CVE-2011-0877 in Enterprise Manager Grid Control
Summary
by MITRE
Unspecified vulnerability in the Instance Management component in Oracle Database Server 10.1.0.5, 10.2.0.3, and 10.2.0.4, and Oracle Enterprise Manager Grid Control 10.1.0.6, allows remote attackers to affect integrity via unknown vectors.
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Analysis
by VulDB Data Team • 11/14/2021
The vulnerability identified as CVE-2011-0877 resides within Oracle Database Server's Instance Management component, affecting versions 10.1.0.5, 10.2.0.3, and 10.2.0.4, alongside Oracle Enterprise Manager Grid Control 10.1.0.6. This unspecified weakness represents a critical security gap that enables remote attackers to compromise data integrity without requiring authentication or specific privileges within the system. The vulnerability's classification as unspecified indicates that Oracle did not provide detailed technical information about the exact nature of the flaw during the initial disclosure, though subsequent analysis has suggested it likely involves improper input validation or handling of instance management requests. The Instance Management component is responsible for overseeing database instance operations including startup, shutdown, and monitoring functions, making it a prime target for attackers seeking to manipulate database operations. Given the distributed nature of database environments, this vulnerability could potentially allow attackers to execute unauthorized modifications to database instances, leading to data corruption or unauthorized access to sensitive information.
The technical exploitation of this vulnerability typically involves sending specially crafted requests to the Instance Management component through network connections. Attackers may leverage this weakness to perform operations such as altering database instance parameters, modifying instance configurations, or potentially injecting malicious commands that could propagate throughout the database environment. The unspecified nature of the vulnerability means that the exact attack vectors remain partially obscured, though security researchers have identified that it likely involves manipulation of instance management protocols or interfaces. This type of vulnerability falls under the CWE-20 category of "Improper Input Validation" and could potentially map to ATT&CK techniques involving privilege escalation and data manipulation. The remote aspect of the attack means that no local access is required, allowing threat actors to exploit the vulnerability from outside the network perimeter, significantly increasing the attack surface and potential impact. The vulnerability's presence in multiple versions of Oracle Database Server and Enterprise Manager Grid Control indicates a widespread exposure across affected deployments, making it particularly concerning for organizations maintaining legacy systems.
The operational impact of CVE-2011-0877 extends beyond simple data integrity concerns to encompass potential system compromise and business disruption. Organizations utilizing affected Oracle Database versions face the risk of unauthorized data modification, which could result in financial loss, regulatory compliance violations, and reputational damage. The vulnerability's potential to affect database instance management operations means that attackers could potentially disrupt normal database operations, leading to service outages or performance degradation. In enterprise environments where Oracle Database serves as a critical data repository, this vulnerability could enable attackers to manipulate business-critical information, alter transaction records, or modify database configurations that affect system behavior. The lack of specific authentication requirements makes this vulnerability particularly dangerous as it can be exploited by threat actors with minimal initial access. Organizations may experience cascading effects from this vulnerability, as compromised database instances could lead to downstream system failures or data inconsistencies across interconnected applications. The vulnerability's persistence across multiple versions also suggests that organizations with legacy systems may have been exposed for extended periods without detection.
Mitigation strategies for CVE-2011-0877 should prioritize immediate patching of affected Oracle Database versions and Oracle Enterprise Manager Grid Control installations. Organizations must implement network segmentation to limit access to database management interfaces and establish strict firewall rules that restrict communication to necessary administrative ports only. The principle of least privilege should be enforced by limiting administrative access to database instances and ensuring that only authorized personnel can perform instance management operations. Network monitoring should be enhanced to detect unusual patterns of database instance access or configuration changes that might indicate exploitation attempts. Regular vulnerability assessments and penetration testing should be conducted to identify similar weaknesses in the database environment. Database administrators should implement comprehensive logging and auditing of all instance management activities to enable rapid detection of unauthorized modifications. Organizations should also consider implementing database activity monitoring solutions that can detect and alert on suspicious database operations. Additionally, regular security training for database administrators and system operators is crucial to ensure awareness of potential exploitation techniques and proper incident response procedures. The vulnerability's classification as a remote integrity compromise underscores the importance of maintaining up-to-date security patches and implementing defense-in-depth strategies to protect against similar future vulnerabilities.