CVE-2008-3875 in OpenSolaris
Summary
by MITRE
The kernel in Sun Solaris 8 through 10 and OpenSolaris before snv_90 allows local users to bypass chroot, zones, and the Solaris Trusted Extensions multi-level security policy, and establish a covert communication channel, via unspecified vectors involving system calls.
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Analysis
by VulDB Data Team • 12/12/2024
This vulnerability represents a critical kernel-level flaw in Sun Solaris operating systems that affects versions 8 through 10 and OpenSolaris before snv_90. The issue stems from unspecified vectors involving system calls that permit local attackers to bypass fundamental security mechanisms including chroot jails, Solaris zones isolation, and the Trusted Extensions multi-level security policy. From a cybersecurity perspective, this vulnerability directly violates the principle of least privilege and undermines the foundational security architecture of the operating system. The vulnerability can be categorized under CWE-284 Access Control, specifically addressing insufficient access control mechanisms within the kernel, and aligns with ATT&CK technique T1068 Valid Accounts for privilege escalation and system compromise.
The technical implementation of this vulnerability allows an attacker with local access to exploit kernel-level system calls to circumvent security boundaries that are typically enforced by the operating system. Chroot jail mechanisms are designed to restrict user processes to specific directory trees, while Solaris zones provide virtualization-based isolation between different system environments. The Trusted Extensions security policy enforces multi-level security by maintaining strict access controls between different security domains. When these protections are bypassed, attackers can gain unauthorized access to resources and information that should remain isolated. The ability to establish covert communication channels further exacerbates the risk, as it enables persistent access and data exfiltration without detection.
The operational impact of this vulnerability is severe for organizations running affected Solaris versions, as it provides local attackers with the capability to escalate privileges and access restricted system resources. This vulnerability essentially nullifies the security model of Solaris by allowing attackers to break out of containment mechanisms and potentially access sensitive data or system functions. The covert communication channel capability means that even if other security measures are in place, attackers can maintain persistence and exfiltrate data without triggering standard monitoring systems. This vulnerability particularly affects enterprise environments where Solaris systems may host critical applications and data requiring strict security controls.
Mitigation strategies for this vulnerability should prioritize immediate patching of affected systems with the appropriate security updates from Sun Microsystems. Organizations should implement comprehensive monitoring to detect anomalous system call patterns and unauthorized access attempts that might indicate exploitation attempts. Network segmentation and access control policies should be strengthened to limit local user access to critical systems. System administrators should conduct thorough security audits to identify and remediate other potential access control vulnerabilities. The vulnerability demonstrates the critical importance of maintaining up-to-date security patches and implementing defense-in-depth strategies that do not rely solely on perimeter-based security controls. Additionally, organizations should consider implementing behavioral analytics and anomaly detection systems to identify potential exploitation attempts that might not be immediately apparent through traditional security monitoring approaches.