National Vulnerability Database

National Vulnerability Database

National Vulnerability
Database

CVE-2017-11786 Detail

Current 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."

Source:  MITRE      Last Modified:  10/13/2017      View Analysis Description

Quick Info

CVE Dictionary Entry:
CVE-2017-11786
Original release date:
10/13/2017
Last revised:
11/03/2017
Source:
US-CERT/NIST

Impact

CVSS Severity (version 3.0):
CVSS v3 Base Score:
8.8 High
Vector:
CVSS:3.0/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H (legend)
Impact Score:
5.9
Exploitability Score:
2.8
CVSS Version 3 Metrics:
Attack Vector (AV):
Network
Attack Complexity (AC):
Low
Privileges Required (PR):
None
User Interaction (UI):
Required
Scope (S):
Unchanged
Confidentiality (C):
High
Integrity (I):
High
Availability (A):
High
CVSS Severity (version 2.0):
CVSS v2 Base Score:
9.3 HIGH
Vector:
(AV:N/AC:M/Au:N/C:C/I:C/A:C) (legend)
Impact Subscore:
10.0
Exploitability Subscore:
8.6
CVSS Version 2 Metrics:
Access Vector:
Network exploitable - Victim must voluntarily interact with attack mechanism
Access Complexity:
Medium
Authentication:
Not required to exploit
Impact Type:
Allows unauthorized disclosure of information; Allows unauthorized modification; Allows disruption of service

References to Advisories, Solutions, and Tools

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Hyperlink Resource Type Source Name
http://www.securityfocus.com/bid/101156 Third Party Advisory; VDB Entry External Source BID 101156
http://www.securitytracker.com/id/1039530 Third Party Advisory; VDB Entry External Source SECTRACK 1039530
https://portal.msrc.microsoft.com/en-US/security-guidance/advisory/CVE-2017-11786 Patch; Vendor Advisory External Source CONFIRM https://portal.msrc.microsoft.com/en-US/security-guidance/advisory/CVE-2017-11786

Technical Details

Vulnerability Type (View All)

  • Permissions, Privileges, and Access Control (CWE-264)

Change History 2 change records found - show changes