Citrix XenServer 6.0.2/6.2.0/6.5/7.0 Host Database access control

CVSS Meta Temp Score
CVSS is a standardized scoring system to determine possibilities of attacks. The Temp Score considers temporal factors like disclosure, exploit and countermeasures. The unique Meta Score calculates the average score of different sources to provide a normalized scoring system.
Current Exploit Price (≈)
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CTI Interest Score
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A vulnerability classified as problematic was found in Citrix XenServer 6.0.2/6.2.0/6.5/7.0 (Virtualization Software). This vulnerability affects an unknown function of the component Host Database. The manipulation with an unknown input leads to a privilege escalation vulnerability. The CWE definition for the vulnerability is CWE-264. As an impact it is known to affect integrity, and availability.

The bug was discovered 01/25/2017. The weakness was published 01/25/2017 with Citrix Systems as CTX220112 as confirmed security bulletin (Website). The advisory is shared for download at This vulnerability was named CVE-2017-5572 since 01/23/2017. The attack can be initiated remotely. The successful exploitation requires a single authentication. There are neither technical details nor an exploit publicly available. The MITRE ATT&CK project declares the attack technique as T1068. The advisory points out:

Several security issues have been identified within Citrix XenServer. These issues could, if exploited, allow an authenticated administrator to perform a denial-of-service attack against the host, even when that administrator has a less-privileged RBAC role (e.g. read-only).

The vulnerability scanner Nessus provides a plugin with the ID 96928 (Citrix XenServer Multiple Vulnerabilities (CTX220112)), which helps to determine the existence of the flaw in a target environment. It is assigned to the family Misc. and running in the context local.

Applying the patch CTX220079/CTX220080/CTX220081 is able to eliminate this problem. A possible mitigation has been published immediately after the disclosure of the vulnerability.

The vulnerability is also documented in the databases at SecurityFocus (BID 95801), SecurityTracker (ID 1037716) and Tenable (96928). Similar entries are available at 78855 and 96041.





CPE 2.3infoedit

CPE 2.2infoedit


VulDB Meta Base Score: 5.9
VulDB Meta Temp Score: 5.7

VulDB Base Score: 5.4
VulDB Temp Score: 5.2
VulDB Vector: 🔍
VulDB Reliability: 🔍

NVD Base Score: 6.5
NVD Vector: 🔍



VulDB Base Score: 🔍
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Class: Privilege escalation
CWE: CWE-264
ATT&CK: T1068

Local: No
Remote: Yes

Availability: 🔍
Status: Not defined

Price Prediction: 🔍
Current Price Estimation: 🔍


Nessus ID: 96928
Nessus Name: Citrix XenServer Multiple Vulnerabilities (CTX220112)
Nessus File: 🔍
Nessus Risk: 🔍
Nessus Family: 🔍
Nessus Context: 🔍

OpenVAS ID: 803000
OpenVAS Name: Citrix XenServer CVE-2017-5572 Denial of Service Vulnerability
OpenVAS File: 🔍
OpenVAS Family: 🔍

Threat Intelligenceinfoedit

Threat: 🔍
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Recommended: Patch
Status: 🔍

Reaction Time: 🔍
0-Day Time: 🔍
Exposure Time: 🔍

Patch: CTX220079/CTX220080/CTX220081


01/23/2017 🔍
01/25/2017 +2 days 🔍
01/25/2017 +0 days 🔍
01/25/2017 +0 days 🔍
01/25/2017 +0 days 🔍
01/26/2017 +1 days 🔍
01/27/2017 +1 days 🔍
01/30/2017 +3 days 🔍
02/01/2017 +2 days 🔍
08/03/2020 +1279 days 🔍



Advisory: CTX220112
Organization: Citrix Systems
Status: Confirmed
Confirmation: 🔍

CVE: CVE-2017-5572 (🔍)
SecurityFocus: 95801 - Citrix XenServer CVE-2017-5572 Denial of Service Vulnerability
SecurityTracker: 1037716
OSVDB: - CVE-2017-5572 - Citrix - XenServer - Memory Corruption Issue

See also: 🔍


Created: 01/27/2017 12:18 PM
Updated: 08/03/2020 08:25 AM
Changes: (7) vulnerability_discoverydate advisory_company_name advisory_confirm_url source_cve_assigned source_osvdb_title source_securityfocus_date source_securityfocus_class
Complete: 🔍


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