Detections
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Citrix XenServer Active Directory Authentication Incorrect Host Management Security Bypass (CTX213549, CTX213769)

critical Nessus Plugin ID 91885

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Synopsis

The remote host is affected by a security bypass vulnerability.

Description

The version of Citrix XenServer running on the remote host is 7.x prior to 7.0 hotfix XS70E003. It is, therefore, affected by a security bypass vulnerability due to incorrect handling of Active Directory (AD) credentials. An unauthenticated, remote attacker on the management network with AD credentials for an AD account can exploit this to compromise the XenServer host even if the credentials do not have authorization.

Solution

Apply hotfix XS70E003 as referenced in the vendor advisory.

See Also

https://support.citrix.com/article/CTX213549

https://support.citrix.com/article/CTX213769

Plugin Details

Severity: Critical

ID: 91885

File Name: citrix_xenserver_CTX213549.nasl

Version: 1.5

Type: local

Family: Misc.

Published: 6/28/2016

Updated: 11/14/2019

Configuration: Enable paranoid mode

Supported Sensors: Nessus

Risk Information

VPR

Risk Factor: Medium

Score: 5.9

CVSS v2

Risk Factor: High

Base Score: 7.5

Temporal Score: 5.5

Vector: CVSS2#AV:N/AC:L/Au:N/C:P/I:P/A:P

CVSS v3

Risk Factor: Critical

Base Score: 9.8

Temporal Score: 8.5

Vector: CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H

Temporal Vector: CVSS:3.0/E:U/RL:O/RC:C

Vulnerability Information

CPE: cpe:/a:citrix:xenserver

Required KB Items: Settings/ParanoidReport, Host/XenServer/version, Host/local_checks_enabled

Exploit Ease: No known exploits are available

Patch Publication Date: 6/9/2016

Vulnerability Publication Date: 6/9/2016

Reference Information

CVE: CVE-2016-5302