CVE-2011-0812 in Solaris
Summary
by MITRE
Unspecified vulnerability in the Solaris component in Oracle Solaris 8, 9, 10, and 11 Express allows local users to affect availability via unknown vectors related to Kernel.
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Analysis
by VulDB Data Team • 11/03/2021
The vulnerability identified as CVE-2011-0812 represents a significant security weakness within the Solaris operating system kernel that affects multiple versions including Solaris 8, 9, 10, and 11 Express. This unspecified kernel-level vulnerability creates potential risks for system availability that could be exploited by local attackers who possess system access. The classification as a kernel vulnerability indicates that the flaw exists at the core level of the operating system where critical system functions and resource management occur, making it particularly dangerous as it operates below the user-level processes and can potentially compromise fundamental system operations.
The technical nature of this vulnerability stems from the kernel component within Oracle Solaris, which serves as the central hub for system resource management, process scheduling, and hardware interaction. Kernel vulnerabilities of this type typically arise from improper input validation, memory management issues, or race conditions that can be exploited to cause system instability or complete system failure. The unspecified nature of the vulnerability vectors suggests that the exact exploitation mechanisms are not publicly detailed, which is common with certain types of kernel flaws that may involve complex interactions between system components or specific timing conditions that could lead to denial of service or system crashes.
From an operational impact perspective, local users who can exploit this vulnerability can potentially disrupt system availability through various means that compromise the kernel's ability to function properly. This could manifest as system crashes, reboot loops, or complete system unresponsiveness that affects normal operations. The local privilege requirement means that attackers must already have some form of access to the system, which could be as simple as a standard user account or a compromised service account. The impact extends beyond simple availability issues as kernel-level problems can potentially allow for privilege escalation or data corruption, though the specific scope of this vulnerability appears to be focused on availability disruption rather than direct privilege elevation.
The vulnerability aligns with CWE-119 which describes weaknesses in the storage of data that can lead to buffer overflows and memory corruption issues, commonly found in kernel code where improper bounds checking can result in system instability. This type of vulnerability also maps to ATT&CK technique T1499 which covers network denial of service attacks, though in this case the attack vector is local rather than network-based. The kernel-level nature of the flaw means that traditional network-based security controls may not prevent exploitation, as the attack occurs within the operating system's trusted execution environment where security boundaries are typically not enforced.
Mitigation strategies for this vulnerability should focus on immediate system updates and patches provided by Oracle to address the kernel-level weakness. System administrators should prioritize applying the relevant security patches as soon as they become available, as the vulnerability affects multiple versions of Solaris that are still in use within enterprise environments. Additional protective measures include implementing strict access controls to limit local user privileges, monitoring system logs for unusual activity that might indicate exploitation attempts, and maintaining robust backup and recovery procedures to quickly restore systems if availability is compromised. Network segmentation and monitoring should also be employed to detect any potential lateral movement attempts that might occur if the vulnerability is exploited to gain elevated privileges. The patching process should be carefully planned and tested to ensure that the kernel updates do not introduce compatibility issues with existing applications or system configurations.