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CVE-2021-29511

Memory over-allocation in evm crate

Published: May 12, 2021Updated: Nov 21, 2024 Sources: CVE List NVD GHSACWE-770
6.5MEDIUM
NVD MITRE
EPSS Score
1.3%
Top 33.0%
CISA KEV
Not in KEV
Exploits
No Known Exploits
Remediation
Patch Available
Self-Check
Not available

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.

No summary for this CVE yet.

CVSS Vector Breakdown

AV:NAC:LPR:LUI:NS:UC:NI:NA:H
Exploitability
AV:NAttack Vector
Network
AC:LAttack Complexity
Low
PR:LPrivileges Required
Low
UI:NUser Interaction
None
Scope
S:UScope
Unchanged
Impact
C:NConfidentiality
None
I:NIntegrity
None
A:HAvailability
High
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Weaknesses

CWE-770CWE-787

Affected Products

crates.io
package-ecosystem
evm
OSS Libraries
evm-core
OSS Libraries
evm project
oss-projectaka evm
evm
OSS Libraries / generic-library
rust-blockchain
oss-project
evmOn-prem
OSS Libraries / generic-library

Exploitability

Official Patch Available

Attack Graph

Products CVE Techniques Tactics

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MITRE ATT&CK

3 techniques
Impact
Initial Access
Privilege Escalation
View detailed technique mapping

References

https://crates.io/crates/evm
crates.io
https://github.com/rust-blockchain/evm/commit/19ade858c430ab13eb562764a870ac9f8506f8dd
github.com
https://github.com/rust-blockchain/evm/security/advisories/GHSA-4jwq-572w-4388
github.com
and 1 more references View all →

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