The libxlDomainGetNumaParameters function in the libxl driver (libxl/libxl_driver.c) in libvirt before 1.2.1 does not properly initialize the nodemap, which allows local users to cause a denial of service (invalid free operation and crash) or possibly execute arbitrary code via an inactive domain to the virsh numatune command.
CVSS Severity (version 2.0):
Impact Subscore: 6.4
Exploitability Subscore: 5.1
CVSS Version 2 Metrics:
Access Vector: Local network exploitable
Access Complexity: Low
Authentication: Required to exploit
Impact Type: Allows unauthorized disclosure of information; Allows unauthorized modification; Allows disruption of service
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[libvirt] 20131220 [PATCH] libxl: avoid crashing if calling `virsh numatune' on inactive domain
[libvirt] 20131224 CVE-2013-6457 Re: [PATCH] libxl: avoid crashing if calling `virsh numatune' on inactive domain