CVE-2018-8340 — MEDIUM (6.5)

Vulnerability Description

A security feature bypass vulnerability exists when Active Directory Federation Services (AD FS) improperly handles multi-factor authentication requests, aka "AD FS Security Feature Bypass Vulnerability." This affects Windows Server 2016, Windows Server 2012 R2, Windows 10 Servers.

CVSS Score

6.5

MEDIUM

CVSS:3.0/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:N/A:N

Attack Vector

NETWORK

Attack Complexity

LOW

Privileges Required

LOW

User Interaction

NONE

Scope

UNCHANGED

Confidentiality

HIGH

Integrity

NONE

Availability

NONE

Affected Products

Vendor	Product	Versions
Microsoft	Windows Server 2012	r2
Microsoft	Windows Server 2016	-

References

http://www.securityfocus.com/bid/105029Third Party AdvisoryVDB Entry
http://www.securitytracker.com/id/1041474Third Party AdvisoryVDB Entry
https://portal.msrc.microsoft.com/en-US/security-guidance/advisory/CVE-2018-8340PatchVendor Advisory
http://www.securityfocus.com/bid/105029Third Party AdvisoryVDB Entry
http://www.securitytracker.com/id/1041474Third Party AdvisoryVDB Entry
https://portal.msrc.microsoft.com/en-US/security-guidance/advisory/CVE-2018-8340PatchVendor Advisory

FAQ

What is CVE-2018-8340?

CVE-2018-8340 is a vulnerability with a CVSS score of 6.5 (MEDIUM). A security feature bypass vulnerability exists when Active Directory Federation Services (AD FS) improperly handles multi-factor authentication requests, aka "AD FS Security Feature Bypass Vulnerabili...

How severe is CVE-2018-8340?

CVE-2018-8340 has been rated MEDIUM with a CVSS base score of 6.5/10. Review the CVSS metrics above for detailed severity breakdown.

Is there a patch for CVE-2018-8340?

Check the references section above for vendor advisories and patch information. Affected products include: Microsoft Windows Server 2012, Microsoft Windows Server 2016.