CVE-2021-38196: Remote code execution in better-macro

August 25, 2021

An issue was discovered in the better-macro crate through 2021-07-22 for Rust. It intentionally demonstrates that remote attackers can execute arbitrary code via proc-macros, and otherwise has no legitimate purpose.

References

github.com/advisories/GHSA-79wf-qcqv-r22r
github.com/raycar5/better-macro
github.com/raycar5/better-macro/blob/24ff1702397b9c19bbfa4c660e2316cd77d3b900/src/lib.rs
nvd.nist.gov/vuln/detail/CVE-2021-38196
rustsec.org/advisories/RUSTSEC-2021-0077.html

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