CVE-2013-4133 in kde-workspace
Summary
by MITRE
kde-workspace before 4.10.5 has a memory leak in plasma desktop
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Analysis
by VulDB Data Team • 12/25/2024
The vulnerability identified as CVE-2013-4133 affects the kde-workspace component of the KDE desktop environment, specifically impacting versions prior to 4.10.5. This memory leak represents a critical stability issue within the plasma desktop subsystem that can lead to progressive resource exhaustion over time. The flaw manifests in the way the desktop environment manages memory allocation and deallocation during normal desktop operations, creating a condition where allocated memory is not properly released back to the system. This issue falls under the category of memory management flaws that can significantly impact system performance and reliability.
The technical implementation of this vulnerability stems from improper memory handling within the plasma desktop components responsible for managing desktop elements, widgets, and visual effects. When users interact with the desktop environment through normal operations such as opening applications, switching between virtual desktops, or using various plasma applets, the memory allocation mechanisms fail to properly clean up resources. This results in a gradual accumulation of memory that cannot be reclaimed by the operating system, leading to increased memory consumption and potential system instability. The memory leak occurs at the application level within the KDE workspace framework, specifically affecting the plasma desktop shell and its associated components.
The operational impact of this memory leak extends beyond simple performance degradation to potentially cause complete system instability or crashes. As the memory consumption increases over time, the system may experience reduced responsiveness, application slowdowns, or even complete desktop environment failures. Users may observe their systems becoming progressively slower, with applications consuming more and more memory until system resources are exhausted. In severe cases, the memory leak can cause the plasma desktop to become unresponsive or require manual restarts to restore normal functionality. This vulnerability particularly affects long-running systems or those with heavy desktop usage patterns where the accumulation of leaked memory becomes significant.
Mitigation strategies for CVE-2013-4133 primarily involve upgrading to KDE workspace version 4.10.5 or later, which contains the necessary patches to address the memory management issues. System administrators should prioritize this update across all affected systems, particularly in enterprise environments where desktop stability is critical. Additionally, monitoring system memory usage and implementing automated restart procedures for critical desktop environments can help mitigate the impact of the leak. The vulnerability aligns with CWE-401, which specifically addresses memory leaks in software systems, and can be categorized under ATT&CK technique T1490 for resource exhaustion attacks. Organizations should also consider implementing memory monitoring tools to detect abnormal memory consumption patterns that may indicate the presence of this vulnerability. Regular system maintenance and patch management procedures should include verification of KDE workspace versions to ensure protection against this and similar memory-related vulnerabilities.