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Category:   Application (Web Browser)  >   Apple Safari Vendors:   Apple
Apple Safari Bugs Let Remote Users Spoof the Address Bar and Conduct Cross-Site Scripting Attacks
SecurityTracker Alert ID:  1040606
SecurityTracker URL:  http://securitytracker.com/id/1040606
CVE Reference:   CVE-2018-4102, CVE-2018-4116, CVE-2018-4133   (Links to External Site)
Date:  Mar 30 2018
Impact:   Disclosure of authentication information, Disclosure of user information, Execution of arbitrary code via network, Modification of system information, Modification of user information
Fix Available:  Yes  Vendor Confirmed:  Yes  

Description:   Multiple vulnerabilities were reported in Apple Safari. A remote user can spoof address bar URLs. A remote user can conduct cross-site scripting attacks.

A remote user can trigger a user interface inconsistency to spoof the address bar [CVE-2018-4102, CVE-2018-4116].

A remote user can trigger an input validation flaw in the WebKit component to cause arbitrary scripting code to be executed by the target user's browser [CVE-2018-4133]. The code will originate from an arbitrary site and will run in the security context of that site. As a result, the code will be able to access the target user's cookies (including authentication cookies), if any, associated with the site, access data recently submitted by the target user via web form to the site, or take actions on the site acting as the target user.

Kai Zhao of 3H security team, @littlelailo, xisigr of Tencent's Xuanwu Lab (tencent.com), Anton Lopanitsyn of Wallarm, Linus Sarud of Detectify (detectify.com), and Yuji Tounai of NTT Communications Corporation reported these vulnerabilities.

Impact:   A remote user can spoof a URL.

A remote user can access the target user's cookies (including authentication cookies), if any, associated with the site running the Apple Safari software, access data recently submitted by the target user via web form to the site, or take actions on the site acting as the target user.

Solution:   The vendor has issued a fix (11.1).

The vendor advisory is available at:

https://support.apple.com/en-us/HT208695

Vendor URL:  support.apple.com/en-us/HT208695 (Links to External Site)
Cause:   Input validation error
Underlying OS:  UNIX (macOS/OS X)

Message History:   None.


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