7.8high
CVE-2016-9386
The x86 emulator in Xen does not properly treat x86 NULL segments as unusable when accessing memory, which might allow local HVM guest user…
Published 9 y ago · modified 4 mo ago · JSON
CVSS
7.8
v3.0 · NVD
CISA KEV
No
not known exploited
EPSS
0.4%
percentile 39%
Public exploits
0
none known
Summary
The x86 emulator in Xen does not properly treat x86 NULL segments as unusable when accessing memory, which might allow local HVM guest users to gain privileges via vectors involving "unexpected" base/limit values.
Exploit prediction (EPSS)
0.45% probability of exploitation in the next 30 days, higher than 39% of all scored CVEs.
CVSS scores
| Assigned by | Version | Score | Vector |
|---|---|---|---|
| NVD | 3.0 | 7.8 | CVSS:3.0/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H |
| NVD | 2.0 | 4.6 | AV:L/AC:L/Au:N/C:P/I:P/A:P |
Classification
- Weakness
- CWE-264 Permissions, Privileges, and Access Controls
References
- securityfocus.com /bid/94471 · vdb-entry, x_refsource_BID, x_transferred
- security.gentoo.org /glsa/201612-56 · vendor-advisory, x_refsource_GENTOO, x_transferred
- support.citrix.com /article/CTX218775 · x_refsource_CONFIRM, x_transferred
- xenbits.xen.org /xsa/advisory-191.html · x_refsource_CONFIRM, x_transferred
- securitytracker.com /id/1037340 · vdb-entry, x_refsource_SECTRACK, x_transferred
Sources
- CVE List: CVE-2016-9386
- NVD: CVE-2016-9386
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