CVE-1999-1192 in Solaris
Summary
by MITRE
buffer overflow in eeprom in solaris 2.5.1 and earlier allows local users to gain root privileges via a long command line argument.
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Analysis
by VulDB Data Team • 01/21/2025
The vulnerability identified as CVE-1999-1192 represents a critical buffer overflow flaw within the eeprom utility of solaris 2.5.1 and earlier versions. This issue resides in the command line argument processing mechanism where insufficient bounds checking allows malicious input to overwrite adjacent memory regions. The eeprom utility, which serves to read and write system configuration data stored in the eeprom device, becomes a vector for privilege escalation when exploited by local attackers. The flaw specifically manifests when the utility processes command line arguments without proper validation of input length, creating an exploitable condition that can be leveraged to execute arbitrary code with elevated privileges. The vulnerability directly impacts the system's security model by allowing unprivileged users to potentially escalate their privileges to root level access, fundamentally compromising the integrity and confidentiality of the affected system.
This buffer overflow vulnerability aligns with CWE-121, which describes stack-based buffer overflow conditions where insufficient bounds checking allows attackers to overwrite adjacent memory locations. The exploitability of this flaw is particularly concerning as it requires only local system access, making it accessible to any user who can execute the eeprom utility. The attack vector involves crafting a specially constructed command line argument that exceeds the allocated buffer space, causing the overflow to overwrite return addresses or other critical program state information. This type of vulnerability enables attackers to redirect program execution flow and ultimately gain root privileges through the exploitation of the privilege escalation mechanism inherent in the eeprom utility's operation. The vulnerability demonstrates a classic example of how insufficient input validation in system utilities can create significant security implications.
The operational impact of CVE-1999-1192 extends beyond simple privilege escalation to encompass broader system compromise and potential data breaches. Local users who exploit this vulnerability can gain complete control over the system's configuration management capabilities, potentially allowing them to modify critical system parameters, disable security features, or establish persistent access mechanisms. The exploitation of this buffer overflow creates a persistent threat vector that can be leveraged for further attacks within the network infrastructure, as the compromised system can serve as a launching point for additional reconnaissance and lateral movement activities. The vulnerability also impacts system availability through potential crashes or unpredictable behavior when the buffer overflow occurs, leading to denial of service conditions that could affect legitimate system operations. This type of local privilege escalation vulnerability directly violates the principle of least privilege and undermines the fundamental security architecture of the solaris operating system.
Mitigation strategies for CVE-1999-1192 should prioritize immediate system updates and patches from sun microsystems to address the buffer overflow condition in the eeprom utility. System administrators should implement strict access controls to limit local user privileges and reduce the attack surface available to potential exploiters. The deployment of input validation mechanisms and bounds checking within the eeprom utility would prevent the overflow condition from occurring, while regular security audits can identify similar vulnerabilities in other system utilities. Additionally, implementing monitoring solutions to detect suspicious command line argument patterns and unusual eeprom utility usage can provide early warning of exploitation attempts. The vulnerability highlights the importance of secure coding practices and input validation as outlined in the software security guidelines that emphasize defensive programming techniques to prevent buffer overflow conditions. Organizations should also consider implementing privilege separation mechanisms and ensuring that system utilities operate with minimal necessary privileges to reduce the impact of potential exploitation. Regular vulnerability assessments and security training for system administrators remain essential to maintaining robust defenses against such exploitation vectors that leverage fundamental system utility flaws.