CVE-2023-35704

Summary

CVE-2023-35704 is a critical vulnerability affecting GTKWave version 3.3.115. The issue involves multiple stack-based buffer overflows in the FST LEB128 varint functionality. A maliciously crafted .fst file can exploit these vulnerabilities, resulting in arbitrary code execution. This can only be triggered when a user opens a malicious file. Specifically, the fstReaderVarint32WithSkip function is the affected component.

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