CVE-2021-29511

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.

CVSS v3.0 6.5 MEDIUM
CVSS v2.0 4.0 MEDIUM

6.5^/10

CVSS v3.0 : MEDIUM

Vector :

Exploitability : 2.8 / Impact : 3.6

Attack Vector NETWORK

Attack Complexity LOW

Privileges Required LOW

User Interaction NONE

Confidentiality Impact NONE

Integrity Impact NONE

Availability Impact HIGH

Scope UNCHANGED

4.0^/10

CVSS v2.0 : MEDIUM

Vector : AV:N/AC:L/Au:S/C:N/I:N/A:P

Exploitability : 8.0 / Impact : 2.9

Access Vector NETWORK

Access Complexity LOW

Authentication SINGLE

Confidentiality Impact NONE

Integrity Impact NONE

Availability Impact PARTIAL

References

Link	Resource
https://github.com/rust-blockchain/evm/commit/19ade858c430ab13eb562764a870ac9f8506f8dd	Patch Third Party Advisory
https://github.com/rust-blockchain/evm/security/advisories/GHSA-4jwq-572w-4388	Patch Third Party Advisory
https://crates.io/crates/evm	Third Party Advisory

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Configurations

Configuration 1 (hide)

OR	cpe:2.3:a:evm_project:evm:0.22.0:::::rust::
	cpe:2.3:a:evm_project:evm:0.23.0:::::rust::
	cpe:2.3:a:evm_project:evm:0.24.0:::::rust::
	cpe:2.3:a:evm_project:evm:0.25.0:::::rust::
	cpe:2.3:a:evm_project:evm:0.26.0:::::rust::
	cpe:2.3:a:evm_project:evm::::::rust::*

Information

Published : 2021-05-12 11:15

Updated : 2022-10-25 12:13

NVD link : CVE-2021-29511

Mitre link : CVE-2021-29511

JSON object : View

CWE

CWE-787

Out-of-bounds Write

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Products Affected

evm_project

evm

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