CVE-2018-25278 Overview
CVE-2018-25278 is a buffer overflow vulnerability affecting PicaJet FX version 2.6.5. This denial of service vulnerability allows local attackers to crash the application by submitting oversized input to registration fields. Specifically, attackers can paste a 6000-byte buffer into the Registration Name and Registration Key fields via the Help menu's Register PicaJet dialog to trigger an application crash.
Critical Impact
Local attackers can cause application crashes through buffer overflow in registration fields, resulting in denial of service and potential data loss for users with unsaved work.
Affected Products
- PicaJet FX 2.6.5
Discovery Timeline
- 2026-04-26 - CVE-2018-25278 published to NVD
- 2026-04-27 - Last updated in NVD database
Technical Details for CVE-2018-25278
Vulnerability Analysis
This vulnerability is classified as CWE-120 (Buffer Copy without Checking Size of Input), commonly known as a classic buffer overflow. The application fails to properly validate the length of user input before copying it into fixed-size memory buffers used for registration data processing.
When a user accesses the registration dialog through the Help menu and enters data into the Registration Name or Registration Key fields, the application expects typical registration strings of reasonable length. However, the input handling routines do not enforce proper boundary checks, allowing attackers to supply input that exceeds the allocated buffer capacity.
The local attack vector means that an attacker must have access to the system where PicaJet FX is installed. While this limits the exposure compared to remotely exploitable vulnerabilities, it still poses a risk in shared computing environments or scenarios where malicious actors have user-level access.
Root Cause
The root cause of CVE-2018-25278 is improper input validation in the registration dialog handler. The application allocates fixed-size buffers for the Registration Name and Registration Key fields but does not implement length checks before copying user-supplied data into these buffers. When input exceeding approximately 6000 bytes is submitted, the buffer overflow corrupts adjacent memory, leading to application instability and crash.
Attack Vector
The attack requires local access to a system with PicaJet FX 2.6.5 installed. An attacker navigates to the Help menu, selects the "Register PicaJet" option, and pastes a specially crafted oversized string (approximately 6000 bytes) into either the Registration Name or Registration Key input field. Upon submission or field processing, the buffer overflow is triggered, causing the application to crash.
The vulnerability mechanism works as follows: the registration dialog accepts arbitrary-length input from the clipboard or keyboard, but the underlying buffer can only accommodate a limited number of characters. When the input exceeds this limit, memory beyond the buffer boundary is overwritten, corrupting application state and leading to an unhandled exception or access violation that terminates the process.
Technical details and proof-of-concept information can be found in the Exploit-DB #45383 entry and the VulnCheck Advisory on Picajet FX.
Detection Methods for CVE-2018-25278
Indicators of Compromise
- Unexpected PicaJet FX application crashes with access violation or buffer overflow errors
- Windows Event Log entries showing application faults for PicaJet.exe or related processes
- Crash dump files indicating memory corruption in registration-related modules
Detection Strategies
- Monitor for abnormal application termination events associated with PicaJet FX processes
- Implement endpoint detection rules to identify applications receiving unusually large clipboard paste operations
- Review application stability logs for patterns of repeated crashes during registration attempts
Monitoring Recommendations
- Enable Windows Error Reporting to capture crash details for forensic analysis
- Deploy endpoint monitoring solutions to detect anomalous application behavior
- Monitor user activity in shared environments where PicaJet FX is deployed
How to Mitigate CVE-2018-25278
Immediate Actions Required
- Restrict access to systems running PicaJet FX 2.6.5 to trusted users only
- Consider discontinuing use of PicaJet FX if no security patches are available from the vendor
- Implement application whitelisting to prevent unauthorized execution in enterprise environments
- Evaluate alternative photo management software with active security support
Patch Information
No vendor patches have been identified in the available CVE data. PicaJet FX appears to be legacy software without active security maintenance. Organizations should assess the risk of continued use and consider migration to supported alternatives.
For additional technical details, refer to:
Workarounds
- Restrict access to the Help menu or registration functionality if possible through group policy or application configuration
- Run PicaJet FX in a sandboxed or isolated environment to limit impact of crashes
- Ensure regular saves of work to minimize data loss in the event of application crashes
- Limit clipboard functionality in high-security environments where PicaJet FX must be used
Disclaimer: This content was generated using AI. While we strive for accuracy, please verify critical information with official sources.
