Double free in Microsoft Silverlight - CVE-2012-0176

Vulnerability identifier: #VU2998

CSH Severity: High

CVSS v4.0: CVSS:4.0/AV:N/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-2012-0176

CWE-ID: CWE-415

Exploitation vector: Remote access

Exploit availability: No public exploit available

Vendor: Microsoft

Affected software:
Microsoft Silverlight

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

The weakness exists due to double-free error when rendering specially crafted XAML glyphs. A remote attacker can create a Web site containing a malicious XAML browser application, trick the victim into visiting it, trigger memory corruption and execute arbitrary code with privileges of the current user.

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

Insatll update from vendor's wenbsite:

Microsoft Silverlight 4 when installed on all supported releases of Microsoft Windows clients:
https://www.microsoft.com/downloads/details.aspx?familyid=8ea4fc68-7b03-43f6-bc41-af47e7aa8c7b
Microsoft Silverlight 4 when installed on all supported releases of Microsoft Windows servers:
https://www.microsoft.com/downloads/details.aspx?familyid=8ea4fc68-7b03-43f6-bc41-af47e7aa8c7b

• https://technet.microsoft.com/en-us/library/security/ms12-034