CVE-2013-0399 in Solaris
Summary
by MITRE
Unspecified vulnerability in Oracle Sun Solaris 9 and 10 allows local users to affect confidentiality, integrity, and availability via unknown vectors related to Utility/Umount.
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Analysis
by VulDB Data Team • 12/28/2024
The vulnerability identified as CVE-2013-0399 represents a critical security flaw within Oracle Sun Solaris operating systems version 9 and 10, specifically impacting the utility umount functionality. This unspecified weakness in the system's core mounting and unmounting mechanisms creates potential attack vectors that could compromise the fundamental security principles of confidentiality, integrity, and availability. The vulnerability's classification as local means that exploitation requires an attacker to already possess user-level access to the target system, making it particularly concerning for environments where privilege escalation or lateral movement attacks are possible.
The technical nature of this vulnerability stems from improper handling of file system unmount operations within the Solaris kernel, where the umount utility fails to adequately validate or sanitize input parameters during the unmounting process. This flaw likely involves buffer overflows, memory corruption issues, or improper access control mechanisms that allow malicious code execution or privilege escalation when the umount command is invoked with crafted arguments. The unspecified nature of the vulnerability description indicates that Oracle has not fully disclosed the specific technical implementation details, which is common with certain classes of kernel-level vulnerabilities where complete disclosure could aid attackers in developing more sophisticated exploitation techniques.
From an operational impact perspective, this vulnerability could enable local attackers to manipulate the file system state in ways that compromise system integrity and availability. An attacker with local access could potentially cause system crashes, corrupt file system metadata, or gain elevated privileges through manipulation of the umount process. The confidentiality implications arise from potential exposure of sensitive data through file system manipulation or by exploiting the vulnerability to access restricted system resources. The attack surface is particularly concerning because umount operations are frequently performed during system maintenance, application deployment, or user session management, providing multiple potential exploitation opportunities.
Security professionals should implement immediate mitigations including restricting local user access to system administration functions, monitoring for suspicious umount operations, and applying the relevant Oracle security patches as soon as they become available. The vulnerability aligns with CWE-119 which deals with improper access to memory locations, and may relate to ATT&CK techniques involving privilege escalation and persistence mechanisms. Organizations should also consider implementing network segmentation to limit local access rights and establish monitoring protocols for anomalous system behavior during file system operations. The attack vector classification indicates this vulnerability requires local system access, but the potential for privilege escalation makes it particularly dangerous in multi-user environments where attackers might obtain initial access through other means before leveraging this weakness.