Vulnerability Description
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.
CVSS Score
HIGH
Affected Products
| Vendor | Product | Versions |
|---|---|---|
| Microsoft | Windows 10 | - |
| Microsoft | Windows 7 | All versions |
| Microsoft | Windows 8.1 | All versions |
| Microsoft | Windows Rt 8.1 | All versions |
| Microsoft | Windows Server 2008 | All versions |
| Microsoft | Windows Server 2012 | All versions |
| Microsoft | Windows Server 2016 | All versions |
Related Weaknesses (CWE)
References
- http://www.securityfocus.com/bid/99424Third Party AdvisoryVDB Entry
- http://www.securitytracker.com/id/1038862Third Party AdvisoryVDB Entry
- https://portal.msrc.microsoft.com/en-us/security-guidance/advisory/CVE-2017-8495PatchVendor Advisory
- https://www.orpheus-lyre.info/Third Party Advisory
- http://www.securityfocus.com/bid/99424Third Party AdvisoryVDB Entry
- http://www.securitytracker.com/id/1038862Third Party AdvisoryVDB Entry
- https://portal.msrc.microsoft.com/en-us/security-guidance/advisory/CVE-2017-8495PatchVendor Advisory
- https://www.orpheus-lyre.info/Third Party Advisory
FAQ
What is CVE-2017-8495?
CVE-2017-8495 is a vulnerability with a CVSS score of 7.5 (HIGH). 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 attack...
How severe is CVE-2017-8495?
CVE-2017-8495 has been rated HIGH with a CVSS base score of 7.5/10. Review the CVSS metrics above for detailed severity breakdown.
Is there a patch for CVE-2017-8495?
Check the references section above for vendor advisories and patch information. Affected products include: Microsoft Windows 10, Microsoft Windows 7, Microsoft Windows 8.1, Microsoft Windows Rt 8.1, Microsoft Windows Server 2008.