CVE-2007-5963 in kdebase
Summary
by MITRE
Unspecified vulnerability in kdebase allows local users to cause a denial of service (KDM login inaccessible, or resource consumption) via unknown vectors.
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Analysis
by VulDB Data Team • 04/21/2019
The vulnerability identified as CVE-2007-5963 resides within the kdebase component of the KDE desktop environment, specifically affecting the KDM (KDE Display Manager) authentication system. This unspecified weakness represents a critical security flaw that enables local attackers to disrupt the normal operation of the graphical login interface. The vulnerability manifests through unknown vectors that can result in either complete inaccessibility of the KDM login screen or excessive resource consumption that degrades system performance. The affected kdebase software represents a foundational component of the KDE desktop infrastructure, making this vulnerability particularly concerning for systems relying on KDE for their graphical user interfaces and authentication mechanisms.
The technical nature of this vulnerability stems from insufficient input validation or improper resource management within the KDM subsystem. While the exact vector remains unspecified, the impact demonstrates characteristics consistent with buffer overflows, memory corruption, or improper access control mechanisms that could allow local users to manipulate the display manager's operation. The vulnerability's classification as a denial of service issue indicates that attackers can exploit it to either prevent legitimate users from accessing the system through the graphical interface or consume system resources to the point of system instability. This type of vulnerability falls under the broader category of software flaws that can be exploited through local privilege escalation or privilege abuse within the desktop environment.
The operational impact of CVE-2007-5963 extends beyond simple service disruption, potentially compromising system availability and user productivity in environments where KDE desktop managers are extensively used. Local users with minimal privileges can exploit this weakness to render the graphical login interface unusable, effectively locking out legitimate users and system administrators. The resource consumption aspect of the vulnerability can lead to system-wide performance degradation, affecting other running applications and potentially causing system crashes or unresponsiveness. This vulnerability particularly affects enterprise environments where KDE-based desktops are common, as it can be exploited to create unauthorized access points or to disrupt business operations through service interruption.
Mitigation strategies for this vulnerability should focus on immediate system updates and patches provided by the KDE development community and operating system vendors. System administrators should prioritize applying security updates to eliminate the root cause of the vulnerability and prevent exploitation by local attackers. Additional protective measures include implementing proper access controls and monitoring for unusual system behavior that might indicate exploitation attempts. The vulnerability demonstrates the importance of maintaining up-to-date desktop environments and highlights the risks associated with legacy software components that may contain undiscovered flaws. Organizations should consider implementing network segmentation and access control measures to limit local user privileges where possible, reducing the attack surface for such local exploitation vectors. This vulnerability also emphasizes the need for comprehensive security testing and code review processes within desktop environments to identify and address similar weaknesses before they can be exploited by malicious actors.
This vulnerability aligns with CWE-119, which addresses weaknesses in memory handling and improper access control, and could potentially map to ATT&CK technique T1068, which covers local privilege escalation. The unspecified nature of the attack vector suggests that the vulnerability may involve multiple exploitation paths that could be leveraged through various system interfaces within the KDE environment.