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CyberLink StreamAuthor Insecure Library Loading Vulnerability

Disclosed September 3, 2012    Zeroday : 1093 days

Vulnerability Description:

StreamAuthor insecurely loads mfc71loc.dll and mfc71enu.dll. If an attacker convinces a user to open STA or STP files on an attacker-controlled WebDAV or SMB share, the vulnerability would be exploited, granting the attacker the ability to execute arbitrary code.



Vulnerable Software/Devices:

StreamAuthor 4.0 build 3308

Vulnerability Severity:


Exploit Availability:

Publicly Available

Exploit Impact:

Remote Code Execution
This client-side vulnerability could allow an attacker to gain the ability to execute remote arbitrary code with the same permissions as the user that is currently logged in. If the user is an administrator, the attacker could install malicious software and further compromise the system.

BeyondTrust Prevention and Detection:

BeyondTrust's Retina® Network Security Scanner scans devices to detect for this vulnerability.

  • 17051 - CyberLink StreamAuthor DLL Preloading (Zero-Day)


Block ports 139 and 445 at the perimeter firewall, prevent the WebClient service from running, and prevent DLLs from being loaded from WebDAV and remote shares.