Citrix XenDesktop 5.6 Virtual Desktop Agent security check

CVSS Meta Temp Score
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CTI Interest Score
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3.9$0-$5k0.00

A vulnerability was found in Citrix XenDesktop 5.6 (Connectivity Software). It has been declared as problematic. This vulnerability affects an unknown functionality of the component Virtual Desktop Agent. The manipulation with an unknown input leads to a security check vulnerability. The CWE definition for the vulnerability is CWE-358. The product does not implement or incorrectly implements one or more security-relevant checks as specified by the design of a standardized algorithm, protocol, or technique. As an impact it is known to affect confidentiality, and integrity. CVE summarizes:

Citrix XenDesktop Virtual Desktop Agent (VDA) 5.6.x before 5.6.200, when making changes to the server-side policy that control USB redirection, does not propagate changes to the VDA, which allows authenticated users to retain access to the USB device.

The weakness was disclosed 12/11/2012 by Agent as CTX135813 as confirmed advisory (Website). The advisory is available at support.citrix.com. The public release has been coordinated in cooperation with the vendor. This vulnerability was named CVE-2012-6314 since 12/06/2012. Local access is required to approach this attack. The successful exploitation needs a single authentication. The technical details are unknown and an exploit is not available. This vulnerability is assigned to T1211 by the MITRE ATT&CK project.

The vulnerability scanner Nessus provides a plugin with the ID 63325 (Citrix XenDesktop Virtual Desktop Agent USB Redirection Propagation Handling Access Restriction Bypass (CTX135813)), which helps to determine the existence of the flaw in a target environment. It is assigned to the family Windows.

Upgrading to version 5.6.200 eliminates this vulnerability. A possible mitigation has been published immediately after the disclosure of the vulnerability.

The vulnerability is also documented in the databases at X-Force (80626) and Tenable (63325).

Productinfo

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CPE 2.3info

CPE 2.2info

CVSSv4info

VulDB CVSS-B Score: 🔍
VulDB CVSS-BT Score: 🔍
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CVSSv3info

VulDB Meta Base Score: 4.4
VulDB Meta Temp Score: 3.9

VulDB Base Score: 4.4
VulDB Temp Score: 3.9
VulDB Vector: 🔍
VulDB Reliability: 🔍

CVSSv2info

AVACAuCIA
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VectorComplexityAuthenticationConfidentialityIntegrityAvailability
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VulDB Base Score: 🔍
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NVD Base Score: 🔍

Exploitinginfo

Class: Security check
CWE: CWE-358
ATT&CK: T1211

Local: Yes
Remote: No

Availability: 🔍
Status: Unproven

EPSS Score: 🔍
EPSS Percentile: 🔍

Price Prediction: 🔍
Current Price Estimation: 🔍

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Nessus ID: 63325
Nessus Name: Citrix XenDesktop Virtual Desktop Agent USB Redirection Propagation Handling Access Restriction Bypass (CTX135813)
Nessus File: 🔍
Nessus Risk: 🔍
Nessus Family: 🔍

Threat Intelligenceinfo

Interest: 🔍
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Active APT Groups: 🔍

Countermeasuresinfo

Recommended: Upgrade
Status: 🔍

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

Upgrade: XenDesktop 5.6.200

Timelineinfo

12/06/2012 🔍
12/11/2012 +5 days 🔍
12/11/2012 +0 days 🔍
12/11/2012 +0 days 🔍
12/11/2012 +0 days 🔍
12/12/2012 +1 days 🔍
12/12/2012 +0 days 🔍
12/17/2012 +5 days 🔍
12/21/2012 +4 days 🔍
12/26/2012 +5 days 🔍
01/03/2013 +8 days 🔍
04/20/2021 +3029 days 🔍

Sourcesinfo

Vendor: citrix.com

Advisory: CTX135813
Researcher: Agent
Status: Confirmed
Confirmation: 🔍
Coordinated: 🔍

CVE: CVE-2012-6314 (🔍)
X-Force: 80626 - Citrix XenDesktop Virtual Desktop Agent security bypass, Medium Risk
SecurityTracker: 1027869 - Citrix XenDesktop Lets Remote Authenticated Users Bypass USB Redirection Policies
Vulnerability Center: 37898 - Citrix XenDesktop Virtual Desktop Agent (VDA) 5.6.x Before 5.6.200 Remote Access to USB Bypass, Low
SecurityFocus: 56908 - Citrix XenDesktop Virtual Desktop Agent Local Security Bypass Vulnerability
Secunia: 51524 - Citrix XenDesktop USB Redirection Policy Security Issue, Not Critical
OSVDB: 88369

Entryinfo

Created: 12/17/2012 09:10
Updated: 04/20/2021 10:53
Changes: 12/17/2012 09:10 (80), 04/23/2017 13:57 (5), 04/20/2021 10:53 (3)
Complete: 🔍

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