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Category:   Application (Web Browser)  >   Microsoft Internet Explorer Vendors:   Microsoft
Microsoft Internet Explorer Multiple Flaws Let Remote Users Execute Arbitrary Code and Bypass Security Controls
SecurityTracker Alert ID:  1041258
SecurityTracker URL:  http://securitytracker.com/id/1041258
CVE Reference:   CVE-2018-0949, CVE-2018-8242, CVE-2018-8287, CVE-2018-8288, CVE-2018-8291, CVE-2018-8296   (Links to External Site)
Date:  Jul 10 2018
Impact:   Execution of arbitrary code via network, User access via network
Fix Available:  Yes  Vendor Confirmed:  Yes  
Version(s): 9, 10, 11
Description:   Multiple vulnerabilities were reported in Microsoft Internet Explorer. A remote user can cause arbitrary code to be executed on the target user's system. A remote user can bypass security controls on the target system.

A remote user can bypass UNC resource security controls on the target system and cause the target user's browser to load ostensibly restricted data [CVE-2018-0949].

A remote user can create a specially crafted ActiveX control marked "safe for initialization" in an application or Microsoft Office document that hosts the related rendering engine that, when loaded by the target user, will trigger a memory corruption error in the JavaScript engine and execute arbitrary code on the target user's system [CVE-2018-8242, CVE-2018-8287, CVE-2018-8288, CVE-2018-8291, CVE-2018-8296].

Masato Kinugawa of Cure53, an anonymous researcher (via Trend Micro's Zero Day Initiative), an anonymous researcher (via iDefense Labs), Yuki Chen of Qihoo 360 Vulcan Team, and Lokihardt of Google Project Zero reported these vulnerabilities.

Impact:   A remote user can create content that, when loaded by the target user, will execute arbitrary code on the target user's system.

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-2018-0949
https://portal.msrc.microsoft.com/en-US/security-guidance/advisory/CVE-2018-8242
https://portal.msrc.microsoft.com/en-US/security-guidance/advisory/CVE-2018-8287
https://portal.msrc.microsoft.com/en-US/security-guidance/advisory/CVE-2018-8288
https://portal.msrc.microsoft.com/en-US/security-guidance/advisory/CVE-2018-8291
https://portal.msrc.microsoft.com/en-US/security-guidance/advisory/CVE-2018-8296

Vendor URL:  portal.msrc.microsoft.com/en-US/security-guidance/advisory/CVE-2018-0949 (Links to External Site)
Cause:   Access control error
Underlying OS:  Windows (Any)

Message History:   None.


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