CVE-2013-2076

Advisory lineage Upstream: 0 Downstream: 3
Modified
Published: 28 Aug 2013, 17:00
Last modified:06 Aug 2024, 15:27

Vulnerability Summary

Overall Risk (default)
low
17/100
CVSS Score
4.3 MEDIUM
v2.0 (nvd)
EPSS Score
0.09% LOW
0% probability -0.09%
KEV
Not listed
Ransomware
No reports
Public exploits
None found
Dark Web
Not detected

Timeline

28 Aug 2013, 17:00
Published
Vulnerability first disclosed
06 Aug 2024, 15:27
Last Modified
Vulnerability information updated

Description

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.

CVSS Metrics

  • v2.0•MEDIUM•Score: 4.3AV:A/AC:H/Au:S/C:C/I:N/A:N

EPSS Trends

Current EPSS score: 0.09%• Percentile: 26%

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

  • xen•xen

    4.0.0 | 4.0.1 | 4.0.2 | 4.0.3 | 4.0.4 | 4.2.0 | 4.2.1 | 4.2.2 | 4.1.0 | 4.1.1 | 4.1.2 | 4.1.3 | 4.1.4 | 4.1.5

References (5)