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CVE-2017-11786

nvd nist
Published: Oct 13, 2017Modified: May 13, 2026

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8.8
Vector
CVSS:3.0/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H
Exploitability: 2.8 / Impact: 5.9
Source: NVD

Description

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."

Affected (2)

Microsoft
2 products
Lync
Skype For Business
Configuration A
2 vulnerable
Vulnerable SoftwareAffected Versions
Lync
Version 2013 sp1
Skype For Business
Version 2016

Related CWEs

CWE-294
Authentication Bypass by Capture-replay
A capture-replay flaw exists when the design of the product makes it possible for a malicious user to sniff network traffic and bypass authentication by replaying it to the server in question to the same effect as the original message (or with minor changes).

References (6)

Source: secure@microsoft.com
Third Party AdvisoryVDB Entry
Source: secure@microsoft.com
Third Party AdvisoryVDB Entry
Source: secure@microsoft.com
PatchVendor Advisory
Source: af854a3a-2127-422b-91ae-364da2661108
Third Party AdvisoryVDB Entry
Source: af854a3a-2127-422b-91ae-364da2661108
Third Party AdvisoryVDB Entry
Source: af854a3a-2127-422b-91ae-364da2661108
PatchVendor Advisory

Timeline

No history available yet.