CVE-2018-4309

Apple Safari Subframe Same-Origin Policy Bypass Vulnerability

Severity Score

6.1

*CVSS v3

Exploit Likelihood

*EPSS

Affected Versions

*CPE

Public Exploits

*Multiple Sources

Exploited in Wild

*KEV

Decision

*SSVC

Descriptions

A cross-site scripting issue existed in Safari. This issue was addressed with improved URL validation. This issue affected versions prior to iOS 12, tvOS 12, Safari 12, iTunes 12.9 for Windows, iCloud for Windows 7.7.

Existía un problema de Cross-Site Scripting (XSS) en Safari. Este problema se abordó con una validación de URL mejorada. El problema afectaba a iOS en versiones anteriores a la 12, tvOS en versiones anteriores a la 12, Safari en versiones anteriores a la 12, iTunes para Windows en versiones anteriores a la 12.9 y iCloud para Windows en versiones anteriores a la 7.7.

This vulnerability allows remote attackers to bypass the same-origin policy on vulnerable installations of Apple Safari. User interaction is required to exploit this vulnerability in that the target must visit a malicious page or open a malicious file and execute a user gesture within the rendered HTML.
The specific flaw exists within the handling of subframes. The issue lies in the ability to execute arbitrary JavaScript without preserving the original origin. An attacker can leverage this vulnerability to execute script in the context of a different domain.

*Credits: Anonymous

CVSS Scores

Attack Vector

Network

Attack Complexity

Low

Privileges Required

None

User Interaction

Required

Scope

Changed

Confidentiality

Low

Integrity

Low

Availability

None

Attack Vector

Network

Attack Complexity

Medium

Authentication

None

Confidentiality

None

Integrity

Partial

Availability

None

Attack Vector

Network

Attack Complexity

Low

Authentication

None

Confidentiality

Partial

Integrity

Partial

Availability

None

* Common Vulnerability Scoring System

SSVC

Decision:-

Exploitation

Automatable

Tech. Impact

* Organization's Worst-case Scenario

Timeline

2018-01-02 CVE Reserved
2018-09-24 CVE Published
2024-03-27 EPSS Updated
2024-08-05 CVE Updated
---------- Exploited in Wild
---------- KEV Due Date
---------- First Exploit

CWE

CWE-79: Improper Neutralization of Input During Web Page Generation ('Cross-site Scripting')

CAPEC

References (5)

URL	Tag	Source

URL	Date	SRC

URL	Date	SRC

URL	Date	SRC
https://support.apple.com/kb/HT209106	2019-04-04
https://support.apple.com/kb/HT209107	2019-04-04
https://support.apple.com/kb/HT209109	2019-04-04
https://support.apple.com/kb/HT209140	2019-04-04
https://support.apple.com/kb/HT209141	2019-04-04

Affected Vendors, Products, and Versions

Vendor		Product				Version		Other		Status
Vendor	Product	Version	Other	Status	<-- -->	Vendor	Product	Version	Other	Status
Apple Search vendor "Apple"	Icloud Search vendor "Apple" for product "Icloud"	< 7.7 Search vendor "Apple" for product "Icloud" and version " < 7.7"	-	Affected	in	Microsoft Search vendor "Microsoft"	Windows Search vendor "Microsoft" for product "Windows"	-	-	Safe
Apple Search vendor "Apple"	Itunes Search vendor "Apple" for product "Itunes"	< 12.9 Search vendor "Apple" for product "Itunes" and version " < 12.9"	-	Affected	in	Microsoft Search vendor "Microsoft"	Windows Search vendor "Microsoft" for product "Windows"	-	-	Safe
Apple Search vendor "Apple"		Safari Search vendor "Apple" for product "Safari"				< 12 Search vendor "Apple" for product "Safari" and version " < 12"		-		Affected
Apple Search vendor "Apple"		Iphone Os Search vendor "Apple" for product "Iphone Os"				< 12.0 Search vendor "Apple" for product "Iphone Os" and version " < 12.0"		-		Affected
Apple Search vendor "Apple"		Tvos Search vendor "Apple" for product "Tvos"				< 12 Search vendor "Apple" for product "Tvos" and version " < 12"		-		Affected