CVEvulnerability

CVE-2021-29511

6.5 MEDIUM Published 2021-05-12 Modified 2026-06-17 Official page ↗
Status
Modified
Published
2021-05-12
Last modified
2026-06-17
Assigner
[email protected]
CVSS 3.1 ([email protected])
6.5 MEDIUM — CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H
CVSS 3.1 ([email protected])
6.5 MEDIUM — CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H
CVSS 2.0 ([email protected])
4.0 MEDIUM — AV:N/AC:L/Au:S/C:N/I:N/A:P
Weaknesses
CWE-770, CWE-787

Description

evm is a pure Rust implementation of Ethereum Virtual Machine. Prior to the patch, when executing specific EVM opcodes related to memory operations that use `evm_core::Memory::copy_large`, the `evm` 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`. Users should upgrade to `==0.21.1, ==0.23.1, ==0.24.1, ==0.25.1, >=0.26.1`. There are no workarounds. Please upgrade your `evm` crate version.

Affected configurations

• evm project evm (<= 0.21.0) • evm project evm 0.22.0 • evm project evm 0.23.0 • evm project evm 0.24.0 • evm project evm 0.25.0 • evm project evm 0.26.0

Related

Weakness · CWE (2)

  • CWE-770 Allocation of Resources Without Limits or Throttling weakness
  • CWE-787 Out-of-bounds Write weakness

References