CVE-2022-37016: Symantec Endpoint Protection Escalation

CVE-2022-37016 Overview

CVE-2022-37016 is a critical Privilege Escalation vulnerability affecting the Symantec Endpoint Protection (SEP) Windows agent. This vulnerability allows an attacker to potentially compromise the security software application to gain elevated access to resources that are normally protected from standard applications or users. Given that endpoint protection software operates with high system privileges, successful exploitation could grant attackers complete control over affected Windows systems.

Critical Impact

Attackers exploiting this vulnerability can elevate privileges to gain unauthorized access to protected system resources, potentially compromising the entire security posture of affected endpoints.

Affected Products

• Broadcom Symantec Endpoint Protection (Windows)
• Symantec Endpoint Protection Windows Agent (all versions prior to patched release)

Discovery Timeline

• 2022-12-01 - CVE-2022-37016 published to NVD
• 2025-04-24 - Last updated in NVD database

Technical Details for CVE-2022-37016

Vulnerability Analysis

This Privilege Escalation vulnerability exists within the Symantec Endpoint Protection Windows agent. The vulnerability enables attackers to exploit weaknesses in the security software to gain elevated privileges on the target system. Because endpoint protection software inherently requires elevated permissions to perform system-level security operations, a successful privilege escalation in this context is particularly dangerous—it can undermine the very security controls designed to protect the system.

The network-based attack vector means that exploitation can potentially be initiated remotely without requiring prior authentication or user interaction, significantly increasing the risk profile. This allows attackers to target vulnerable systems across a network rather than requiring local access.

Root Cause

The specific technical root cause has not been fully disclosed by the vendor. However, the vulnerability classification indicates an issue within the SEP Windows agent that fails to properly restrict privilege boundaries, allowing unauthorized elevation of access rights. This type of vulnerability typically stems from improper access control mechanisms, insecure service configurations, or flawed permission handling within privileged components of the security software.

Attack Vector

The vulnerability is exploitable over the network with low attack complexity. An attacker does not require any privileges or user interaction to exploit this vulnerability. Successful exploitation results in high impact to confidentiality, integrity, and availability of the affected system.

The attack scenario involves an adversary targeting the Symantec Endpoint Protection agent service or associated components to bypass security boundaries and execute operations with elevated system privileges. Given the software's role as endpoint security, compromising it could allow attackers to disable security controls, access sensitive data, or establish persistent access to the compromised system.

Detection Methods for CVE-2022-37016

Indicators of Compromise

• Unexpected privilege changes or new administrative accounts on systems running Symantec Endpoint Protection
• Anomalous network connections to or from SEP agent processes
• Unusual process spawning behavior from SEP-related services with elevated privileges
• Modifications to SEP configuration files or registry entries outside of normal administrative operations

Detection Strategies

• Monitor Windows Event Logs for privilege escalation attempts, particularly events related to service account modifications (Event IDs 4672, 4673, 4674)
• Implement endpoint detection rules to identify abnormal behavior from ccSvcHst.exe and other SEP agent processes
• Deploy network monitoring to detect unusual traffic patterns involving SEP management ports and services
• Utilize behavioral analytics to identify deviations from baseline SEP agent behavior

Monitoring Recommendations

• Enable detailed logging for Symantec Endpoint Protection services and monitor for configuration changes
• Implement SIEM correlation rules to detect potential exploitation attempts across the network
• Configure alerts for unauthorized attempts to modify SEP agent files or services
• Regularly audit system privileges on endpoints running the vulnerable software

How to Mitigate CVE-2022-37016

Immediate Actions Required

• Apply the security patch from Broadcom immediately to all affected Symantec Endpoint Protection Windows installations
• Review systems running SEP for signs of compromise before and after patching
• Implement network segmentation to limit exposure of vulnerable SEP agents until patches are applied
• Ensure SEP management communications are properly secured and monitored

Patch Information

Broadcom has released a security advisory addressing this vulnerability. Administrators should consult the Broadcom Security Advisory #21014 for specific patch information, affected version details, and upgrade instructions. It is critical to update all Symantec Endpoint Protection Windows agents to the latest patched version as soon as possible.

Workarounds

• Restrict network access to SEP management interfaces using firewall rules until patches can be applied
• Implement additional monitoring and alerting on systems running vulnerable SEP versions
• Consider deploying additional endpoint security controls to detect exploitation attempts
• Limit administrative access to SEP management consoles to reduce attack surface

Organizations should prioritize patching this vulnerability given its critical severity and the potential for remote exploitation without authentication. The security advisory from Broadcom provides the definitive guidance for remediation.