CVE-2017-6517 Information

Description

Microsoft Skype 7.16.0.102 contains a vulnerability that could allow an unauthenticated remote attacker to execute arbitrary code on the targeted system. This vulnerability exists due to the way .dll files are loaded by Skype. It allows an attacker to load a .dll of the attacker’s choosing that could execute arbitrary code without the user’s knowledge.The specific flaw exists within the handling of DLL (api-ms-win-core-winrt-string-l1-1-0.dll) loading by the Skype.exe process.

CVSS Vector

CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H

Reference

http://packetstormsecurity.com/files/141650/Skype-7.16.0.102-DLL-Hijacking.html http://seclists.org/fulldisclosure/2017/Mar/44 http://www.securityfocus.com/bid/96969 http://www.securitytracker.com/id/1038209 https://technet.microsoft.com/security/cc308575.aspx https://twitter.com/tiger_tigerboy/status/755332687141883904 https://twitter.com/vysecurity/status/845013670103003138

Attack Complexity

LOW

Privileges Required

NONE

User Interaction Required

NONE

Scope

NONE

Confidentiality Impact

UNCHANGED

Integrity Impact

HIGH

Availability Impact

HIGH

Base Score

HIGH

Base Severity

9.8