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Category:   OS (Microsoft)  >   Windows Script Engine Vendors:   Microsoft
Windows JScript/VBScript Engine Bugs Let Remote Users Obtain Sensitive Information and Execute Arbitrary Code
SecurityTracker Alert ID:  1034317
SecurityTracker URL:  http://securitytracker.com/id/1034317
CVE Reference:   CVE-2015-6135, CVE-2015-6136   (Links to External Site)
Date:  Dec 8 2015
Impact:   Disclosure of system information, Disclosure of user information, Execution of arbitrary code via network, User access via network
Fix Available:  Yes  Vendor Confirmed:  Yes  
Version(s): Vista SP2, 2008 SP2; and prior service packs
Description:   Two vulnerabilities were reported in Windows JScript/VBScript Engine. A remote user can cause arbitrary code to be executed on the target user's system. A remote user can obtain potentially sensitive information on the target system.

A remote user can create specially crafted content that, when loaded by the target user, will trigger a memory corruption error in the VBScript engine and execute arbitrary code on the target user's system [CVE-2015-6136]. This can also be exploited via an ActiveX control marked as "safe for initialization" and contained in an application or Microsoft Office document that hosts the rendering engine.

A remote user can create specially crafted content that, when loaded by the target user, will trigger a flaw in the VBScript engine and access potentially sensitive information from memory on the target user's system [CVE-2015-6135].

An anonymous researcher (via HP's Zero Day Initiative), Simon Zuckerbraun (via HP's Zero Day Initiative), Yuki Chen of Qihoo 360Vulcan Team, and chenxuebin@360.cn 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 obtain potentially sensitive information on the target system.

Solution:   The vendor has issued a fix.

A patch matrix is available in the vendor advisory.

A restart may be required.

The Microsoft advisory is available at:

https://technet.microsoft.com/library/security/ms15-126

Vendor URL:  technet.microsoft.com/library/security/ms15-126 (Links to External Site)
Cause:   Access control error

Message History:   None.


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