qemu-nbd in QEMU, as used in Xen 4.2.x, determines the format of a raw disk image based on the header, which allows local guest OS administrators to read arbitrary files on the host by modifying the header to identify a different format, which is used when the guest is restarted, a different vulnerability than CVE-2008-2004.

References

• https://nvd.nist.gov/vuln/detail/CVE-2013-1922
• http://lists.fedoraproject.org/pipermail/package-announce/2013-April/103621.html
• http://lists.fedoraproject.org/pipermail/package-announce/2013-April/103637.html
• http://lists.fedoraproject.org/pipermail/package-announce/2013-April/104036.html
• http://secunia.com/advisories/55082
• http://security.gentoo.org/glsa/glsa-201309-24.xml
• http://www.openwall.com/lists/oss-security/2013/04/15/3
• http://www.openwall.com/lists/oss-security/2013/04/16/2
• http://www.securitytracker.com/id/1028426