Security vulnerabilities found in a small Go-based WASM runtime by AI agents
By
ziggy42
An everything bagel for the brain. Substantive, layered, well-seasoned.
Summary
The author describes building Epsilon, a small WebAssembly (WASM) runtime written in Go that serves as a pure instruction interpreter (~11k lines of code) without JIT compilation. The runtime is designed to be embeddable and provide a sandbox for untrusted code. The article explores how many security vulnerabilities AI agents could find in this WASM runtime, given its extensive testing against the official WASM testsuite.
Key quotes
· 4 pulledLast year I wrote a small WASM runtime in Go, Epsilon.
As far as runtimes go, this is a pretty simple one: no JIT, just a pure instruction interpreter in ~11k lines of code.
It is also very extensively tested against the official WASM testsuite.
Epsilon is designed to be embeddable in other applications and provide a sandbox for potentially untrusted code.
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