PT-2020-6864 · Citrix+1 · Citrix Virtual Apps/Desktops+1

Published 2020-11-10 · Updated 2020-12-03 · CVE-2020-8269

Positive Technologies (AI Summary)

CVSS v2.0

9.0

High

Base vector

AV:N/AC:L/Au:S/C:C/I:C/A:C

Name of the Vulnerable Software and Affected Versions Citrix Virtual Apps and Desktops (CVAD) versions prior to 2009 Citrix Virtual Apps and Desktops (CVAD) versions 1912 LTSR CU1 before hotfixes CTX285870 and CTX286120 Citrix Virtual Apps and Desktops (CVAD) versions 7.15 LTSR CU6 before hotfix CTX285344 Citrix Virtual Apps and Desktops (CVAD) versions 7.6 LTSR CU9

Description The issue is related to insufficient access control in the Virtual Delivery Agent (VDA) of Citrix Virtual Apps and Desktops (CVAD) when used in multi-session mode on Windows operating systems. This can allow a remote attacker to elevate privileges and execute arbitrary commands.

Recommendations For CVAD versions prior to 2009, apply the latest security updates to fix the issue. For CVAD versions 1912 LTSR CU1, apply hotfixes CTX285870 and CTX286120. For CVAD versions 7.15 LTSR CU6, apply hotfix CTX285344. For CVAD versions 7.6 LTSR CU9, update to a newer version that includes the security fix.

Fix

Improper Privilege Management

OS Command Injection

Weakness Enumeration

CWE-269

CWE-78

Related Identifiers

BDU:2023-02352

CVE-2020-8269

Affected Products

Citrix Virtual Apps/Desktops

Windows

References · 5

• https://support.citrix.com/article/CTX285059 · Vendor Advisory
• https://osv.dev/vulnerability/CVE-2020-8269 · Vendor Advisory
• https://nvd.nist.gov/vuln/detail/CVE-2020-8269 · Security Note
• https://bdu.fstec.ru/vul/2023-02352 · Security Note
• https://support.citrix.com/article/CTX285059/citrix-virtual-apps-and-desktops-security-update · Note