PT-2021-20655 · Appdynamics · Appdynamics .Net Agent For Windows

Published 2021-08-18 · Updated 2021-08-26 · CVE-2021-34745

Positive Technologies (AI Summary)

CVSS v3.1

7.8

High

Base vector

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

Name of the Vulnerable Software and Affected Versions: AppDynamics .NET Agent for Windows versions prior to 21.7

Description: A vulnerability in the AppDynamics .NET Agent for Windows could allow an attacker to leverage an authenticated, local user account to gain SYSTEM privileges. This issue is due to the .NET Agent Coordinator Service executing code with SYSTEM privileges. An attacker with local access to a device running the vulnerable agent could create a custom process that would be launched with those SYSTEM privileges. A successful exploit could allow the attacker to execute arbitrary commands on the underlying operating system.

Recommendations: For versions prior to 21.7, update to AppDynamics .NET Agent Release 21.7 to resolve the issue. As a temporary workaround, consider restricting access to the .NET Agent Coordinator Service to minimize the risk of exploitation.

Fix

Improper Privilege Management

Weakness Enumeration

CWE-269

Related Identifiers

CVE-2021-34745

Affected Products

Appdynamics .Net Agent For Windows

References · 6

• https://nvd.nist.gov/vuln/detail/CVE-2021-34745 · Security Note
• https://docs.appdynamics.com/display/PAA/Security+Advisory%3A+AppDynamics+.NET+Agent+Privilege+Escalation+Vulnerability · Vendor Advisory
• https://osv.dev/vulnerability/CVE-2021-34745 · Vendor Advisory
• https://t.me/cvenotify/19683 · Telegram Post
• https://t.me/cvenotify/20132 · Telegram Post
• https://t.me/cibsecurity/27568 · Telegram Post