CVE-2017-11786

Skype for Business in Microsoft Lync 2013 SP1 and Skype for Business 2016 allows an attacker to steal an authentication hash that can be reused elsewhere, due to how Skype for Business handles authentication requests, aka "Skype for Business Elevation of Privilege Vulnerability."

CVSS v3.0 8.8 HIGH
CVSS v2.0 9.3 HIGH

8.8^/10

CVSS v3.0 : HIGH

Vector : AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H

Exploitability : 2.8 / Impact : 5.9

Attack Vector NETWORK

Attack Complexity LOW

Privileges Required NONE

User Interaction REQUIRED

Confidentiality Impact HIGH

Integrity Impact HIGH

Availability Impact HIGH

Scope UNCHANGED

9.3^/10

CVSS v2.0 : HIGH

Vector : AV:N/AC:M/Au:N/C:C/I:C/A:C

Exploitability : 8.6 / Impact : 10.0

Access Vector NETWORK

Access Complexity MEDIUM

Authentication NONE

Confidentiality Impact COMPLETE

Integrity Impact COMPLETE

Availability Impact COMPLETE

References

Link	Resource
https://portal.msrc.microsoft.com/en-US/security-guidance/advisory/CVE-2017-11786	Vendor Advisory Patch
http://www.securitytracker.com/id/1039530	Third Party Advisory VDB Entry
http://www.securityfocus.com/bid/101156	Third Party Advisory VDB Entry

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Configurations

Configuration 1 (hide)

OR	cpe:2.3:a:microsoft:skype_for_business:2016:::::::*
	cpe:2.3:a:microsoft:lync:2013:sp1::::::

Information

Published : 2017-10-13 06:29

Updated : 2019-10-02 17:03

NVD link : CVE-2017-11786

Mitre link : CVE-2017-11786

JSON object : View

CWE

CWE-294

Authentication Bypass by Capture-replay

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Products Affected

microsoft

skype_for_business
lync

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