CVE-2008-0581 in Supercrypt
Summary
by MITRE
Geert Moernaut LSrunasE allows local users to gain privileges by obtaining the encrypted password from a batch file, and constructing a modified batch file that specifies this password in the /password switch and specifies an arbitrary program in the /command switch.
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Analysis
by VulDB Data Team • 09/16/2018
The vulnerability identified as CVE-2008-0581 affects LSrunasE software developed by Geert Moernaut, presenting a significant local privilege escalation risk within Windows environments. This flaw resides in how the application handles authentication credentials when executing commands with elevated privileges, creating a pathway for malicious actors to bypass normal security controls and execute arbitrary code with higher privileges than initially granted.
The technical implementation of this vulnerability stems from improper handling of encrypted password storage within batch files. When LSrunasE executes commands, it stores authentication credentials in an encrypted format within batch execution files. Local users can access these batch files and extract the encrypted password components, which can then be decoded or manipulated to construct modified batch files. The vulnerability specifically exploits the /password switch functionality that allows users to specify credentials for command execution, combined with the /command switch that determines what program executes with those credentials.
This flaw operates under the broader category of credential exposure and privilege escalation vulnerabilities, aligning with CWE-256 which addresses "Incomplete Password Verification" and CWE-782 which covers "Exposure of Sensitive Information through Design Flaw." The vulnerability represents a design weakness in credential handling that violates fundamental security principles of least privilege and proper access control enforcement. Attackers can leverage this weakness to execute arbitrary programs with elevated privileges without proper authentication, effectively circumventing the intended security boundaries of the system.
The operational impact of this vulnerability extends beyond simple privilege escalation, as it enables attackers to maintain persistence and conduct further reconnaissance or exploitation activities within the compromised system. Once an attacker gains elevated privileges through this method, they can access sensitive system resources, modify critical files, install malicious software, or establish backdoors. The vulnerability is particularly dangerous in enterprise environments where users may have legitimate access to batch file execution but should not possess the ability to escalate privileges without proper authorization.
Mitigation strategies for CVE-2008-0581 should focus on both immediate remediation and long-term architectural improvements. The primary solution involves updating to a patched version of LSrunasE software that properly handles credential encryption and prevents unauthorized access to encrypted password components. Organizations should implement strict access controls on batch files and system directories containing authentication information, utilizing discretionary access control lists and mandatory access controls where appropriate. Additionally, monitoring and logging of batch file execution should be enhanced to detect unauthorized modifications or privilege escalation attempts. The implementation of principle of least privilege should ensure that users cannot execute commands requiring elevated privileges without proper authorization and audit trails. This vulnerability also highlights the importance of secure coding practices and proper credential handling mechanisms that align with NIST SP 800-63 standards for authentication and access control.