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The Security Risk of Lacking Compiler Protection in WebAssembly
Boekbijdrage - Boekhoofdstuk Conferentiebijdrage
WebAssembly is increasingly used as the compilation target for cross-platform applications.
In this paper, we investigate whether one can rely on the security measures enforced by existing C compilers when compiling C programs to WebAssembly.
We compiled 4,469 C programs with known buffer overflow vulnerabilities to x86 code and to WebAssembly, and observed the outcome of the execution of the generated code to differ for 1,088 programs.
Through manual inspection, we identified that the root cause for these is the lack of security measures such as stack canaries in the generated
WebAssembly: while x86 code crashes upon a stack-based buffer overflow,
the corresponding WebAssembly continues to be executed.
We conclude that compiling an existing C program to WebAssembly without additional precautions may hamper its security, and we encourage more research in this direction.
In this paper, we investigate whether one can rely on the security measures enforced by existing C compilers when compiling C programs to WebAssembly.
We compiled 4,469 C programs with known buffer overflow vulnerabilities to x86 code and to WebAssembly, and observed the outcome of the execution of the generated code to differ for 1,088 programs.
Through manual inspection, we identified that the root cause for these is the lack of security measures such as stack canaries in the generated
WebAssembly: while x86 code crashes upon a stack-based buffer overflow,
the corresponding WebAssembly continues to be executed.
We conclude that compiling an existing C program to WebAssembly without additional precautions may hamper its security, and we encourage more research in this direction.
Boek: Proceedings - 2021 21st International Conference on Software Quality, Reliability and Security, QRS 2021
Series: IEEE International Conference on Software Quality, Reliability and Security, QRS
Pagina's: 132-139
Aantal pagina's: 8
Jaar van publicatie:2021
Toegankelijkheid:Open