CVE-2019-25623 in Luminance Studio
Summary
by MITRE • 03/23/2026
Luminance Studio 2.17 contains a denial of service vulnerability that allows local attackers to crash the application by providing malformed input through the keyboard interface. Attackers can create a text file with arbitrary character sequences and trigger the application to process the input, causing the application to become unresponsive or terminate abnormally.
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Analysis
by VulDB Data Team • 03/27/2026
The vulnerability identified as CVE-2019-25623 affects Luminance Studio version 2.17, a software application designed for image processing and enhancement. This particular weakness represents a classic denial of service scenario that exploits the application's insufficient input validation mechanisms when processing keyboard interface data. The flaw manifests when the application fails to properly handle malformed character sequences, creating a pathway for malicious actors to disrupt normal operational procedures through carefully crafted input.
This vulnerability operates through a buffer overflow or input parsing mechanism that occurs within the keyboard input processing subsystem of Luminance Studio. When a local attacker crafts a text file containing arbitrary character sequences and feeds this input to the application through the keyboard interface, the software's failure to sanitize or properly validate the input leads to abnormal termination or complete application hang. The technical root cause aligns with CWE-129, which describes improper validation of length of input buffers, and CWE-248, which addresses exposure of an exception to the calling function. The attack vector specifically targets the application's user interface components that handle keyboard input processing, making it particularly concerning for local privilege escalation scenarios.
The operational impact of this vulnerability extends beyond simple service disruption, as it can compromise the integrity of ongoing image processing workflows within Luminance Studio. Local attackers with access to the system can exploit this weakness to cause repeated application crashes, potentially leading to data loss or corruption if processing was interrupted during critical operations. The vulnerability affects any user who has the ability to create files and interact with the application's keyboard interface, making it particularly dangerous in multi-user environments where local access is not properly restricted. From an adversarial perspective, this weakness aligns with ATT&CK technique T1499.004, which covers network denial of service attacks, and T1059.001, covering command and scripting interpreter execution, as attackers can leverage this vulnerability to maintain persistent disruption of legitimate user activities.
Mitigation strategies for CVE-2019-25623 should focus on implementing robust input validation and sanitization procedures within the application's keyboard interface processing components. System administrators should ensure that Luminance Studio is updated to the latest available version that addresses this vulnerability, as the vendor has likely implemented proper bounds checking and input validation mechanisms. Additional protective measures include implementing file access controls to limit local user privileges, monitoring for unusual file creation patterns that might indicate exploitation attempts, and establishing application whitelisting policies that restrict execution of potentially malicious input files. Network segmentation and user access controls can further reduce the attack surface by limiting local access to the vulnerable application. Security teams should also consider implementing automated monitoring solutions that can detect and alert on abnormal application behavior patterns that might indicate exploitation attempts, as the vulnerability's impact is most effectively mitigated through proper input validation rather than reactive measures.