Citrix XenServer Multiple Security Updates (CTX224740)

Published: 2017-06-30 09:20:13
CVE Author: NIST National Vulnerability Database

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

Detection Type:
Linux Distribution Package

Solution Type:
Vendor Patch

Summary:
A number of security issues have been identified within Citrix XenServer. These issues could, if exploited, allow a malicious administrator of a guest VM to compromise the host. The issues have the identifiers: - 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.

Detection Method:
Check the installed hotfixes.

Affected Versions:
XenServer versions 7.2, 7.1, 7.0, 6.5, 6.2.0, 6.0.2.

Recommendations:
Apply the hotfix referenced in the advisory.

NIST (National Institute of Standards and Technology) NVD (National Vulnerability Database)

https://nvd.nist.gov/vuln/detail/CVE-2017-10911
https://nvd.nist.gov/vuln/detail/CVE-2017-10912
https://nvd.nist.gov/vuln/detail/CVE-2017-10913
https://nvd.nist.gov/vuln/detail/CVE-2017-10914
https://nvd.nist.gov/vuln/detail/CVE-2017-10915
https://nvd.nist.gov/vuln/detail/CVE-2017-10917
https://nvd.nist.gov/vuln/detail/CVE-2017-10918
https://nvd.nist.gov/vuln/detail/CVE-2017-10920
https://nvd.nist.gov/vuln/detail/CVE-2017-10921
https://nvd.nist.gov/vuln/detail/CVE-2017-10922

References:

https://support.citrix.com/article/CTX224740

Severity
High
CVSS Score
10.0

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