CVE-2011-2258 in Solaris
Summary
by MITRE
Unspecified vulnerability in Oracle Solaris 8, 9, 10, and 11 Express allows local users to affect confidentiality, integrity, and availability via unknown vectors related to rksh.
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Analysis
by VulDB Data Team • 01/12/2025
The vulnerability identified as CVE-2011-2258 represents a significant security flaw within Oracle Solaris operating systems across multiple versions including Solaris 8, 9, 10, and 11 Express. This unspecified vulnerability specifically impacts the rksh shell component which serves as a critical system utility for command execution and shell operations within the Solaris environment. The rksh shell, being a variant of the Bourne shell, plays a fundamental role in system administration and user interaction with the operating system. The vulnerability's classification as affecting confidentiality, integrity, and availability indicates a severe impact level that could potentially allow local attackers to compromise core system functions. This type of vulnerability is particularly dangerous because it operates at the system level and can be exploited by users who already have local access to the system, making it a critical concern for system administrators and security professionals.
The technical nature of this vulnerability stems from the rksh shell implementation within Oracle Solaris, where unknown vectors related to shell processing or command execution have been identified as potential attack surfaces. These vectors could potentially involve buffer overflows, improper input validation, or memory corruption issues within the shell's parsing mechanisms. The unspecified nature of the vulnerability description suggests that Oracle may not have fully disclosed the precise technical details of the flaw, which is common with certain types of low-level system vulnerabilities that affect core components. The rksh shell's integration with system security features and its role in executing user commands make it a prime target for exploitation that could lead to privilege escalation, data corruption, or system disruption. This vulnerability demonstrates the inherent complexity of shell implementations and how seemingly minor flaws can have far-reaching consequences for system security.
The operational impact of CVE-2011-2258 extends beyond simple data compromise to encompass full system integrity and availability risks. Local users who exploit this vulnerability could potentially gain unauthorized access to sensitive system information, modify critical system files, or disrupt system services through various attack vectors. The confidentiality aspect suggests that attackers might be able to access protected data or system information that should remain hidden from unauthorized users. The integrity implications indicate that system files or configurations could be modified without proper authorization, potentially leading to system instability or further compromise. Availability concerns mean that attackers could potentially cause system crashes or denial of service conditions, affecting legitimate system usage. This vulnerability affects multiple versions of Solaris, making it particularly concerning for organizations maintaining legacy systems that may not have received subsequent security updates.
The mitigation strategies for this vulnerability should prioritize immediate patching and system updates from Oracle to address the rksh shell implementation flaws. Organizations should implement comprehensive system monitoring to detect potential exploitation attempts and establish robust access controls to limit local user privileges where possible. Security professionals should conduct thorough vulnerability assessments to identify systems running affected Solaris versions and prioritize remediation efforts accordingly. The vulnerability's nature as a local privilege escalation issue aligns with CWE-264, which addresses permissions and access control weaknesses in system components. From an attack perspective, this vulnerability could be categorized under ATT&CK techniques involving privilege escalation and persistence mechanisms, particularly when exploited by adversaries seeking to maintain access to compromised systems. System administrators should also consider implementing additional security controls such as mandatory access controls, regular security audits, and monitoring for unusual shell command patterns that might indicate exploitation attempts. The remediation process should include comprehensive testing to ensure that patches do not introduce compatibility issues with existing system applications and services.