CVE-2020-0705 in Windows
Summary
by MITRE
An information disclosure vulnerability exists when the Windows Network Driver Interface Specification (NDIS) improperly handles memory.To exploit this vulnerability, an attacker would first have to gain execution on the victim system, aka 'Windows Network Driver Interface Specification (NDIS) Information Disclosure Vulnerability'.
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Analysis
by VulDB Data Team • 03/29/2024
The vulnerability identified as CVE-2020-0705 represents a critical information disclosure flaw within the Windows Network Driver Interface Specification (NDIS) component that forms the foundation of network communications in Microsoft Windows operating systems. This weakness specifically manifests when NDIS fails to properly manage memory allocation and handling processes, creating potential avenues for unauthorized data exposure. The vulnerability is particularly concerning because it requires an attacker to first achieve code execution on the target system, which typically represents a significant escalation from initial compromise phases. However, once achieved, the flaw enables attackers to extract sensitive information from memory locations that should remain protected, potentially exposing system internals, credentials, or other confidential data.
The technical implementation of this vulnerability stems from improper memory management practices within the NDIS subsystem that handles network driver communications. When network drivers interact with the operating system through NDIS, they rely on specific memory structures and handling mechanisms that, under certain conditions, fail to properly validate or sanitize memory access patterns. This improper memory handling creates opportunities for information leakage where attackers can potentially read beyond allocated memory boundaries or access previously freed memory segments that contain sensitive data. The flaw operates at the kernel level where network driver components interface with core operating system functions, making it particularly dangerous as it can potentially expose system-level information that would normally be protected from user-mode access.
From an operational perspective, this vulnerability presents significant risks to enterprise environments where Windows systems form the backbone of network infrastructure. The requirement for initial execution on the victim system means that attackers must first overcome authentication barriers or exploit other vulnerabilities to gain a foothold before leveraging CVE-2020-0705. However, once the attacker has established execution privileges, the information disclosure capability can be leveraged to extract valuable intelligence including system configuration details, network topology information, or potentially credential material that could facilitate further lateral movement within the network. The vulnerability aligns with CWE-200, which specifically addresses "Information Exposure" and represents a classic example of how improper memory handling can lead to unintended data disclosure. Security professionals must consider this vulnerability within the broader context of the MITRE ATT&CK framework, particularly under the information gathering and credential access phases where such memory-based information disclosure techniques can provide attackers with critical intelligence for advanced persistent threats.
The impact of this vulnerability extends beyond simple data exposure as it can potentially enable attackers to construct more sophisticated attacks by understanding the underlying system architecture and memory layout. Network administrators should prioritize patch management for this vulnerability as Microsoft released security updates that address the memory handling issues within NDIS components. Organizations should implement comprehensive monitoring for suspicious network activity that might indicate exploitation attempts, particularly focusing on anomalous memory access patterns or unusual network driver behavior. The vulnerability underscores the importance of maintaining robust security practices around network driver management and kernel-level memory protection mechanisms. Given that NDIS serves as a critical interface between network hardware and operating system functionality, any compromise of its memory handling capabilities can potentially affect the entire network communication stack and expose the underlying system to further exploitation attempts.