CVE-2010-0398 in Autokey
Summary
by MITRE
The init script in autokey before 0.61.3-2 allows local attackers to write to arbitrary files via a symlink attack.
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Analysis
by VulDB Data Team • 02/01/2024
The vulnerability identified as CVE-2010-0398 affects the autokey software version prior to 0.61.3-2, specifically within its init script implementation. This represents a classic symlink attack scenario that exploits insecure file handling practices during system initialization processes. The flaw allows local attackers with minimal privileges to manipulate file system operations by creating symbolic links that redirect file writes to unintended locations. Such attacks typically occur when the init script does not properly validate file paths or implement adequate security checks before performing file operations, creating opportunities for privilege escalation or data corruption.
The technical implementation of this vulnerability stems from improper handling of temporary files or configuration directories within the autokey initialization process. Attackers can exploit this by establishing symbolic links in predictable locations that the init script will attempt to write to during execution. This creates a race condition where the attacker controls the target of the symbolic link, effectively allowing them to write content to arbitrary files on the system. The vulnerability directly relates to CWE-376, which addresses improper handling of temporary files that can be exploited through symlink attacks. The attack vector operates under the principle of privilege escalation through insecure file operations, where a local user can leverage the init script's execution context to modify files outside their intended scope.
The operational impact of CVE-2010-0398 extends beyond simple file manipulation, potentially enabling attackers to compromise system integrity and confidentiality. When the init script executes with elevated privileges during system boot or service initialization, the attacker can leverage this to write malicious content to critical system files, configuration directories, or even overwrite binaries. This vulnerability can be particularly dangerous in multi-user environments where local users might not have direct access to sensitive system components. The attack can result in persistent backdoors, system instability, or complete compromise of the affected system, making it a significant concern for security administrators managing autokey installations.
Mitigation strategies for CVE-2010-0398 primarily involve updating to autokey version 0.61.3-2 or later, which includes proper symlink handling and file validation mechanisms. System administrators should also implement proper file system permissions and audit the init script's execution environment to ensure that temporary directories are properly secured. The remediation aligns with ATT&CK technique T1059.001 for executing commands through init scripts and T1068 for privilege escalation. Additional protective measures include monitoring for suspicious file creation patterns, implementing file integrity monitoring solutions, and ensuring that system initialization processes do not operate with unnecessary privileges. Organizations should also conduct regular security assessments of their init scripts and system startup processes to identify similar vulnerabilities that could be exploited through analogous attack vectors.