CVE-2012-0539 in Solaris
Summary
by MITRE
Unspecified vulnerability in Oracle Sun Solaris 8, 9, and 10 allows local users to affect confidentiality, integrity, and availability via unknown vectors related to (1) bsmconv and (2) bsmunconv.
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Analysis
by VulDB Data Team • 01/04/2025
The vulnerability identified as CVE-2012-0539 represents a significant security flaw within Oracle Sun Solaris operating systems spanning versions 8, 9, and 10. This issue manifests as an unspecified weakness in the system's auditing infrastructure, specifically affecting two critical components: bsmconv and bsmunconv utilities. These tools are integral parts of the Solaris Basic Security Module (BSM) framework that handles audit record conversion and processing. The vulnerability's classification as local privilege escalation means that an attacker with existing system access can exploit this weakness to compromise system integrity, confidentiality, and availability. The unspecified nature of the vulnerability vectors suggests that the underlying flaw may involve multiple attack surfaces within the BSM processing mechanisms, potentially including buffer overflows, improper input validation, or memory corruption issues that could be leveraged to execute arbitrary code or manipulate audit records.
The technical impact of this vulnerability extends beyond simple privilege elevation as it directly affects the fundamental security auditing capabilities of the Solaris system. The bsmconv utility is responsible for converting audit records between different formats, while bsmunconv handles the reverse process, making these components critical for system security monitoring and compliance activities. When compromised, these utilities can be manipulated to either hide malicious activities from audit logs, corrupt existing audit data, or potentially execute unauthorized commands with elevated privileges. The vulnerability's presence in multiple Solaris versions indicates a systemic flaw in the BSM implementation that has persisted across several iterations of the operating system. This widespread impact suggests that the underlying issue likely involves core system libraries or kernel components that are shared across these versions, making the vulnerability particularly concerning for organizations maintaining legacy Solaris deployments.
The operational implications of CVE-2012-0539 are severe for enterprise environments relying on Solaris systems for critical operations. Organizations using these vulnerable versions face potential data breaches, audit trail manipulation, and system compromise that could go undetected for extended periods. The local nature of the vulnerability means that attackers do not require network access or special privileges beyond basic user accounts, making detection and prevention more challenging. This vulnerability directly impacts the integrity of security monitoring systems, potentially allowing attackers to cover their tracks while maintaining persistent access to compromised systems. The availability aspect of the vulnerability could manifest through denial-of-service conditions or system crashes that occur when audit record processing fails due to corrupted data or memory corruption issues. From a compliance perspective, organizations may find their security audit trails compromised, potentially violating regulatory requirements for audit logging and monitoring.
Mitigation strategies for CVE-2012-0539 should prioritize immediate patching of affected Solaris systems through Oracle's official security updates. Organizations should implement network segmentation and access controls to limit local user access to systems running vulnerable Solaris versions. Security monitoring should include regular audit trail integrity checks and anomaly detection for unusual bsmconv and bsmunconv usage patterns. System administrators should consider disabling unnecessary audit record conversion utilities when not actively required, reducing the attack surface. The vulnerability aligns with CWE-119 which addresses weaknesses in memory management and improper input validation, while also mapping to ATT&CK techniques involving privilege escalation and defense evasion. Organizations should conduct comprehensive security assessments of their Solaris environments to identify all systems running vulnerable versions and prioritize remediation efforts based on risk exposure. Long-term solutions include migrating to supported Solaris versions or alternative operating systems that have addressed this and related vulnerabilities in their security architecture.