	Windows Server 2016 Search vendor "Microsoft" for product "Windows Server 2016"	*	-	Safe