Executive Summary

Name CVE-2017-11786 First vendor Publication 2017-10-13
Vendor Cve Last vendor Modification 2019-10-03

Security-Database Scoring CVSS v3

Cvss vector : CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H
Overall CVSS Score 8.8
Base Score 8.8 Environmental Score 8.8
impact SubScore 5.9 Temporal Score 8.8
Exploitabality Sub Score 2.8
Attack Vector Network Attack Complexity Low
Privileges Required None User Interaction Required
Scope Unchanged Confidentiality Impact High
Integrity Impact High Availability Impact High
Calculate full CVSS 3.0 Vectors scores

Security-Database Scoring CVSS v2

Cvss vector : (AV:N/AC:M/Au:N/C:C/I:C/A:C)
Cvss Base Score 9.3 Attack Range Network
Cvss Impact Score 10 Attack Complexity Medium
Cvss Expoit Score 8.6 Authentication None Required
Calculate full CVSS 2.0 Vectors scores


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."

Original Source

Url : http://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2017-11786

CWE : Common Weakness Enumeration

% Id Name
100 % CWE-294 Authentication Bypass by Capture-replay

CPE : Common Platform Enumeration

Application 1
Application 1

Nessus® Vulnerability Scanner

Date Description
2017-10-10 Name : The Microsoft Skype for Business or Microsoft Lync installation on the remote...
File : smb_nt_ms17_oct_skype.nasl - Type : ACT_GATHER_INFO

Sources (Detail)

Source Url
BID http://www.securityfocus.com/bid/101156
CONFIRM https://portal.msrc.microsoft.com/en-US/security-guidance/advisory/CVE-2017-1...
SECTRACK http://www.securitytracker.com/id/1039530

Alert History

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Date Informations
2020-05-23 00:55:18
  • Multiple Updates
2019-10-03 09:19:58
  • Multiple Updates
2017-11-03 21:23:53
  • Multiple Updates
2017-10-15 09:23:35
  • Multiple Updates
2017-10-13 17:23:40
  • First insertion