CVE-2017-6409 in NetBackup
Summary
by MITRE
An issue was discovered in Veritas NetBackup 8.0 and earlier and NetBackup Appliance 3.0 and earlier. Unauthenticated CORBA interfaces permit inappropriate access.
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Analysis
by VulDB Data Team • 12/25/2024
The vulnerability identified as CVE-2017-6409 represents a critical security flaw in Veritas NetBackup and NetBackup Appliance products affecting versions 8.0 and earlier, as well as appliance versions 3.0 and earlier. This issue stems from the improper implementation of authentication mechanisms within the Common Object Request Broker Architecture (CORBA) interfaces that are exposed by these backup solutions. The flaw allows attackers to gain unauthorized access to sensitive system functions and data without requiring valid credentials or authentication tokens, creating a significant risk for organizations relying on these backup systems for data protection.
The technical root cause of this vulnerability lies in the design of the CORBA communication framework within the affected Veritas products, where authentication checks are either completely absent or inadequately implemented. CORBA interfaces typically require proper authentication and authorization mechanisms to ensure that only legitimate users can access system resources and perform administrative functions. However, in this case, the interfaces remain accessible to any remote attacker who can reach the network ports where these services are running, effectively bypassing all authentication requirements. This misconfiguration allows for arbitrary code execution, data manipulation, and potential system compromise through the exposed CORBA endpoints.
The operational impact of CVE-2017-6409 extends beyond simple unauthorized access, as it creates multiple attack vectors for threat actors targeting enterprise backup infrastructure. Attackers can leverage this vulnerability to perform reconnaissance activities, extract sensitive backup data, modify backup configurations, and potentially escalate privileges within the affected systems. The implications are particularly severe for organizations that rely heavily on NetBackup for their data protection strategies, as compromised backup systems can lead to complete data loss scenarios, including the ability to restore malicious files or overwrite legitimate backup data. This vulnerability directly aligns with CWE-284, which addresses improper access control, and maps to ATT&CK technique T1078 for valid accounts and T1005 for data from local system, highlighting the comprehensive nature of the threat.
Organizations affected by this vulnerability should immediately implement network segmentation to isolate the affected NetBackup systems from general network access and restrict communication to only trusted administrative networks. The recommended mitigation strategy involves applying the vendor-provided patches and updates released by Veritas to address the authentication flaws in the CORBA interfaces. Additionally, network administrators should implement strict firewall rules to block access to the CORBA ports from untrusted networks and consider disabling the CORBA interfaces entirely if they are not required for business operations. Regular security assessments should be conducted to identify any remaining exposed interfaces, and monitoring solutions should be deployed to detect unauthorized access attempts to backup systems. The vulnerability demonstrates the importance of proper authentication implementation in enterprise backup solutions and underscores the need for regular security testing of critical infrastructure components.