Vulnerability Monitor

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CVE-2017-8495

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.

Published

2017-07-11T21:29:00.593

Last Modified

2025-04-20T01:37:25.860

Status

Deferred

Source

[email protected]

Severity

CVSSv3.0: 7.5 (HIGH)

CVSSv2 Vector

AV:N/AC:M/Au:S/C:P/I:P/A:P

  • Access Vector: NETWORK
  • Access Complexity: MEDIUM
  • Authentication: SINGLE
  • Confidentiality Impact: PARTIAL
  • Integrity Impact: PARTIAL
  • Availability Impact: PARTIAL
Exploitability Score

6.8

Impact Score

6.4

Weaknesses
  • Type: Primary
    CWE-287
Affected Vendors & Products
Type Vendor Product Version/Range Vulnerable?
Operating System microsoft windows_10 - Yes
Operating System microsoft windows_10 1511 Yes
Operating System microsoft windows_10 1607 Yes
Operating System microsoft windows_10 1703 Yes
Operating System microsoft windows_7 * Yes
Operating System microsoft windows_8.1 * Yes
Operating System microsoft windows_rt_8.1 * Yes
Operating System microsoft windows_server_2008 * Yes
Operating System microsoft windows_server_2008 r2 Yes
Operating System microsoft windows_server_2012 * Yes
Operating System microsoft windows_server_2012 r2 Yes
Operating System microsoft windows_server_2016 * Yes
References