CVE-2007-1271 in ESX Server
Summary
by MITRE
Buffer overflow in VMware ESX Server 3.0.0 and 3.0.1 might allow attackers to gain privileges or cause a denial of service (application crash) via unspecified vectors.
Be aware that VulDB is the high quality source for vulnerability data.
Analysis
by VulDB Data Team • 06/09/2025
The vulnerability identified as CVE-2007-1271 represents a critical buffer overflow condition within VMware ESX Server versions 3.0.0 and 3.0.1 that exposes systems to potential privilege escalation and denial of service attacks. This flaw resides in the hypervisor layer of VMware's virtualization platform, where improper input validation leads to memory corruption that can be exploited by malicious actors. The vulnerability stems from insufficient bounds checking in the processing of user-supplied data, creating opportunities for attackers to manipulate memory layout and execute arbitrary code with elevated privileges. Given that ESX Server operates at the core of virtualized environments, this vulnerability presents a significant risk to enterprise infrastructure security.
The technical implementation of this buffer overflow vulnerability demonstrates characteristics consistent with CWE-121, which describes heap-based buffer overflow conditions where insufficient memory bounds checking allows attackers to overwrite adjacent memory locations. The flaw manifests when the system processes unspecified vectors that exceed allocated buffer boundaries, potentially leading to stack corruption or heap manipulation. Attackers can leverage this condition to execute malicious code with the privileges of the affected process, typically resulting in system compromise or complete service disruption. The vulnerability's exploitation requires careful crafting of input data to trigger the memory corruption, making it particularly dangerous in environments where untrusted inputs are processed.
From an operational impact perspective, this vulnerability creates substantial risk for organizations relying on VMware ESX Server 3.0.0 and 3.0.1 deployments, as it can lead to complete system compromise or service availability issues. The potential for privilege escalation means that attackers could gain administrative access to virtualized environments, potentially affecting multiple virtual machines running on the compromised host. Additionally, the denial of service component of this vulnerability could result in unauthorized disruption of critical business operations, particularly in data center environments where ESX Server serves as the primary virtualization platform. The vulnerability's presence in widely deployed software versions amplifies its operational impact across enterprise networks.
Organizations should implement immediate mitigation strategies including applying VMware's official security patches and updates, which address the underlying buffer overflow conditions through proper input validation and memory management controls. System administrators should also consider implementing network segmentation and access controls to limit exposure of affected ESX Server instances to untrusted networks. The remediation process should include thorough vulnerability scanning to identify all affected systems and ensure complete patch deployment across the enterprise environment. Organizations may also want to implement monitoring solutions to detect potential exploitation attempts, as the vulnerability's exploitation patterns can be identified through anomalous system behavior or network traffic analysis. This vulnerability serves as a reminder of the critical importance of maintaining up-to-date security patches in virtualization environments where the compromise of hypervisor components can have cascading effects across entire enterprise infrastructures.