CVE-2021-29511
Memory over-allocation in evm crate
- State
- Published
- Severity
- 6.5 Medium
- Published
- May 12, 2021
- Updated
- Aug 3, 2024
- Reserved
- Mar 30, 2021
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.
Scores
| CVSS | Score | Vector | Source |
|---|---|---|---|
| 3.1 | 6.5 Medium | CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H | GitHub_M |
Weaknesses
- CWE-770 {"CWE-770":"Allocation of Resources Without Limits or Throttling"}
Affected Products
| Product | Versions |
|---|---|
evmrust-blockchain |
|
References
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