CVE-2010-3375 in qtparted
Summary
by MITRE
qtparted has insecure library loading which may allow arbitrary code execution
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Analysis
by VulDB Data Team • 10/30/2019
The vulnerability identified as CVE-2010-3375 affects qtparted, a graphical partitioning tool that utilizes the Qt framework for its user interface. This tool is commonly employed in Linux distributions for managing disk partitions through a visual interface rather than command-line utilities. The vulnerability stems from insecure library loading practices within the application's dynamic linking mechanism, creating a potential vector for privilege escalation and arbitrary code execution. The flaw specifically manifests when qtparted loads shared libraries without proper validation of their origins or integrity, allowing malicious actors to exploit this weakness through carefully crafted library files.
The technical implementation of this vulnerability involves the application's failure to properly validate library paths during the loading process, which aligns with CWE-427 Uncontrolled Search Path Element and CWE-428 Uncontrolled Search Path Element. When qtparted executes, it searches for required libraries in a predetermined order that includes user-writable directories, enabling an attacker to place malicious libraries in these locations. The vulnerability operates at the system level where the application runs with elevated privileges, typically requiring root access to perform partitioning operations. This privilege escalation potential makes the vulnerability particularly dangerous as attackers can execute malicious code with the same permissions as the legitimate application.
The operational impact of CVE-2010-3375 extends beyond simple code execution, creating a persistent threat vector that can be exploited in various attack scenarios. An attacker who gains access to a system where qtparted is installed and executable can leverage this vulnerability to gain unauthorized access to system resources, potentially leading to complete system compromise. The attack surface is broadened by the fact that qtparted is often installed on systems where users have the ability to execute partitioning tools, making it a viable target for both local and remote exploitation attempts. This vulnerability directly maps to ATT&CK technique T1068, which describes the use of privilege escalation through insecure library loading, and T1546, covering the modification of system processes to achieve persistence.
Mitigation strategies for this vulnerability require immediate action to address the root cause through proper library loading practices. System administrators should ensure that qtparted is updated to versions that implement secure library loading mechanisms, typically through the use of absolute paths for library loading or by implementing proper library validation checks. The recommended approach includes configuring the application's library search path to prioritize system directories over user-writable locations, thereby preventing malicious libraries from being loaded. Additionally, implementing proper access controls and privilege separation can reduce the impact of exploitation attempts, ensuring that even if an attacker successfully exploits the vulnerability, they cannot escalate privileges beyond the application's intended scope. Organizations should also consider implementing application whitelisting policies that restrict execution of qtparted to authorized users and systems, reducing the attack surface for potential exploitation attempts.