CornerCase automates extremal testing of protocol implementations by using LLMs to extract validity constraints from specs and generating boundary test cases, uncovering 42 anomalies (26 acknowledged as bugs) in HTTP, DNS, BGP, SMTP, and QUIC implementations.
Can Aygun, Yehuda Afek, Anat Bremler-Barr, and Leonard Kleinrock
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CornerCase: Automated Extremal Testing of Protocol Implementations using LLMs
CornerCase automates extremal testing of protocol implementations by using LLMs to extract validity constraints from specs and generating boundary test cases, uncovering 42 anomalies (26 acknowledged as bugs) in HTTP, DNS, BGP, SMTP, and QUIC implementations.