CVE-2015-8555

Advisory lineage Upstream: 0 Downstream: 11
Modified
Published: 13 Apr 2016, 15:00
Last modified:06 Aug 2024, 08:20

Vulnerability Summary

Overall Risk (default)
medium
35/100
CVSS Score
8.6 HIGH
v3.0 (nvd)
EPSS Score
0.55% LOW
1% probability 0.00%
KEV
Not listed
Ransomware
No reports
Public exploits
None found
Dark Web
Not detected

Timeline

13 Apr 2016, 15:00
Published
Vulnerability first disclosed
06 Aug 2024, 08:20
Last Modified
Vulnerability information updated

Description

Xen 4.6.x, 4.5.x, 4.4.x, 4.3.x, and earlier do not initialize x86 FPU stack and XMM registers when XSAVE/XRSTOR are not used to manage guest extended register state, which allows local guest domains to obtain sensitive information from other domains via unspecified vectors.

CVSS Metrics

  • v3.0•HIGH•Score: 8.6CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:C/C:H/I:N/A:N
  • v2.0•MEDIUM•Score: 5AV:N/AC:L/Au:N/C:P/I:N/A:N

EPSS Trends

Current EPSS score: 0.55%• Percentile: 68%

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.

Affected Systems

  • citrix•xenserver

    6.0

  • xen•xen

    4.3.0 | 4.3.1 | 4.3.2 | 4.3.3 | 4.3.4 | 4.4.0 | 4.4.1 | 4.4.2 | 4.4.3 | 4.4.4 | 4.5.0 | 4.5.1 | 4.5.2 | 4.5.3 | 4.6.0 | 4.6.1

References (7)