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Category:   Application (Web Browser)  >   Microsoft Edge Vendors:   Microsoft
Microsoft Edge Lets Remote Users Bypass Security Restrictions on the Target System
SecurityTracker Alert ID:  1039801
SecurityTracker URL:  http://securitytracker.com/id/1039801
CVE Reference:   CVE-2017-11863, CVE-2017-11872, CVE-2017-11874   (Links to External Site)
Date:  Nov 14 2017
Impact:   Disclosure of system information, Disclosure of user information
Fix Available:  Yes  Vendor Confirmed:  Yes  

Description:   Several vulnerabilities were reported in Microsoft Edge. A remote user can bypass security controls on the target system.

A remote user can create specially crafted content that, when loaded by the target user, will bypass Content Security Policy (CSP) controls on the target system [CVE-2017-11863].

A remote user can create specially crafted content that, when loaded by the target user, will bypass Cross-Origin Resource Sharing (CORS) redirect restrictions and redirect the target user's browser to an arbitrary site [CVE-2017-11872].

A remote user can create specially crafted content that, when loaded by the target user, will exploit a memory access error in code compiled by the Edge Just-In-Time (JIT) compiler to bypass Control Flow Guard (CFG) on the target user's system [CVE-2017-11874].

Stefano Calzavara and Alvise Rabitti of Universita Ca'Foscari, Venezia, Prakash Sharma (@1lastBr3ath), and Ivan Fratric of Google Project Zero reported these vulnerabilities.

Impact:   A remote user can bypass security controls on the target system.
Solution:   The vendor has issued a fix.

The Microsoft advisories are available at:

https://portal.msrc.microsoft.com/en-US/security-guidance/advisory/CVE-2017-11863
https://portal.msrc.microsoft.com/en-US/security-guidance/advisory/CVE-2017-11872
https://portal.msrc.microsoft.com/en-US/security-guidance/advisory/CVE-2017-11874

Vendor URL:  portal.msrc.microsoft.com/en-US/security-guidance/advisory/CVE-2017-11863 (Links to External Site)
Cause:   Access control error
Underlying OS:  Windows (10)

Message History:   None.


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