ID de Prueba:	1.3.6.1.4.1.25623.1.0.140303
Categoría:	Citrix Xenserver Local Security Checks
Título:	Citrix XenServer Multiple Security Updates (CTX225941)
Resumen:	A number of security vulnerabilities have been identified in Citrix XenServer that may allow a; malicious administrator of a guest VM to compromise the host.
Descripción:	Summary: A number of security vulnerabilities have been identified in Citrix XenServer that may allow a malicious administrator of a guest VM to compromise the host. Vulnerability Insight: The following vulnerabilities have been addressed: - CVE-2017-12134: (High) linux: Fix Xen block IO merge-ability calculation. - CVE-2017-12135: (Medium) multiple problems with transitive grants. - CVE-2017-12136: (High) grant_table: Race conditions with maptrack free list handling. - CVE-2017-12137: (High) x86: PV privilege escalation via map_grant_ref. - CVE-2017-12855: (Low) grant_table: possibly premature clearing of GTF_writing / GTF_reading. Affected Software/OS: XenServer versions 7.2, 7.1, 7.0, 6.5, 6.2.0, 6.0.2. Solution: Apply the hotfix referenced in the advisory. CVSS Score: 7.2 CVSS Vector: AV:L/AC:L/Au:N/C:C/I:C/A:C
Referencia Cruzada:	Common Vulnerability Exposure (CVE) ID: CVE-2017-12134 Common Vulnerability Exposure (CVE) ID: CVE-2017-12135 Common Vulnerability Exposure (CVE) ID: CVE-2017-12136 Common Vulnerability Exposure (CVE) ID: CVE-2017-12137 Common Vulnerability Exposure (CVE) ID: CVE-2017-12855
Copyright	Copyright (C) 2017 Greenbone Networks GmbH

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