bytedeco/javacpp

dll hijeck

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#818 创建于 2025年9月8日

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 (0 评论) (0 反应) (0 负责人)Java (4,279 star) (620 fork)batch import
enhancementhelp wanted

描述

Loader.java has a DLL hijacking risk at line 1832. When creating an FFmpegFrameGrabber object in ffmpeg within bytedec/javacv, it tries to load non-existent classes (avutil.class, swresample.class, avcodec.class, avformat.class, swscale.class, avdevice.class), resulting in a "dll not found" error.

贡献者指南

技术栈
javacpp
领域
security
议题类型
bug
难度面向新贡献者的预计实现难度，1 表示很小改动，5 表示专家级工作。
3
预计时间有经验贡献者完成调查、实现、测试并准备 pull request 的粗略时间范围。
1-3 hours
活动状态议题当前的可参与程度：新鲜、活跃、陈旧、阻塞或等待维护者输入。
fresh
清晰度议题是否清楚说明期望改动、验收标准和下一步。
clear
前置要求
Understanding of JNIJavaCV basics
新手友好度1-100 的估计分数，表示该议题对首次贡献者的友好程度。
35
研究方向
Examine the Loader.java file at line 1832 (or nearby) to understand the class loading mechanism for native libraries. The issue may involve improper validation of library paths or class names. Look for the specific code that tries to load classes like avutil.class and ensure proper error handling or path sanitization is in place. Also, review the FFmpegFrameGrabber initialization to see where these classes are referenced.
dll hijeck · bytedeco/javacpp#818 | Good First Issue