Detections
Analytics

Citrix Virtual Apps and Desktops multiple vulnerabilities (CTX285059)

high Nessus Plugin ID 150791

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Synopsis

An application installed on the remote Windows host is affected by multiple vulnerabilities.

Description

The version of Citrix Virtual Apps and Desktops installed on the remote Windows host is prior to 7 2006 or prior to 1912 LTSR CU1. It is, therefore, affected by multiple vulnerabilities:

 - An authenticated user on a multi-session VDA can perform arbitrary command execution as SYSTEM. (CVE-2020-8269)

 - An unprivileged Windows user on a VDA with Citrix App-V Service installed OR an SMB user who has connected to a VDA with Citrix App-V Service installed can perform arbitrary command execution as SYSTEM. (CVE-2020-8270)

 - An authenticated user on a Windows host that is running Universal Print Server (UPS) can perform arbitrary command execution as SYSTEM (CVE-2020-8283)

Note that Nessus has not tested for this issue but has instead relied only on the application's self-reported version number.

Solution

Refer to vendor advisory.

See Also

https://support.citrix.com/article/CTX285059

Plugin Details

Severity: High

ID: 150791

File Name: citrix_vda_ctx285059.nasl

Version: 1.7

Type: local

Agent: windows

Family: Windows

Published: 6/15/2021

Updated: 12/13/2023

Configuration: Enable thorough checks

Supported Sensors: Nessus Agent, Nessus

Risk Information

VPR

Risk Factor: Medium

Score: 5.9

CVSS v2

Risk Factor: High

Base Score: 9

Temporal Score: 6.7

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

CVSS Score Source: CVE-2020-8283

CVSS v3

Risk Factor: High

Base Score: 8.8

Temporal Score: 7.7

Vector: CVSS:3.0/AV:N/AC:L/PR:L/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:virtual_apps_and_desktops

Required KB Items: installed_sw/Citrix Virtual Apps and Desktops

Exploit Ease: No known exploits are available

Patch Publication Date: 11/15/2020

Vulnerability Publication Date: 11/15/2020

Reference Information

CVE: CVE-2020-8269, CVE-2020-8270, CVE-2020-8283

IAVA: 2020-A-0523-S