CVE-2016-9381

Advisory lineage Upstream: 0 Downstream: 14
Modified
Published: 23 Jan 2017, 21:00
Last modified:06 Aug 2024, 02:50

Vulnerability Summary

Overall Risk (default)
medium
30/100
CVSS Score
7.5 HIGH
v3.1 (nvd)
EPSS Score
0.1% LOW
0% probability 0.00%
KEV
Not listed
Ransomware
No reports
Public exploits
None found
Dark Web
Not detected

Timeline

23 Jan 2017, 21:00
Published
Vulnerability first disclosed
06 Aug 2024, 02:50
Last Modified
Vulnerability information updated

Description

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.

CVSS Metrics

  • v3.1•HIGH•Score: 7.5CVSS:3.1/AV:L/AC:H/PR:H/UI:N/S:C/C:H/I:H/A:H
  • v2.0•MEDIUM•Score: 6.9AV:L/AC:M/Au:N/C:C/I:C/A:C

EPSS Trends

Current EPSS score: 0.10%• Percentile: 28%

Techniques & Countermeasures

  • CWE-362•Concurrent Execution using Shared Resource with Improper Synchronization ('Race Condition')

    The product contains a concurrent code sequence that requires temporary, exclusive access to a shared resource, but a timing window exists in which the shared resource can be modified by another code sequence operating concurrently.

Affected Systems

  • citrix•xenserver

    6.0.2 | 6.2.0 | 6.5 | 7.0

  • qemu•qemu

    ≤ 2.7.1 | 2.8.0:rc0

References (5)