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CVE-2015-8555

Date: April 13, 2016

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.

Language: C

Severity Score

Related Resources (11)

https://nvd.nist.gov/vuln/detail/CVE-2015-8555
https://security.gentoo.org/glsa/201604-03
http://support.citrix.com/article/CTX203879
http://www.debian.org/security/2016/dsa-3519
https://access.redhat.com/security/cve/CVE-2015-8555
http://www.securitytracker.com/id/1034477
https://security-tracker.debian.org/tracker/CVE-2015-8555
http://www.oracle.com/technetwork/topics/security/ovmbulletinjul2016-3090546.html
http://xenbits.xen.org/xsa/advisory-165.html
http://www.securityfocus.com/bid/79543
https://www.mend.io/vulnerability-database/CVE-2015-8555

Severity Score

Weakness Type (CWE)

Exposure of Sensitive Information to an Unauthorized Actor

CWE-200

CVSS v3.1

Base Score:
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

CVSS v2

Base Score:
Access Vector (AV): NETWORK
Access Complexity (AC): LOW
Authentication (AU): NONE
Confidentiality (C): PARTIAL
Integrity (I): NONE
Availability (A): NONE
Additional information:

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