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{"acknowledgement": "Red Hat would like to thank Xen project for reporting this issue.", "bugzilla": {"description": "xen: libxl partially sets up HVM passthrough even with disabled iommu", "id": "1006298", "url": "https://bugzilla.redhat.com/show_bug.cgi?id=1006298"}, "csaw": false, "cvss": {"cvss_base_score": "6.5", "cvss_scoring_vector": "AV:A/AC:H/Au:S/C:C/I:C/A:C", "status": "draft"}, "details": ["The xenlight library (libxl) in Xen 4.0.x through 4.2.x, when IOMMU is disabled, provides access to a busmastering-capable PCI passthrough device before the IOMMU setup is complete, which allows local HVM guest domains to gain privileges or cause a denial of service via a DMA instruction."], "name": "CVE-2013-4329", "package_state": [{"cpe": "cpe:/o:redhat:enterprise_linux:5", "fix_state": "Not affected", "package_name": "xen", "product_name": "Red Hat Enterprise Linux 5"}], "public_date": "2013-09-10T00:00:00Z", "references": ["https://www.cve.org/CVERecord?id=CVE-2013-4329\nhttps://nvd.nist.gov/vuln/detail/CVE-2013-4329"], "statement": "Not vulnerable.\nThis issue does not affect the versions of the xen package as shipped with Red Hat Enterprise Linux 5 as it does not provide support for the libxl toolstack.\nThis issue does not affect Red Hat Enterprise Linux 6 and Red Hat Enterprise MRG 2.", "threat_severity": "Important"}