CVE-2021-29511
Last modified
CVE-2021-29511 is a medium-severity vulnerability rated 6.5/10 on the CVSS scale. 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. EPSS estimates a 1.28% chance of exploitation in the next 30 days.
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.
Metrics
CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H
Weakness Enumeration
Affected Software
| Vendor | Product | Versions |
|---|---|---|
| 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 |
References
- https://crates.io/crates/evmThird Party Advisory
- https://github.com/rust-blockchain/evm/commit/19ade858c430ab13eb562764a870ac9f8506f8ddPatch, Third Party Advisory
- https://github.com/rust-blockchain/evm/security/advisories/GHSA-4jwq-572w-4388Patch, Third Party Advisory
- https://crates.io/crates/evmThird Party Advisory
- https://github.com/rust-blockchain/evm/commit/19ade858c430ab13eb562764a870ac9f8506f8ddPatch, Third Party Advisory
- https://github.com/rust-blockchain/evm/security/advisories/GHSA-4jwq-572w-4388Patch, Third Party Advisory
Timeline
- Published
- Last Modified
- Status
- Modified
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