RUSTSEC-2021-0066

Denial of service on EVM execution due to memory over-allocation

Issued
Package
evm-core (crates.io)
Type
Vulnerability
Categories
  • denial-of-service
Details
https://github.com/rust-blockchain/evm
Patched
  • >=0.26.1
  • >=0.25.1, <0.26.0
  • >=0.24.1, <0.25.0
  • >=0.23.1, <0.24.0
  • >=0.21.1, <0.22.0

Description

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.

The flaw was corrected in commit 19ade85.

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