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Category:   OS (Microsoft)  >   Microsoft XML Core Services (MSXML) Vendors:   Microsoft
Microsoft XML Core Services (MSXML) Bugs Let Remote Users Obtain Potentially Sensitive Information Bypass Security Features
SecurityTracker Alert ID:  1033241
SecurityTracker URL:  http://securitytracker.com/id/1033241
CVE Reference:   CVE-2015-2434, CVE-2015-2440, CVE-2015-2471   (Links to External Site)
Updated:  Aug 11 2015
Original Entry Date:  Aug 11 2015
Impact:   Disclosure of system information, Disclosure of user information
Fix Available:  Yes  Vendor Confirmed:  Yes  
Version(s): 3.0, 5.0, 6.0
Description:   Several vulnerabilities were reported in Microsoft XML Core Services (MSXML). A remote user can bypass security controls on the target system. A remote user can obtain potentially sensitive information on the target system.

The system permits the use of Secure Sockets Layer (SSL) 2.0. A remote user that can conduct a man-in-the-middle attack can force a downgrade to SSL 2.0 and then decrypt portions of network traffic [CVE-2015-2434, CVE-2015-2471].

A remote user can create specially crafted content that, when loaded by the target user, will trigger a flaw in MSXML to obtain potentially sensitive information that can be used to bypass Address Space Layout Randomization (ASLR) security features [CVE-2015-2440].

Ucha Gobejishvili (via HP's Zero Day Initiative) reported this vulnerability.

Impact:   A remote user can bypass security features on the target system.

A remote user can decrypt portions of network traffic to obtain potentially sensitive information on the target system.

Solution:   The vendor has issued a fix.

A patch matrix is available in the vendor advisory.

The Microsoft advisory is available at:

https://technet.microsoft.com/library/security/ms15-084

Vendor URL:  technet.microsoft.com/library/security/ms15-084 (Links to External Site)
Cause:   Access control error

Message History:   None.


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