• Title/Summary/Keyword: PHP Server

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Detection of Potential Invalid Function Pointer Access Error based on Assembly Codes (어셈블리어 코드 기반의 Invalid Function Pointer Access Error 가능성 검출)

  • Kim, Hyun-Soo;Kim, Byeong-Man
    • Proceedings of the Korean Institute of Information and Commucation Sciences Conference
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    • 2010.05a
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    • pp.938-941
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    • 2010
  • Though a compiler checks memory errors, it is difficult for the compiler to detect function pointer errors in code level. Thus, in this paper, we propose a method for effectively detecting Invalid function pointer access errors, by analyzing assembly codes that are obtained by disassembling an executable file. To detect the errors, assembly codes in disassembled files are checked out based on the instruction transition diagrams which are constructed through analyzing normal usage patterns of function pointer access. When applying the proposed method to various programs having no compilation error, a total of about 500 potential errors including the ones of well-known open source programs such as Apache web server and PHP script interpreter are detected among 1 million lines of assembly codes corresponding to a total of about 10 thousand functions.

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