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CVE-2021-41153— Specification non-compliance in JUMPI

Quick assessment

Affected
rust-blockchain evm
Exploitation
No confirmed in-the-wild exploitation; assess based on exposure
Recommended action
Check the vendor advisory and references for a fixed version. If immediate upgrade is impossible, restrict exposure and increase monitoring.

evm crate是Rust Ethereum 虚拟机实现。 evm crate 存在安全漏洞，该漏洞源于 evm crate 中，JUMPI 操作码的条件在目的地有效性检查之后被检查。

CVSS 8.7 · High EPSS 1.03% · P61

Possible ATT&CK Techniques 1 AI

T1203 · Exploitation for Client Execution
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I. Basic Information for CVE-2021-41153

Vulnerability Information
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Vulnerability Title
Specification non-compliance in JUMPI
Source: CVE Program / CVE List V5
Vulnerability Description
The evm crate is a pure Rust implementation of Ethereum Virtual Machine. In `evm` crate `< 0.31.0`, `JUMPI` opcode's condition is checked after the destination validity check. However, according to Geth and OpenEthereum, the condition check should happen before the destination validity check. This is a **high** severity security advisory if you use `evm` crate for Ethereum mainnet. In this case, you should update your library dependency immediately to on or after `0.31.0`. This is a **low** severity security advisory if you use `evm` crate in Frontier or in a standalone blockchain, because there's no security exploit possible with this advisory. It is **not** recommended to update to on or after `0.31.0` until all the normal chain upgrade preparations have been done. If you use Frontier or other `pallet-evm` based Substrate blockchain, please ensure to update your `spec_version` before updating this. For other blockchains, please make sure to follow a hard-fork process before you update this.
Source: CVE Program / CVE List V5
CVSS Information
CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:C/C:H/I:H/A:N
Source: CVE Program / CVE List V5
Vulnerability Type
控制流实现总是不正确
Source: CVE Program / CVE List V5
Vulnerability Title
evm crate 安全漏洞
Source: CNNVD (China National Vulnerability Database)
Vulnerability Description
evm crate是Rust Ethereum 虚拟机实现。 evm crate 存在安全漏洞，该漏洞源于 evm crate 中，JUMPI 操作码的条件在目的地有效性检查之后被检查。
Source: CNNVD (China National Vulnerability Database)
CVSS Information
N/A
Source: CNNVD (China National Vulnerability Database)
Vulnerability Type
N/A
Source: CNNVD (China National Vulnerability Database)

Affected Products

Vendor Product Affected Versions CPE Subscribe
rust-blockchain evm < 0.31.0 -

II. Public POCs for CVE-2021-41153

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III. Intelligence Information for CVE-2021-41153

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Patches & Fixes for CVE-2021-41153 (1)

Vendor Advisories for CVE-2021-41153 (1)

IV. Related Vulnerabilities

Same product: evm
Same vendor: rust-blockchain
Same weakness: CWE-670

V. Comments for CVE-2021-41153

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