#VU5464 Use-after-free error in Microsoft products - CVE-2015-1649

Vulnerability identifier: #VU5464

Vulnerability risk: High

CVSSv4.0: 5.7 [CVSS:4.0/AV:L/AC:L/AT:N/PR:N/UI:A/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N/E:U/U:Amber]

CVE-ID: CVE-2015-1649

CWE-ID: CWE-416

Exploitation vector: Network

Exploit availability: No

Vulnerable software:
Microsoft Word
Client/Desktop applications / Office applications
Microsoft Office Web Apps
Client/Desktop applications / Office applications
Microsoft Office
Client/Desktop applications / Office applications
Microsoft SharePoint Server
Server applications / Application servers

Vendor: Microsoft

Description
The vulnerability allows a remote attacker to execute arbitrary code on the target system.

The weakness exists due to use-after-free error when processing Microsoft Word files. A remote attacker can create a specially crafted Microsoft Word document, trick the victim into opening it, trigger memory corruption and execute arbitrary code with privileges of the current user.

Successful exploitation results in arbitrary code execution on the vulnerable system.

Mitigation
Install update from vendor's website.

Vulnerable software versions

Microsoft Word: 2007, 2010

Microsoft SharePoint Server: 2010

Microsoft Office Web Apps: 2010 Service Pack 2

Microsoft Office: 2007, 2010

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External links
https://technet.microsoft.com/en-us/library/security/ms15-033.aspx

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Q & A

Can this vulnerability be exploited remotely?

Yes. This vulnerability can be exploited by a remote non-authenticated attacker via the Internet.

Is there known malware, which exploits this vulnerability?

No. We are not aware of malware exploiting this vulnerability.