Citrix XenServer Multiple Security Updates (CTX223291)

Published: 2017-06-28 03:07:10
CVE Author: NIST National Vulnerability Database

CVSS Base Vector:
AV:L/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. The most significant of these issues could, if exploited, allow a malicious administrator of a 64-bit PV guest VM to compromise the host. This issue has the identifier: - CVE-2017-7228 (High): x86: broken check in memory_exchange() permits PV guest breakout In addition, an issue has been identified that, in certain deployments, allows a guest VM to perform a denial of service attack against the host by repeatedly rebooting many times. - (Low): memory leak when destroying guest without PT devices A further issue has been identified that, in certain deployments, might allow unprivileged code within a guest to escalate its privilege level within that same guest. This issue has the identifier: - CVE-2016-10013 (Low): x86: Mishandling of SYSCALL singlestep during emulation

Detection Method:
Check the installed hotfixes.

Affected Versions:
XenServer versions 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-2017-7228
https://nvd.nist.gov/vuln/detail/CVE-2016-10013

CVE Analysis

https://www.mageni.net/cve/CVE-2017-7228
https://www.mageni.net/cve/CVE-2016-10013

References:

https://support.citrix.com/article/CTX223291

Severity
High
CVSS Score
7.2
Published
2017-06-28
Modified
2018-10-19
Category
Citrix Xenserver Local Security Checks

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