CVE-2008-6552 in gfs2-utils
Summary
by MITRE
Red Hat Cluster Project 2.x allows local users to modify or overwrite arbitrary files via symlink attacks on files in /tmp, involving unspecified components in Resource Group Manager (aka rgmanager) before 2.03.09-1, gfs2-utils before 2.03.09-1, and CMAN - The Cluster Manager before 2.03.09-1 on Fedora 9.
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Analysis
by VulDB Data Team • 03/30/2025
The vulnerability identified as CVE-2008-6552 represents a critical symlink attack vector within the Red Hat Cluster Project 2.x ecosystem affecting multiple core components including Resource Group Manager rgmanager, gfs2-utils, and CMAN cluster manager. This issue specifically targets the insecure handling of temporary files within the /tmp directory structure, creating a privilege escalation pathway for local attackers who can manipulate symbolic links to gain unauthorized access to system resources. The vulnerability exists in versions prior to 2.03.09-1 across Fedora 9 installations, making it particularly concerning given the widespread deployment of these cluster management tools in enterprise environments where system integrity and data protection are paramount.
The technical flaw manifests through improper file handling procedures where the affected components fail to validate the authenticity of symbolic links before creating or modifying files in the /tmp directory. When these cluster management utilities process temporary files, they do not properly check whether the target file paths are legitimate or if they point to symbolic links that could be manipulated by unauthorized users. This creates a race condition scenario where an attacker can establish malicious symbolic links in the /tmp directory before the legitimate processes attempt to create or modify files, effectively allowing them to redirect file operations to arbitrary locations on the filesystem. The vulnerability aligns with CWE-376, which addresses improper handling of temporary files and symbolic links, and specifically demonstrates the dangerous intersection of insecure temporary file creation and privilege escalation techniques.
The operational impact of this vulnerability extends beyond simple file manipulation to potentially enable complete system compromise when exploited by malicious actors with local access. Attackers could leverage this vulnerability to overwrite critical system files, modify configuration data for cluster management services, or inject malicious code into the cluster infrastructure. The implications are particularly severe in high-availability cluster environments where the integrity of the Resource Group Manager and Cluster Manager components directly affects system stability and data availability. Organizations running Red Hat Cluster Project 2.x components without the patched versions face significant risk of unauthorized access to cluster configuration data, potential denial of service conditions, and possible escalation to full system compromise. This vulnerability directly relates to ATT&CK technique T1059 for executing malicious code and T1068 for privilege escalation, making it a critical concern for security operations teams managing clustered computing environments.
Mitigation strategies for CVE-2008-6552 require immediate patching of all affected components including rgmanager, gfs2-utils, and CMAN to versions 2.03.09-1 or later. System administrators should implement comprehensive monitoring of the /tmp directory for suspicious symlink activity and establish automated scanning procedures to detect potential exploitation attempts. Additional protective measures include restricting write permissions to critical system directories, implementing proper file ownership verification before file operations, and ensuring that all cluster management processes run with minimal required privileges. Organizations should also consider implementing intrusion detection systems specifically configured to monitor for symlink attack patterns and establish regular security audits of cluster management configurations to identify and remediate similar vulnerabilities in other system components. The vulnerability demonstrates the importance of secure coding practices in cluster management software and highlights the need for thorough security testing of critical infrastructure components that handle temporary file operations in multi-user environments.