CVE-2017-14385 in Data Domain DD OS
Summary
by MITRE
An issue was discovered in EMC Data Domain DD OS 5.7 family, versions prior to 5.7.5.6; EMC Data Domain DD OS 6.0 family, versions prior to 6.0.2.9; EMC Data Domain DD OS 6.1 family, versions prior to 6.1.0.21; EMC Data Domain Virtual Edition 2.0 family, all versions; EMC Data Domain Virtual Edition 3.0 family, versions prior to 3.0 SP2 Update 1; and EMC Data Domain Virtual Edition 3.1 family, versions prior to 3.1 Update 2. EMC Data Domain DD OS contains a memory overflow vulnerability in SMBv1 which may potentially be exploited by an unauthenticated remote attacker. An attacker may completely shut down both the SMB service and active directory authentication. This may also allow remote code injection and execution.
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Analysis
by VulDB Data Team • 12/17/2019
The vulnerability identified as CVE-2017-14385 represents a critical memory overflow flaw within the SMBv1 implementation of EMC Data Domain operating systems across multiple versions and virtual editions. This issue affects a wide range of EMC Data Domain systems including the DD OS 5.7 family, DD OS 6.0 family, DD OS 6.1 family, and various virtual editions spanning from version 2.0 through 3.1. The vulnerability specifically resides in the Server Message Block version 1 protocol implementation, which is a legacy networking protocol used for file sharing and network communication. The flaw manifests as a buffer overflow condition that can be triggered remotely without requiring authentication credentials, making it particularly dangerous for networked environments where such systems are exposed to external networks.
The technical nature of this vulnerability places it squarely within CWE-121, which describes "Stack-based Buffer Overflow" conditions that occur when more data is written to a buffer than it can hold. The memory overflow in the SMBv1 implementation allows an attacker to overwrite adjacent memory locations, potentially leading to arbitrary code execution and complete system compromise. The attack vector is particularly concerning because it operates over the network without requiring authentication, enabling unauthenticated remote exploitation. This characteristic aligns with ATT&CK technique T1190, which covers "Exploit Public-Facing Application" where attackers target vulnerabilities in externally accessible services.
The operational impact of this vulnerability extends beyond simple service disruption to encompass complete system compromise and potential data exfiltration. When exploited, the vulnerability can completely shut down both the SMB service and active directory authentication mechanisms, effectively removing the system's ability to authenticate users or provide file sharing services. This disruption can cascade into broader network availability issues, particularly in environments where Data Domain systems serve as critical backup and storage infrastructure. The potential for remote code execution means that attackers could gain full control over affected systems, potentially leading to persistent backdoors, data manipulation, or use of compromised systems as launching points for further attacks within the network infrastructure.
Organizations affected by this vulnerability should prioritize immediate remediation through official EMC patches and updates, particularly focusing on upgrading to the minimum recommended versions that address the specific memory overflow conditions. System administrators should implement network segmentation to limit exposure of Data Domain systems to untrusted networks, and consider disabling SMBv1 protocols where possible, as this legacy protocol presents multiple security risks beyond this specific vulnerability. Monitoring for anomalous network traffic patterns and authentication failures should be implemented to detect potential exploitation attempts. The vulnerability's classification as a remote code execution flaw with no authentication requirements necessitates immediate action, as it represents a high-impact threat that could enable attackers to establish persistent access to critical backup and storage infrastructure.