Attacker Value
Unknown
(0 users assessed)
Exploitability
Unknown
(0 users assessed)
User Interaction
None
Privileges Required
None
Attack Vector
Network
0

CVE-2015-8555

Disclosure Date: April 13, 2016
Add MITRE ATT&CK tactics and techniques that apply to this CVE.

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.

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CVSS V3 Severity and Metrics
Base Score:
8.6 High
Impact Score:
4
Exploitability Score:
3.9
Vector:
CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:C/C:H/I:N/A:N
Attack Vector (AV):
Network
Attack Complexity (AC):
Low
Privileges Required (PR):
None
User Interaction (UI):
None
Scope (S):
Changed
Confidentiality (C):
High
Integrity (I):
None
Availability (A):
None

General Information

Vendors

  • citrix,
  • xen

Products

  • xen 4.3.0,
  • xen 4.3.1,
  • xen 4.3.2,
  • xen 4.3.3,
  • xen 4.3.4,
  • xen 4.4.0,
  • xen 4.4.1,
  • xen 4.4.2,
  • xen 4.4.3,
  • xen 4.4.4,
  • xen 4.5.0,
  • xen 4.5.1,
  • xen 4.5.2,
  • xen 4.5.3,
  • xen 4.6.0,
  • xen 4.6.1,
  • xenserver 6.0
Technical Analysis