Vulnerability Monitor

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CVE-2013-2076

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.

Security Impact Summary

CVE-2013-2076 is a security vulnerability that . Impacting 1 product from xen organizations running these solutions should prioritize assessment and patching.

Historical Context

Documented in 2013, this vulnerability occurred amid the cloud computing expansion era, where traditional network perimeter security models were being reevaluated. Organizations were transitioning from isolated infrastructure to interconnected systems, creating new attack surfaces that vulnerabilities like this could exploit.

Published

2013-08-28T21:55:08.347

Last Modified

2025-04-11T00:51:21.963

Status

Deferred

Source

[email protected]

Severity

CVSSv2: 4.3 (MEDIUM)

CVSSv2 Vector

AV:A/AC:H/Au:S/C:C/I:N/A:N

Access Vector: ADJACENT_NETWORK
Access Complexity: HIGH
Authentication: SINGLE
Confidentiality Impact: COMPLETE
Integrity Impact: NONE
Availability Impact: NONE

Exploitability Score

2.5

Impact Score

6.9

Weaknesses

Type: Primary
CWE-200

Affected Vendors & Products

Type	Vendor	Product	Version/Range	Vulnerable?
Operating System	xen	xen	4.0.0	Yes
Operating System	xen	xen	4.0.1	Yes
Operating System	xen	xen	4.0.2	Yes
Operating System	xen	xen	4.0.3	Yes
Operating System	xen	xen	4.0.4	Yes
Operating System	xen	xen	4.2.0	Yes
Operating System	xen	xen	4.2.1	Yes
Operating System	xen	xen	4.2.2	Yes
Operating System	xen	xen	4.1.0	Yes
Operating System	xen	xen	4.1.1	Yes
Operating System	xen	xen	4.1.2	Yes
Operating System	xen	xen	4.1.3	Yes
Operating System	xen	xen	4.1.4	Yes
Operating System	xen	xen	4.1.5	Yes

References

http://lists.opensuse.org/opensuse-security-announce/2014-03/msg00021.html ([email protected])
http://secunia.com/advisories/55082 ([email protected])
http://security.gentoo.org/glsa/glsa-201309-24.xml ([email protected])
http://www.debian.org/security/2014/dsa-3006 ([email protected])
http://www.openwall.com/lists/oss-security/2013/06/03/1 ([email protected])
http://lists.opensuse.org/opensuse-security-announce/2014-03/msg00021.html (af854a3a-2127-422b-91ae-364da2661108)
http://secunia.com/advisories/55082 (af854a3a-2127-422b-91ae-364da2661108)
http://security.gentoo.org/glsa/glsa-201309-24.xml (af854a3a-2127-422b-91ae-364da2661108)
http://www.debian.org/security/2014/dsa-3006 (af854a3a-2127-422b-91ae-364da2661108)
http://www.openwall.com/lists/oss-security/2013/06/03/1 (af854a3a-2127-422b-91ae-364da2661108)

How SecUtils Interprets This CVE

SecUtils normalizes and enriches National Vulnerability Database (NVD) records by standardizing vendor and product identifiers, aggregating vulnerability metadata from both NVD and MITRE sources, and providing structured context for security teams. For xen's affected products, we extract Common Platform Enumeration (CPE) data, Common Weakness Enumeration (CWE) classifications, CVSS severity metrics, and reference data to enable rapid vulnerability prioritization and asset correlation. This record contains no exploit code, proof-of-concept instructions, or attack methodologies—only defensive intelligence necessary for patch management, risk assessment, and security operations.