CVE-2017-8495 — Improper Authentication in Microsoft Windows 10

CWE-287 — Improper Authentication5 documents5 sources
Severity
7.5HIGHNVD
EPSS
16.4%
top 5.11%
CISA KEV
Not in KEV
Exploit
No known exploits
Affected products
15
Microsoft Windows 10Microsoft Windows Server 2008Microsoft Windows Server 2012+12 more
Timeline
PublishedJul 11
Latest updateMay 17

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 vector

CVSS:3.0/AV:N/AC:H/PR:L/UI:N/S:U/C:H/I:H/A:HExploitability: 1.6 | Impact: 5.9

Affected Packages14 packages

Patches

Patch: portal.msrc.microsoft.com ↗Patch: portal.msrc.microsoft.com ↗

🔴Vulnerability Details

1
GHSA
GHSA-95f7-rc94-rqj7: Microsoft Windows 7 SP1, Windows Server 2008 SP2 and R2 SP1, Windows 8↗2022-05-17
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📋Vendor Advisories

1
Microsoft
Kerberos SNAME Security Feature Bypass Vulnerability↗2017-07-11
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🕵️Threat Intelligence

1
Talos
Microsoft Patch Tuesday - July 2017↗2017-07-11
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💬Community

1
Bugzilla
CVE-2017-10388 OpenJDK: use of unprotected sname in Kerberos client (Libraries, 8178794)↗2017-10-13
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