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{"acknowledgement": "Red Hat would like to thank Xen project for reporting this issue. Upstream acknowledges Jan Beulich as the original reporter.", "affected_release": [{"advisory": "RHSA-2014:0285", "cpe": "cpe:/o:redhat:enterprise_linux:5", "package": "kernel-0:2.6.18-371.6.1.el5", "product_name": "Red Hat Enterprise Linux 5", "release_date": "2014-03-12T00:00:00Z"}], "bugzilla": {"description": "kernel: xen: hypercalls exposed to privilege rings 1 and 2 of HVM guests", "id": "1029111", "url": "https://bugzilla.redhat.com/show_bug.cgi?id=1029111"}, "csaw": false, "cvss": {"cvss_base_score": "6.0", "cvss_scoring_vector": "AV:L/AC:H/Au:S/C:C/I:C/A:C", "status": "verified"}, "details": ["Xen 3.0.3 through 4.1.x (possibly 4.1.6.1), 4.2.x (possibly 4.2.3), and 4.3.x (possibly 4.3.1) does not properly prevent access to hypercalls, which allows local guest users to gain privileges via a crafted application running in ring 1 or 2."], "name": "CVE-2013-4554", "public_date": "2013-11-26T00:00:00Z", "references": ["https://www.cve.org/CVERecord?id=CVE-2013-4554\nhttps://nvd.nist.gov/vuln/detail/CVE-2013-4554"], "statement": "This issue did affect the versions of the kernel-xen package as shipped with Red Hat Enterprise Linux 5, however please note that none of the guest operating system supported in Red Hat Enterprise Linux 5 are using the vulnerable set of rings of protection for privilege separation.\nThis issue did not affect the versions of the Linux kernel as shipped with Red Hat Enterprise Linux 6 and Red Hat Enterprise MRG as we did not have support for Xen hypervisor.", "threat_severity": "Moderate"}