CVE-2016-3159

Aliases:DEBIAN-CVE-2016-3159
Advisory lineage Upstream: 0 Downstream: 10
Modified
Published: 13 Apr 2016, 16:00
Last modified:05 Aug 2024, 23:47

Vulnerability Summary

Overall Risk (default)
low
15/100
CVSS Score
3.8 LOW
v3.0 (nvd)
EPSS Score
0.4% LOW
0% probability +0.36%
KEV
Not listed
Ransomware
No reports
Public exploits
None found
Dark Web
Not detected

Timeline

13 Apr 2016, 16:00
Published
Vulnerability first disclosed
05 Aug 2024, 23:47
Last Modified
Vulnerability information updated

Description

The fpu_fxrstor function in arch/x86/i387.c in Xen 4.x does not properly handle writes to the hardware FSW.ES bit when running on AMD64 processors, which allows local guest OS users to obtain sensitive register content information from another guest by leveraging pending exception and mask bits. NOTE: this vulnerability exists because of an incorrect fix for CVE-2013-2076.

CVSS Metrics

  • v3.0•LOW•Score: 3.8CVSS:3.0/AV:L/AC:L/PR:L/UI:N/S:C/C:L/I:N/A:N
  • v2.0•LOW•Score: 1.7AV:L/AC:L/Au:S/C:P/I:N/A:N

EPSS Trends

Current EPSS score: 0.40%• Percentile: 34%

Techniques & Countermeasures

  • CWE-200•Exposure of Sensitive Information to an Unauthorized Actor

    The product exposes sensitive information to an actor that is not explicitly authorized to have access to that information.

  • CWE-284•Improper Access Control

    The product does not restrict or incorrectly restricts access to a resource from an unauthorized actor.

Affected Systems

  • debian•xen

    < 4.8.0~rc3-1 | < 4.8.0~rc3-1 | < 4.8.0~rc3-1 | < 4.8.0~rc3-1

  • debian•debian_linux

    8.0

  • fedoraproject•fedora

    22 | 23

  • oracle•vm_server

    3.3 | 3.4

  • xen•xen

    ≥ 4.3.0, ≤ 4.3.4 | ≥ 4.4.0, ≤ 4.4.4 | ≥ 4.5.0, ≤ 4.5.3 | ≥ 4.6.0, ≤ 4.6.1

References (10)