Ubuntu.comUB:CVE-2013-2076CVE-2013-2076
4.3 Medium
CVSS2
Access Vector
ADJACENT_NETWORK
Access Complexity
HIGH
Authentication
SINGLE
Confidentiality Impact
COMPLETE
Integrity Impact
NONE
Availability Impact
NONE
AV:A/AC:H/Au:S/C:C/I:N/A:N
0.001 Low
EPSS
Percentile
24.9%
Xen 4.0.x, 4.1.x, and 4.2.x, when running on AMD64 processors, only
save/restore the FOP, FIP, and FDP x87 registers in FXSAVE/FXRSTOR when an
exception is pending, which allows one domain to determine portions of the
state of floating point instructions of other domains, which can be
leveraged to obtain sensitive information such as cryptographic keys, a
similar vulnerability to CVE-2006-1056. NOTE: this is the documented
behavior of AMD64 processors, but it is inconsistent with Intel processors
in a security-relevant fashion that was not addressed by the kernels.
Notes
| Author | Note |
|---|---|
| seth-arnold | Only vulnerable if on specific AMD AMD64 CPUs with xsave hypervisor command line option |
| mdeslaur | This is XSA-52 |
Related
4.3 Medium
CVSS2
Access Vector
ADJACENT_NETWORK
Access Complexity
HIGH
Authentication
SINGLE
Confidentiality Impact
COMPLETE
Integrity Impact
NONE
Availability Impact
NONE
AV:A/AC:H/Au:S/C:C/I:N/A:N
0.001 Low
EPSS
Percentile
24.9%