CVE-2017-8495

EUVD-2017-17445
Microsoft Windows 7 SP1, Windows Server 2008 SP2 and R2 SP1, Windows 8.1 and Windows RT 8.1, Windows Server 2012 and R2, Windows 10 Gold, 1511, 1607, and 1703, and Windows Server 2016 allows an attacker to bypass Extended Protection for Authentication when Kerberos fails to prevent tampering with the SNAME field during ticket exchange, aka "Kerberos SNAME Security Feature Bypass Vulnerability" or Orpheus' Lyre.
ProviderTypeBase ScoreAtk. VectorAtk. ComplexityPriv. RequiredVector
NISTPrimary
7.5 HIGH
NETWORK
HIGH
LOW
CVSS:3.0/AV:N/AC:H/PR:L/UI:N/S:U/C:H/I:H/A:H
Base Score
CVSS 3.x
EPSS Score
Percentile: 94%
Affected Products (NVD)
VendorProductVersion
microsoftwindows_10
-
microsoftwindows_7
*
microsoftwindows_8.1
*
microsoftwindows_rt_8.1
*
microsoftwindows_server_2008
*
microsoftwindows_server_2012
*
microsoftwindows_server_2016
*
𝑥
= Vulnerable software versions
Windows Releases
Platform
Version
Windows 10
(x64, x86)
KB4025338
1511 (x64, x86)
KB4025344
1607 (x64, x86)
KB4025339
1703 (x64, x86)
KB4025342
Windows 7
Service Pack 1 (x64, x86)
KB4025341
Windows 8.1
(x64, x86)
KB4025336
Windows RT 8.1
All
KB4025336
Windows Server 2008
Service Pack 2 (x64, x86)
KB4022746
Service Pack 2 Server Core (x64, x86)
KB4022746
Windows Server 2008 R2
Service Pack 1 (x64)
KB4025341
Service Pack 1 Server Core (x64)
KB4025341
Windows Server 2012
Server Core
KB4025343
Standard
KB4025343
Windows Server 2012 R2
Server Core
KB4025336
Standard
KB4025336
Windows Server 2016
Server Core
KB4025339
Standard
KB4025339
Common Weakness Enumeration
References
http://www.securityfocus.com/bid/99424
http://www.securitytracker.com/id/1038862
https://portal.msrc.microsoft.com/en-us/security-guidance/advisory/CVE-2017-8495
https://www.orpheus-lyre.info/
http://www.securityfocus.com/bid/99424
http://www.securitytracker.com/id/1038862
https://portal.msrc.microsoft.com/en-us/security-guidance/advisory/CVE-2017-8495
https://www.orpheus-lyre.info/