VulnerabilityModified

CVE-2021-34745

A vulnerability in the AppDynamics .NET Agent for Windows could allow an attacker to leverage an authenticated, local user account to gain SYSTEM privileges.

HIGH 7.8EPSS 0.23%

Does this matter?

High impact if exploited, but EPSS currently rates exploitation as unlikely (0.23%). Schedule it in the normal patch cycle and watch for a rise in EPSS or a public exploit.

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 vulnerability is due to the .NET Agent Coordinator Service executing code with SYSTEM privileges. An attacker with local access to a device that is 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. This vulnerability is fixed in AppDynamics .NET Agent Release 21.7.

CVSS 3.1: 7.8 HIGHCVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
EPSS: 0.23% probability · 14th percentile
CISA KEV: Not listed
Weakness: CWE-269
Affected: cisco/appdynamics .net agent
Source: psirt@cisco.com

References

https://docs.appdynamics.com/display/PAA/Security+Advisory%3A+AppDynamics+.NET+Agent+Privilege+Escalation+VulnerabilityPatch, Vendor Advisory
https://docs.appdynamics.com/display/PAA/Security+Advisory%3A+AppDynamics+.NET+Agent+Privilege+Escalation+VulnerabilityPatch, Vendor Advisory

Source: NVD record, EPSS from FIRST.org, KEV from CISA. Refreshed daily.