CVE-2021-29511: Memory over-allocation in evm crate

January 30, 2024

Prior to the patch, when executing specific EVM opcodes related to memory operations that use evm_core::Memory::copy_large, the crate can over-allocate memory when it is not needed, making it possible for an attacker to perform denial-of-service attack.

References

github.com/advisories/GHSA-4jwq-572w-4388
github.com/rust-blockchain/evm/commit/19ade858c430ab13eb562764a870ac9f8506f8dd
github.com/rust-blockchain/evm/security/advisories/GHSA-4jwq-572w-4388
nvd.nist.gov/vuln/detail/CVE-2021-29511

Code Behaviors & Features

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