CVE-2011-0806 in Database Server
Summary
by MITRE
Unspecified vulnerability in the Network Foundation component in Oracle Database Server 10.1.0.5, 10.2.0.4, 10.2.0.5, 11.1.0.7, 11.2.0.1, and 11.2.0.2, when running on Windows, allows remote attackers to affect availability via unknown vectors.
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Analysis
by VulDB Data Team • 11/03/2021
The vulnerability identified as CVE-2011-0806 resides within the Network Foundation component of Oracle Database Server versions spanning multiple release lines including 10.1.0.5, 10.2.0.4, 10.2.0.5, 11.1.0.7, 11.2.0.1, and 11.2.0.2 when operating on Windows platforms. This designation indicates a critical security weakness that affects the fundamental network communication infrastructure of the database system, potentially compromising system availability and operational integrity. The vulnerability specifically targets the Network Foundation layer which handles network protocols and communication mechanisms essential for database operations across networked environments. The unspecified nature of the vulnerability vectors suggests that attackers can exploit multiple attack surfaces within the network foundation component without clear identification of specific technical mechanisms, making the threat assessment particularly challenging for security professionals.
The technical flaw manifests as a weakness in how the Network Foundation component processes network requests and communications on Windows operating systems. This component is responsible for handling database network traffic, managing client connections, and processing network protocols that enable database access from remote locations. When exploited, the vulnerability allows remote attackers to disrupt the availability of the database service through unspecified attack vectors that likely involve manipulating network communication patterns or exploiting resource handling mechanisms within the network foundation layer. The impact extends beyond simple denial of service to potentially compromising the entire database availability, which could result in significant business disruption and data accessibility issues for organizations relying on these database systems.
The operational impact of CVE-2011-0806 represents a serious threat to database availability and system reliability, particularly for organizations running affected Oracle Database Server versions on Windows platforms. Attackers leveraging this vulnerability can potentially cause database service interruptions, leading to extended downtime that affects business operations, user access, and data processing capabilities. The remote nature of the attack means that adversaries do not require physical access or local system privileges to exploit the weakness, making the vulnerability particularly dangerous in networked environments where databases are exposed to external networks. This vulnerability aligns with attack patterns described in the MITRE ATT&CK framework under the availability impact category, specifically targeting system availability through network-based attacks that can result in complete service disruption.
Organizations affected by this vulnerability should implement immediate mitigations including applying the relevant Oracle Critical Patch Updates that address the specific network foundation component weaknesses. The remediation process should involve comprehensive patch management procedures to ensure all affected database instances are updated with the appropriate security fixes. Additionally, network segmentation strategies should be implemented to limit exposure of database servers to untrusted networks, while monitoring systems should be enhanced to detect anomalous network traffic patterns that might indicate exploitation attempts. Security teams should also consider implementing intrusion detection systems that can identify potential exploitation attempts targeting the network foundation component, as the unspecified nature of the attack vectors makes traditional signature-based detection challenging. The vulnerability demonstrates the importance of maintaining up-to-date security patches and implementing defense-in-depth strategies to protect critical database infrastructure from remote exploitation attempts.