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ID de Prueba:1.3.6.1.4.1.25623.1.0.106915
Categoría:Citrix Xenserver Local Security Checks
Título:Citrix XenServer Multiple Security Updates (CTX224740)
Resumen:A number of security issues have been identified within Citrix XenServer.
Descripción:Summary:
A number of security issues have been identified within Citrix XenServer.

Vulnerability Insight:
The following vulnerabilities have been addressed:

- CVE-2017-10920, CVE-2017-10921, CVE-2017-10922 (High): Grant table operations mishandle reference counts.

- CVE-2017-10918 (High): Stale P1M mappings due to insufficient error checking.

- CVE-2017-10912 (Medium): Page transfer may allow PV guest to elevate privilege.

- CVE-2017-10913, CVE-2017-10914 (Medium): Races in the grant table unmap code.

- CVE-2017-10915 (Medium): x85: insufficient reference counts during shadow emulation.

- CVE-2017-10917 (Medium): NULL pointer deref in event channel poll.

- CVE-2017-10911 (Low): blkif responses leak backend stack data.

Vulnerability Impact:
These issues could, if exploited, allow a malicious administrator of a guest VM
to compromise the host.

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:
10.0

CVSS Vector:
AV:N/AC:L/Au:N/C:C/I:C/A:C

Referencia Cruzada: Common Vulnerability Exposure (CVE) ID: CVE-2017-10911
Common Vulnerability Exposure (CVE) ID: CVE-2017-10912
Common Vulnerability Exposure (CVE) ID: CVE-2017-10913
Common Vulnerability Exposure (CVE) ID: CVE-2017-10914
Common Vulnerability Exposure (CVE) ID: CVE-2017-10915
Common Vulnerability Exposure (CVE) ID: CVE-2017-10917
Common Vulnerability Exposure (CVE) ID: CVE-2017-10918
Common Vulnerability Exposure (CVE) ID: CVE-2017-10920
Common Vulnerability Exposure (CVE) ID: CVE-2017-10921
Common Vulnerability Exposure (CVE) ID: CVE-2017-10922
CopyrightCopyright (C) 2017 Greenbone Networks GmbH

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