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Servers and applications

CVE-2013-1442

Xen 4.0 through 4.3.x, when using AVX or LWP capable CPUs, does not properly clear previous data from registers when using an XSAVE or XRSTOR to extend the state components of a saved or restored vCPU after touching other restored extended registers, which allows local guest OSes to obtain sensitive information by reading the registers.

Severity
Low 1.2
Published
30 Sept 2013
Last changed
16 Jun 2026
Added to UpHeron
1 Nov 2026
Exploit chance
0.4% in the next 30 daysHigher than 31% of CVEs. EPSS by FIRST, 12 Nov 2026
Weakness
Information exposure (CWE-200)
Attack
Needs local access · Only under certain conditions · No login needed
Attacker can
Read some data
CVSS vector
AV:L/AC:H/Au:N/C:P/I:N/A:N
Sources
NVD

Affected software

SoftwareAffected versions
XenServers and applications · cpe:o:xen:xen
  • Version 4.3.0
  • Version 4.2.3
  • Version 4.2.2
  • Version 4.2.1
All 16 release lines
  • Version 4.0.0
  • Version 4.0.1
  • Version 4.0.2
  • Version 4.0.3
  • Version 4.0.4
  • Version 4.1.0
  • Version 4.1.1
  • Version 4.1.2
  • Version 4.1.3
  • Version 4.1.4
  • Version 4.1.5
  • Version 4.2.0
  • Version 4.2.1
  • Version 4.2.2
  • Version 4.2.3
  • Version 4.3.0

References

  • NVD https://nvd.nist.gov/vuln/detail/CVE-2013-1442
  • CVE.org https://www.cve.org/CVERecord?id=CVE-2013-1442