Critical Vulnerability in Citrix UberAgent Enables Privilege Escalation

Cyber Attack

A critical vulnerability has been identified in Citrix’s uberAgent, a sophisticated monitoring tool used to optimize performance and security across Citrix platforms. Tracked under CVE-2024-3902, this flaw allows attackers to escalate privileges within the system, presenting a serious risk to organizations using affected versions of the software.

The vulnerability specifically impacts Citrix uberAgent versions before 7.1.2, particularly in configurations involving specific CitrixADC metrics and a PowerShell-based WmiProvider. Attackers with network access can exploit this flaw to manipulate uberAgent’s data collection capabilities and execute commands with elevated privileges.

Affected Configurations

  • Citrix uberAgent versions before 7.1.2
  • Configurations with specific CitrixADC metrics:
    • CitrixADCPerformance
    • CitrixADCvServer
    • CitrixADCGateways
    • CitrixADCInventory
  • For versions 7.0 to 7.1.1, a PowerShell-based WmiProvider must be set with at least one CitrixSession metric configured.


Mitigation Strategies

Citrix has issued an urgent advisory recommending immediate updates to version 7.1.2 or later for customers using affected uberAgent versions. For organizations unable to upgrade immediately, interim mitigation steps include:

  • Disabling CitrixADC metrics by removing specific timer properties.
  • Changing the WmiProvider setting from PowerShell to WMIC or ensuring it is not configured.


These steps are crucial to reducing the risk posed by this vulnerability until a secure version of the software can be implemented.

The discovery of this vulnerability underscores the complex challenges organizations face in securing IT environments. While uberAgent is valued for its detailed analytics and monitoring capabilities, incidents like this highlight potential risks associated with even trusted security tools.


Citrix’s Response

Citrix has promptly addressed the CVE-2024-3902 vulnerability by releasing updated software and actively assisting customers with implementing necessary updates. The company acknowledges the security researchers whose efforts identified this issue, emphasizing the importance of collaborative security initiatives.

Organizations are strongly advised to review their uberAgent configurations and promptly apply updates or mitigation measures to safeguard their IT infrastructure from potential exploitation.