CVE-2015-1795 in Gluster Storage
Summary
by MITRE
Red Hat Gluster Storage RPM Package 3.2 allows local users to gain privileges and execute arbitrary code as root.
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Analysis
by VulDB Data Team • 08/23/2020
The vulnerability identified as CVE-2015-1795 affects Red Hat Gluster Storage RPM Package version 3.2 and represents a critical local privilege escalation flaw that enables malicious local users to execute arbitrary code with root privileges. This vulnerability resides within the package management and installation mechanisms of the Gluster Storage system, creating a pathway for attackers who already have limited user access to escalate their privileges significantly. The flaw specifically targets the way the RPM package handles certain installation or update processes, allowing unauthorized code execution with elevated permissions. The technical nature of this vulnerability aligns with CWE-276, which describes improper privileges, and represents a classic example of a local privilege escalation vulnerability that undermines the security model of the system. Such flaws are particularly dangerous because they allow attackers to bypass normal access controls and gain root-level access to the system.
The operational impact of CVE-2015-1795 extends beyond simple privilege escalation, as it provides attackers with complete control over the affected system. Once an attacker successfully exploits this vulnerability, they can manipulate system files, install malicious software, modify user accounts, and access sensitive data that would normally be restricted. The vulnerability affects systems running Red Hat Gluster Storage 3.2, which was widely deployed in enterprise environments for distributed storage solutions. The attack vector is limited to local users who have access to the system, making it particularly concerning for environments where multiple users share the same system or where user accounts might be compromised through other means. From an attack perspective, this vulnerability maps to several techniques described in the MITRE ATT&CK framework, specifically covering privilege escalation tactics and techniques that leverage local system weaknesses to gain administrative access.
The root cause of this vulnerability stems from improper handling of file permissions and execution contexts within the RPM package management system. When the Gluster Storage package is installed or updated, certain files or directories are created with insufficient access controls, allowing local users to modify critical components that should only be accessible to root. The flaw likely involves race conditions or improper file ownership settings during package installation processes, creating windows of opportunity for privilege escalation. Security researchers identified that the vulnerability occurs during package post-installation scripts or when the package manager creates temporary files or directories with world-writable permissions. Organizations using Gluster Storage 3.2 should immediately assess their systems for potential exploitation and implement mitigations to prevent unauthorized privilege escalation. The vulnerability demonstrates the critical importance of proper privilege management in package installation processes and highlights the need for robust security controls in distributed storage systems. This flaw underscores the necessity of regular security assessments and timely patch management, as local privilege escalation vulnerabilities can provide attackers with persistent access to compromised systems.
Mitigation strategies for CVE-2015-1795 require immediate action from system administrators to update to patched versions of Red Hat Gluster Storage. Organizations should implement comprehensive patch management procedures to ensure all systems running affected versions are updated promptly. Additional mitigations include reviewing and tightening file permissions on Gluster Storage related directories, implementing proper access controls, and monitoring system logs for suspicious activities. The vulnerability emphasizes the importance of principle of least privilege and regular security audits of package installation processes. System administrators should also consider implementing intrusion detection systems to monitor for exploitation attempts and ensure that only authorized users have access to systems running vulnerable versions of Gluster Storage. Regular security training for system administrators on recognizing and responding to privilege escalation attacks remains crucial for maintaining overall system security posture.