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Category:   Application (Web Browser)  >   Microsoft Edge Vendors:   Microsoft
Microsoft Edge Multiple Bugs Let Remote Users Bypass Security Restrictions, Obtain Potentially Sensitive Information, and Gain Elevated Privileges
SecurityTracker Alert ID:  1039101
SecurityTracker URL:  http://securitytracker.com/id/1039101
CVE Reference:   CVE-2017-8503, CVE-2017-8642, CVE-2017-8644, CVE-2017-8650, CVE-2017-8652, CVE-2017-8662   (Links to External Site)
Date:  Aug 8 2017
Impact:   Disclosure of system information, Disclosure of user information, User access via network
Fix Available:  Yes  Vendor Confirmed:  Yes  

Description:   Multiple vulnerabilities were reported in Microsoft Edge. A remote user can gain elevated privileges. A remote user can bypass security controls on the target system. A remote user can obtain potentially sensitive information on the target system.

A remote user can supply specially crafted JavaScript parameters to gain elevated privileges on the target system [CVE-2017-8642].

A remote user can bypass Address Space Layout Randomization (ASLR) security protections on the target system [CVE-2017-8662].

A remote user can trigger an object memory handling error to view potentially sensitive information on the target system [CVE-2017-8644, CVE-2017-8652].

A remote user can escape the the AppContainer sandbox [CVE-2017-8503].

An elevation of privilege vulnerability exists when Microsoft Edge does not properly validate JavaScript under specific conditions, potentially allowing script to run with elevated privileges.

A remote user can bypass same-origin policies to execute code in another domain [CVE-2017-8650].

Liu Long of Qihoo 360Vulcan Team, Thomas Vanhoutte (via Trend Micro's Zero Day Initiative), Jun Kokatsu (@shhnjk), and Ivan Fratric of Google Project Zero reported these vulnerabilities.

Impact:   A remote user can gain elevated privileges on the target system.

A remote user can bypass ASLR and cross-origin security controls on the target system.

A remote user can obtain potentially sensitive information 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-2017-8503
https://portal.msrc.microsoft.com/en-US/security-guidance/advisory/CVE-2017-8642
https://portal.msrc.microsoft.com/en-US/security-guidance/advisory/CVE-2017-8644
https://portal.msrc.microsoft.com/en-US/security-guidance/advisory/CVE-2017-8650
https://portal.msrc.microsoft.com/en-US/security-guidance/advisory/CVE-2017-8652
https://portal.msrc.microsoft.com/en-US/security-guidance/advisory/CVE-2017-8662

Vendor URL:  portal.msrc.microsoft.com/en-US/security-guidance/advisory/CVE-2017-8662 (Links to External Site)
Cause:   Access control error
Underlying OS:  Windows (10)

Message History:   None.


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