CVE-2024-11616 is a medium severity security vulnerability identified in Netskope Inc.'s Endpoint Data Loss Prevention (DLP) product, specifically affecting versions below R119. The vulnerability is classified as a CWE-125 Out-of-bounds Read due to a double-fetch issue within the EpdlpSetUsbAction function of the Content Control Driver component. The root cause lies in the handling of user-supplied input where the NumberOfBytes argument to the memory allocation function ExAllocatePoolWithTag and the Length argument to the memory copy function RtlCopyMemory are both independently dereferenced from the same input buffer. This creates a race condition where the length value can be changed between the two calls, potentially causing RtlCopyMemory to copy more data than the allocated buffer size, resulting in a heap overflow. Exploitation requires administrative privileges, which limits the attack surface to users or processes with elevated rights. There is no indication of user interaction being necessary, and no known exploits are currently reported in the wild. The vulnerability has a CVSS 4.0 base score of 5.6, reflecting a medium severity level due to the requirement for high complexity (high attack complexity), privileged access, and no user interaction. The heap overflow could lead to memory corruption, potentially allowing an attacker to execute arbitrary code or cause denial of service on affected systems running vulnerable versions of Netskope Endpoint DLP.

For European organizations using Netskope Endpoint DLP versions below R119, this vulnerability poses a risk primarily to systems where administrative privileges are accessible to potentially malicious insiders or compromised accounts. The heap overflow could be leveraged to execute arbitrary code or disrupt endpoint security controls, undermining data loss prevention efforts and exposing sensitive data. Given that Endpoint DLP is typically deployed in enterprise environments to monitor and control data exfiltration, exploitation could lead to confidentiality breaches, integrity violations, and availability issues of critical security infrastructure. This is particularly concerning for sectors with stringent data protection requirements such as finance, healthcare, and government agencies within Europe. The requirement for administrative privileges reduces the likelihood of remote exploitation but does not eliminate risk from insider threats or lateral movement within compromised networks. The absence of known exploits suggests limited active threat but does not preclude future targeted attacks.

European organizations should prioritize upgrading Netskope Endpoint DLP to version R119 or later, where this vulnerability is addressed. Until patching is possible, organizations should enforce strict administrative access controls, including the principle of least privilege and robust monitoring of privileged accounts to detect anomalous activities. Implementing endpoint detection and response (EDR) solutions can help identify exploitation attempts involving memory corruption. Additionally, organizations should audit and restrict the use of administrative privileges on endpoints running Netskope Endpoint DLP, and consider network segmentation to limit lateral movement. Regularly reviewing and updating security policies related to endpoint protection and USB device control can further reduce exposure. Since the vulnerability involves USB action handling, disabling or tightly controlling USB device usage on critical systems may mitigate exploitation risk. Finally, maintaining up-to-date threat intelligence and vendor advisories will help organizations respond promptly to any emerging exploit developments.