CVE-2017-6517

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Summary

CVECVE-2017-6517
StatePUBLISHED
Assignermitre
Source PriorityCVE Program / NVD first with legacy fallback
Published2017-03-23 20:59:00 UTC
Updated2025-04-20 01:37:25 UTC
DescriptionMicrosoft 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.

Risk And Classification

Primary CVSS: v3.0 9.8 CRITICAL from [email protected]

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

Problem Types: CWE-427 | n/a

VersionSourceTypeScoreSeverityVector
3.0[email protected]Primary9.8CRITICALCVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
2.0[email protected]Primary10AV:N/AC:L/Au:N/C:C/I:C/A:C

CVSS v3.0 Breakdown

Attack Vector
Network
Attack Complexity
Low
Privileges Required
None
User Interaction
None
Scope
Unchanged
Confidentiality
High
Integrity
High
Availability
High

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

CVSS v2.0 Breakdown

Access Vector
Network
Access Complexity
Low
Authentication
None
Confidentiality
Complete
Integrity
Complete
Availability
Complete

AV:N/AC:L/Au:N/C:C/I:C/A:C

NVD Known Affected Configurations (CPE 2.3)

TypeVendorProductVersionUpdateEditionLanguage
Application Microsoft Skype 7.16.0.102 All All All

Vendor Declared Affected Products

SourceVendorProductVersionPlatforms
CNA Na N/a affected n/a Not specified

References

ReferenceSourceLinkTags
Skype 7.16.0.102 DLL Hijacking ≈ Packet Storm af854a3a-2127-422b-91ae-364da2661108 packetstormsecurity.com Exploit, Third Party Advisory, US Government Resource
Sachin Wagh na Twitterze: "One more Hit. Finally Microsoft. Listed in Microsoft Hall of Fame (June 2016 Security Researchers).… " af854a3a-2127-422b-91ae-364da2661108 twitter.com Press/Media Coverage
Security Researcher Acknowledgments for Microsoft Online Services - Prior Months af854a3a-2127-422b-91ae-364da2661108 technet.microsoft.com Not Applicable
Vincent Yiu on Twitter: "@CVEnew Totes "hi can you put this dll in your Skype folder and run skype?"" af854a3a-2127-422b-91ae-364da2661108 twitter.com Press/Media Coverage
Full Disclosure: Skype Insecure Library Loading Vulnerability (api-ms-win-core-winrt-string-l1-1-0.dll) af854a3a-2127-422b-91ae-364da2661108 seclists.org Mailing List, Third Party Advisory
Microsoft Skype Library Loading Bug Lets Remote Users Execute Arbitrary Code on the Target System in Certain Cases - SecurityTracker af854a3a-2127-422b-91ae-364da2661108 www.securitytracker.com
Skype CVE-2017-6517 DLL Loading Local Code Execution Vulnerability af854a3a-2127-422b-91ae-364da2661108 www.securityfocus.com Third Party Advisory, VDB Entry
CVE Program record CVE.ORG www.cve.org canonical
NVD vulnerability detail NVD nvd.nist.gov canonical, analysis
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