CVE-2005-1920 in KDE
Summary
by MITRE
The (1) Kate and (2) Kwrite applications in KDE KDE 3.2.x through 3.4.0 do not properly set the same permissions on the backup file as were set on the original file, which could allow local users and possibly remote attackers to obtain sensitive information.
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Analysis
by VulDB Data Team • 06/30/2025
The vulnerability identified as CVE-2005-1920 affects the Kate and Kwrite text editors within the KDE 3.2.x through 3.4.0 software suite, representing a significant security flaw in file permission handling mechanisms. This issue stems from the improper synchronization of file permissions between original documents and their corresponding backup files, creating potential information disclosure risks. The vulnerability specifically targets the backup functionality of these applications, which are widely used text editors in the KDE desktop environment.
The technical flaw manifests in the backup file creation process where the applications fail to maintain identical permission settings between the original file and its backup counterpart. This misconfiguration allows local users to potentially access backup files that should remain restricted, and in certain network configurations, may enable remote attackers to exploit this weakness. The root cause lies in the applications' failure to properly implement permission inheritance during backup file generation, creating a privilege escalation vector through information disclosure.
The operational impact of this vulnerability extends beyond simple information disclosure, as it can enable attackers to gain unauthorized access to sensitive data stored in backup files. Local users with access to the system can exploit this weakness to read files that contain confidential information, while remote attackers may leverage this vulnerability in specific scenarios involving networked file systems or shared environments. The vulnerability affects all versions within the KDE 3.2.x through 3.4.0 range, indicating a prolonged period of exposure without proper resolution.
This vulnerability aligns with CWE-276, which addresses improper file permissions, and represents a classic case of inadequate access control implementation. From an ATT&CK framework perspective, this weakness maps to privilege escalation and credential access techniques, as it allows unauthorized information retrieval through file system manipulation. The vulnerability also demonstrates characteristics of information exposure through improper file handling, which is commonly addressed through proper file system permission management and access control mechanisms.
Mitigation strategies should focus on immediate patching of affected KDE versions to ensure proper permission synchronization between original files and backups. System administrators should implement mandatory access controls and regularly audit file permissions to identify potential misconfigurations. Additionally, users should be educated about the risks of storing sensitive information in applications with known permission handling flaws. The recommended approach involves updating to patched versions of KDE, implementing file system monitoring, and establishing proper backup file permission policies that align with security best practices and compliance requirements.