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Vulnerability Intelligence
Miggo AI
Miggo AIMiggo AI| Package Name | Ecosystem | Vulnerable Versions | First Patched Version |
|---|---|---|---|
| lz4-sys | rust | < 1.9.4 | 1.9.4 |
RustRustMiggo AIRoot Cause AnalysisThe critical vulnerability stems from an integer overflow in decompression handling. The patch in lz4.c modifies read_variable_length() to use fixed-width U32 types, explicitly addressing CVE-2021-3520's root cause. This function parses length fields during decompression - the exact location where malicious input would trigger overflow. The type change from unsigned to U32 (with added static assertion for 4-byte ints) proves the original code had platform-dependent integer sizing vulnerable to wrap-around. Runtime detection would see this function processing attacker-controlled compression payloads.
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