CVE-2017-11786

CVSS V2 High 9.3 CVSS V3 High 8.8
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."
Overview
  • CVE ID
  • CVE-2017-11786
  • Assigner
  • secure@microsoft.com
  • Vulnerability Status
  • Analyzed
  • Published Version
  • 2017-10-13T13:29:00
  • Last Modified Date
  • 2019-10-03T00:03:26
Weakness Enumerations
CWE URL
CWE-294 http://cwe.mitre.org/data/definitions/294.html
CPE Configuration (Product)
CPE Vulnerable Operator Version Start Version End
cpe:2.3:a:microsoft:lync:2013:sp1:*:*:*:*:*:* 1 OR
cpe:2.3:a:microsoft:skype_for_business:2016:*:*:*:*:*:*:* 1 OR
CVSS Version 2
  • Version
  • 2.0
  • Vector String
  • AV:N/AC:M/Au:N/C:C/I:C/A:C
  • Access Vector
  • NETWORK
  • Access Compatibility
  • MEDIUM
  • Authentication
  • NONE
  • Confidentiality Impact
  • COMPLETE
  • Integrity Impact
  • COMPLETE
  • Availability Impact
  • COMPLETE
  • Base Score
  • 9.3
  • Severity
  • HIGH
  • Exploitability Score
  • 8.6
  • Impact Score
  • 10
CVSS Version 3
  • Version
  • 3.0
  • Vector String
  • CVSS:3.0/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H
  • Attack Vector
  • NETWORK
  • Attack Compatibility
  • LOW
  • Privileges Required
  • NONE
  • User Interaction
  • REQUIRED
  • Scope
  • UNCHANGED
  • Confidentiality Impact
  • HIGH
  • Availability Impact
  • HIGH
  • Base Score
  • 8.8
  • Base Severity
  • HIGH
  • Exploitability Score
  • 2.8
  • Impact Score
  • 5.9
References
Reference URL Reference Tags
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
Sources
Source Name Source URL
NIST https://nvd.nist.gov/vuln/detail/CVE-2017-11786
MITRE https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2017-11786
History
Created Old Value New Value Data Type Notes
2022-05-10 17:20:56 Added to TrackCVE
2022-12-02 21:55:27 2017-10-13T13:29Z 2017-10-13T13:29:00 CVE Published Date updated
2022-12-02 21:55:27 2019-10-03T00:03:26 CVE Modified Date updated
2022-12-02 21:55:27 Analyzed Vulnerability Status updated