CVE-2012-4425 affects privileged applications that use libgio, including spice-gtk. When a setuid or otherwise privileged program does not sanitize its environment, a local user can control the DBUS_SYSTEM_BUS_ADDRESS environment variable used by libgio. This can allow the user to gain privileges and execute arbitrary code. The underlying issue may reside in privileged applications' failure to cleanse environment variables rather than in libgio itself.
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