CVE-2011-0266 in OpenView Network Node Manager
Summary
by MITRE
Buffer overflow in nnmRptConfig.exe in HP OpenView Network Node Manager (OV NNM) 7.51 and 7.53 allows remote attackers to execute arbitrary code via a long nameParams parameter, a different vulnerability than CVE-2011-0267.2.
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Analysis
by VulDB Data Team • 05/31/2025
The vulnerability identified as CVE-2011-0266 represents a critical buffer overflow flaw within HP OpenView Network Node Manager version 7.51 and 7.53, specifically affecting the nnmRptConfig.exe component. This issue resides in the handling of the nameParams parameter, which creates an exploitable condition that enables remote code execution. The vulnerability operates through a distinct code path from CVE-2011-0267, making it a separate but equally dangerous threat vector within the HP OpenView ecosystem. The buffer overflow occurs when the application processes a malformed nameParams parameter that exceeds the allocated buffer size, leading to memory corruption that can be leveraged by malicious actors.
This technical flaw falls under the Common Weakness Enumeration category of CWE-121, which describes stack-based buffer overflow conditions where insufficient bounds checking allows attackers to overwrite adjacent memory locations. The vulnerability is particularly concerning because it permits remote code execution without requiring authentication, making it an attractive target for attackers seeking to compromise network management systems. The nnmRptConfig.exe process likely operates with elevated privileges due to its role in network reporting and configuration management, amplifying the potential impact of successful exploitation. Attackers can craft malicious payloads that manipulate the nameParams parameter to overwrite return addresses, function pointers, or other critical memory structures, potentially enabling arbitrary code execution on the target system.
The operational impact of CVE-2011-0266 extends beyond simple remote code execution to encompass complete system compromise and potential network infiltration. Since HP OpenView Network Node Manager serves as a critical component in network monitoring and management, exploitation could provide attackers with access to sensitive network information, enable lateral movement within the network infrastructure, and potentially allow for persistent backdoor installation. The vulnerability's remote exploitability means that attackers need not have physical access or network credentials to the system, significantly increasing the attack surface. Organizations relying on HP OpenView NNM for network management face substantial risk if this vulnerability remains unpatched, as it could lead to complete network compromise and data exfiltration.
Mitigation strategies for CVE-2011-0266 should include immediate deployment of vendor-provided patches and updates, as well as network segmentation to limit access to the affected systems. Organizations should implement network monitoring to detect unusual parameter usage patterns that might indicate exploitation attempts. The vulnerability aligns with ATT&CK technique T1059.007 for remote code execution through command injection, and T1068 for privilege escalation. System administrators should also consider implementing input validation controls, disabling unnecessary network services, and applying the principle of least privilege to limit the potential damage from successful exploitation. Additionally, regular security assessments and vulnerability scanning should be conducted to identify similar buffer overflow vulnerabilities in other network management tools and applications that may be running on the network infrastructure.