7.5high
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, 1…
Published 9 y ago · modified 4 mo ago · JSON
CVSS
7.5
v3.0 · NVD
CISA KEV
No
not known exploited
EPSS
4.6%
percentile 92%
Public exploits
0
none known
Summary
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.
Exploit prediction (EPSS)
4.62% probability of exploitation in the next 30 days, higher than 92% of all scored CVEs.
CVSS scores
| Assigned by | Version | Score | Vector |
|---|---|---|---|
| NVD | 3.0 | 7.5 | CVSS:3.0/AV:N/AC:H/PR:L/UI:N/S:U/C:H/I:H/A:H |
| NVD | 2.0 | 6.0 | AV:N/AC:M/Au:S/C:P/I:P/A:P |
Affected products
- Microsoft Corporation 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.
Classification
- Weakness
- CWE-287 Improper Authentication
References
- orpheus-lyre.info / · x_refsource_MISC, x_transferred
- portal.msrc.microsoft.com /en-us/security-guidance/advisory/CVE-2017-8495 · x_refsource_CONFIRM, x_transferred
- securityfocus.com /bid/99424 · vdb-entry, x_refsource_BID, x_transferred
- securitytracker.com /id/1038862 · vdb-entry, x_refsource_SECTRACK, x_transferred
Sources
- CVE List: CVE-2017-8495
- NVD: CVE-2017-8495
vulnwire keeps one entry per vulnerability: the CVE id wins, then GHSA; records that alias each other are merged. Machine-readable: JSON.