CVE-2019-25567 in Valentina Studio
Summary
by MITRE • 03/21/2026
Valentina Studio 9.0.5 Linux contains a buffer overflow vulnerability in the Host field of the connection dialog that allows local attackers to crash the application by supplying an oversized input string. Attackers can trigger the vulnerability by pasting a crafted buffer exceeding 264 bytes into the Host field during server connection attempts, causing a denial of service.
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Analysis
by VulDB Data Team • 03/21/2026
The vulnerability identified as CVE-2019-25567 represents a critical buffer overflow flaw within Valentina Studio 9.0.5 for Linux systems. This security weakness resides in the connection dialog's Host field implementation, where insufficient input validation allows maliciously crafted data to overwrite adjacent memory segments. The flaw specifically manifests when users attempt to establish server connections through the graphical interface, making it particularly dangerous as it can be triggered during routine database administration tasks. The vulnerability operates under the well-documented CWE-121 context of stack-based buffer overflow, where the application fails to properly bounds-check user-supplied input before copying it into fixed-length memory buffers.
The technical exploitation of this vulnerability requires attackers to supply an input string exceeding 264 bytes in the Host field of the connection dialog. When this oversized string is processed by the application's input handling routines, it overflows the designated buffer space and corrupts adjacent memory locations, ultimately leading to application crash or termination. The vulnerability is classified as a local privilege escalation vector since it can be triggered by any user with access to the application, requiring no network connectivity or remote exploitation capabilities. This characteristic makes the flaw particularly concerning for environments where database administrators regularly connect to multiple servers through the Valentina Studio interface.
The operational impact of CVE-2019-25567 extends beyond simple denial of service conditions, as it can disrupt database administration workflows and potentially expose system stability issues. Organizations relying on Valentina Studio for database management may experience unexpected application crashes during critical operations, leading to productivity losses and potential data access interruptions. The vulnerability's local nature means that attackers do not require network exposure or authentication to exploit the flaw, making it accessible to any user with local system access. This characteristic aligns with ATT&CK technique T1068 which describes local privilege escalation and system compromise through application-level vulnerabilities. The impact is further amplified in environments where database administrators frequently switch between multiple server connections, increasing the likelihood of exploitation during normal operational tasks.
Mitigation strategies for this vulnerability should prioritize immediate patching of the Valentina Studio application to the latest version that addresses the buffer overflow issue. System administrators should implement input validation controls at the application level and consider deploying application whitelisting policies to prevent unauthorized modifications to the software. Additionally, network segmentation and privilege separation can help limit the potential impact of exploitation by restricting local user access to critical systems. The vulnerability demonstrates the importance of proper memory management practices and input validation in preventing buffer overflow exploits, aligning with security best practices outlined in the OWASP Top Ten and NIST Cybersecurity Framework. Organizations should also conduct regular security assessments of their database administration tools to identify similar vulnerabilities that could compromise system integrity and availability.