CVE-2005-3116 in NetBackup
Summary
by MITRE
Stack-based buffer overflow in a shared library as used by the Volume Manager daemon (vmd) in VERITAS NetBackup Enterprise Server 5.0 MP1 to MP5 and 5.1 up to MP3A allows remote attackers to execute arbitrary code via a crafted packet.
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Analysis
by VulDB Data Team • 06/29/2025
The vulnerability identified as CVE-2005-3116 represents a critical stack-based buffer overflow flaw within the VERITAS NetBackup Enterprise Server's Volume Manager daemon component. This security weakness exists in the shared library implementation that handles network communications, specifically affecting versions 5.0 through 5.1 with multiple maintenance packs. The flaw manifests when the vmd daemon processes incoming network packets, creating an exploitable condition that can be leveraged by remote attackers to gain unauthorized code execution privileges on affected systems.
The technical implementation of this vulnerability stems from improper input validation within the network packet processing routines of the Volume Manager daemon. When the vmd service receives a specially crafted network packet, it fails to properly bounds-check the incoming data before copying it into a fixed-size stack buffer. This classic buffer overflow condition allows an attacker to overwrite adjacent memory locations including return addresses and control data, potentially enabling arbitrary code execution. The vulnerability specifically affects the shared library components that handle volume management operations, making it particularly dangerous in enterprise backup environments where the NetBackup service typically runs with elevated privileges.
The operational impact of this vulnerability extends beyond simple code execution, as it represents a significant threat to enterprise backup infrastructure security. Remote attackers who successfully exploit this vulnerability can gain complete control over the affected NetBackup server, potentially compromising backup data integrity, accessing sensitive information stored in backup repositories, and using the compromised system as a launching point for further attacks within the network infrastructure. The attack vector requires only network connectivity to the affected service, making it particularly dangerous as it can be exploited from external networks without requiring physical access or prior authentication.
The exploitation of this vulnerability aligns with several tactics described in the ATT&CK framework, particularly those related to remote code execution and privilege escalation. The flaw demonstrates characteristics consistent with CWE-121 stack-based buffer overflow conditions, which are among the most commonly exploited vulnerabilities in enterprise software environments. Organizations running affected versions of VERITAS NetBackup Enterprise Server face significant risk of unauthorized access and data compromise, particularly in environments where backup servers are not properly isolated from external network access. The vulnerability's presence in multiple maintenance packs indicates it was a persistent issue that required ongoing patch management efforts to address.
Mitigation strategies for this vulnerability should include immediate deployment of vendor-provided patches and updates to the NetBackup Enterprise Server software. System administrators should implement network segmentation to limit access to the vmd service ports, utilize firewall rules to restrict network access to only trusted sources, and consider disabling unnecessary network services. Additionally, monitoring network traffic for unusual patterns that might indicate exploitation attempts, conducting regular vulnerability assessments of backup infrastructure, and implementing proper access controls for backup systems can help reduce the attack surface and potential impact of such exploits. The vulnerability serves as a reminder of the critical importance of timely patch management in enterprise security operations.