CVE-2024-8068: Citrix Session Recording Privilege Escalation

CVE-2024-8068 Overview

CVE-2024-8068 is a privilege escalation vulnerability affecting Citrix Session Recording that allows an authenticated user within the same Windows Active Directory domain as the session recording server to escalate privileges to NetworkService Account access. This vulnerability poses a significant risk to organizations using Citrix Session Recording for compliance and monitoring purposes.

Critical Impact

This vulnerability is listed in the CISA Known Exploited Vulnerabilities (KEV) catalog, indicating active exploitation in the wild. Authenticated domain users can escalate privileges to gain NetworkService Account access, potentially compromising session recording infrastructure and accessing sensitive recorded data.

Affected Products

• Citrix Session Recording versions prior to current release (Current Release track)
• Citrix Session Recording 1912 LTSR through CU8
• Citrix Session Recording 2203 LTSR through CU5
• Citrix Session Recording 2402 LTSR
• Citrix Session Recording 2407

Discovery Timeline

• November 12, 2024 - CVE-2024-8068 published to NVD
• October 24, 2025 - Last updated in NVD database

Technical Details for CVE-2024-8068

Vulnerability Analysis

This privilege escalation vulnerability (CWE-269: Improper Privilege Management) exists within the Citrix Session Recording component. The flaw allows an attacker who is already authenticated within the same Windows Active Directory domain as the session recording server to escalate their privileges to NetworkService Account level access.

The NetworkService Account is a built-in Windows account with limited privileges on the local system but can authenticate to other machines on the network using the computer account credentials. Gaining access to this account allows attackers to potentially access network resources, manipulate session recordings, or use the compromised server as a pivot point for further attacks within the domain.

The attack requires adjacent network access and low-privilege authentication within the domain, making it particularly dangerous in enterprise environments where users have legitimate domain credentials but should not have elevated access to session recording infrastructure.

Root Cause

The vulnerability stems from improper privilege management (CWE-269) within the Citrix Session Recording application. The software fails to properly enforce privilege boundaries, allowing authenticated domain users to perform operations that should be restricted to higher-privileged accounts. This improper access control enables the escalation to NetworkService Account privileges.

Attack Vector

The attack vector requires adjacent network access, meaning the attacker must be on the same network segment or have network adjacency to the target Session Recording server. The attack prerequisites include:

1. Valid authentication within the same Windows Active Directory domain as the session recording server
2. Network access to the session recording server
3. Ability to interact with the vulnerable Session Recording components

The attacker leverages their existing domain credentials to exploit the privilege management flaw, ultimately gaining NetworkService Account access on the target server. This access can then be used to access recorded session data, tamper with recordings, or establish persistence within the environment.

Detection Methods for CVE-2024-8068

Indicators of Compromise

• Unusual authentication attempts to the Session Recording server from unexpected domain accounts
• Evidence of privilege escalation events in Windows Security logs related to NetworkService Account
• Unexpected processes or services running under the NetworkService Account context
• Anomalous access patterns to session recording storage locations

Detection Strategies

• Monitor Windows Security Event Logs for Event ID 4672 (Special privileges assigned to new logon) targeting the Session Recording server
• Implement alerting on unexpected authentication events to Session Recording infrastructure
• Deploy endpoint detection solutions to identify privilege escalation behaviors on Session Recording servers
• Review Citrix Session Recording logs for unauthorized access attempts or configuration changes

Monitoring Recommendations

• Enable comprehensive auditing on Session Recording servers including process creation and privilege use
• Configure SIEM rules to correlate domain authentication events with Session Recording server access
• Implement User and Entity Behavior Analytics (UEBA) to detect anomalous privilege usage patterns
• Monitor network traffic to Session Recording servers for unusual connection patterns from domain workstations

How to Mitigate CVE-2024-8068

Immediate Actions Required

• Apply the security patches referenced in Citrix Security Bulletin CTX691941 immediately
• Review Session Recording server access logs for evidence of exploitation
• Implement network segmentation to restrict access to Session Recording servers
• Audit domain user accounts that have accessed Session Recording infrastructure

Patch Information

Citrix has released security updates to address this vulnerability. Organizations should consult the Citrix Security Bulletin CTX691941 for specific patch versions and update instructions.

For affected LTSR versions:

• 1912 LTSR: Update beyond CU8 as per Citrix guidance
• 2203 LTSR: Update beyond CU5 as per Citrix guidance
• 2402 LTSR and 2407: Apply latest security updates

Workarounds

• Restrict network access to Session Recording servers using firewall rules to limit connections to authorized administrative systems only
• Implement additional network segmentation between domain users and Session Recording infrastructure
• Enable enhanced monitoring and logging on Session Recording servers pending patch deployment
• Consider temporarily disabling Session Recording functionality in high-risk environments until patches can be applied

# Example: Windows Firewall rule to restrict Session Recording server access
# Run on Session Recording server to limit inbound connections
netsh advfirewall firewall add rule name="Restrict Session Recording Access" dir=in action=allow remoteip=<AUTHORIZED_ADMIN_IP_RANGE> protocol=tcp localport=<SESSION_RECORDING_PORTS>
netsh advfirewall firewall add rule name="Block Unauthorized Session Recording Access" dir=in action=block protocol=tcp localport=<SESSION_RECORDING_PORTS>