Advisory Details

April 6th, 2017

Microsoft Skype DLL Planting Remote Code Execution Vulnerability

ZDI-16-680
ZDI-CAN-3577

CVE ID
CVSS SCORE 7.5, AV:N/AC:L/Au:N/C:P/I:P/A:P
AFFECTED VENDORS Microsoft
AFFECTED PRODUCTS Skype
VULNERABILITY DETAILS


This vulnerability allows remote attackers to execute arbitrary code on vulnerable installations of Microsoft Skype. User interaction is required to exploit this vulnerability in that the target must visit a malicious page or open a malicious file.

The specific flaw exists within the handling of .skype files. By providing a crafted file, an attacker is able to load an arbitrary DLL. This allows an attacker to execute arbitrary code in the context of the process.

ADDITIONAL DETAILS Microsoft has issued an update to correct this vulnerability. More details can be found at:
https://technet.microsoft.com/en-us/security/cc308575#0419
DISCLOSURE TIMELINE
  • 2016-03-29 - Vulnerability reported to vendor
  • 2017-04-06 - Coordinated public release of advisory
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