Permissions, Privileges, and Access Controls in Xen - CVE-2016-9381
Published: January 23, 2017 / Updated: July 28, 2020
Vulnerability identifier: #VU32222
CSH Severity: Low
CVSS v4.0: CVSS:4.0/AV:L/AC:L/AT:P/PR:H/UI:N/VC:N/VI:N/VA:N/SC:H/SI:H/SA:H/E:U/U:Clear
CVE-ID: CVE-2016-9381
CWE-ID: CWE-264
Exploitation vector: Local access
Exploit availability:
No public exploit available
Vendor: Xen Project
Affected software:
Xen
Xen
Detailed vulnerability description
The vulnerability allows a local privileged user to execute arbitrary code.
Race condition in QEMU in Xen allows local x86 HVM guest OS administrators to gain privileges by changing certain data on shared rings, aka a "double fetch" vulnerability.
How to mitigate CVE-2016-9381
Install update from vendor's website.