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CVE-2022-29219— Integer Overflow in Lodestar

Quick assessment

Affected
ChainSafe lodestar
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.

Lodestar是一种以太坊共识的 TypeScript 实现。 Lodestar 0.36.0之前版本存在输入验证错误漏洞，该漏洞源于链上包含恶意制作的 AttesterSlashing 或 ProposerSlashing ，可能存在共识分裂。

CVSS 7.5 · High EPSS 1.34% · P71

Possible ATT&CK Techniques 1 AI

T1496 · Resource Hijacking
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I. Basic Information for CVE-2022-29219

Vulnerability Information
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Vulnerability Title
Integer Overflow in Lodestar
Source: CVE Program / CVE List V5
Vulnerability Description
Lodestar is a TypeScript implementation of the Ethereum Consensus specification. Prior to version 0.36.0, there is a possible consensus split given maliciously-crafted `AttesterSlashing` or `ProposerSlashing` being included on-chain. Because the developers represent `uint64` values as native javascript `number`s, there is an issue when those variables with large (greater than 2^53) `uint64` values are included on chain. In those cases, Lodestar may view valid_`AttesterSlashing` or `ProposerSlashing` as invalid, due to rounding errors in large `number` values. This causes a consensus split, where Lodestar nodes are forked away from the main network. Similarly, Lodestar may consider invalid `ProposerSlashing` as valid, thus including in proposed blocks that will be considered invalid by the network. Version 0.36.0 contains a fix for this issue. As a workaround, use `BigInt` to represent `Slot` and `Epoch` values in `AttesterSlashing` and `ProposerSlashing` objects. `BigInt` is too slow to be used in all `Slot` and `Epoch` cases, so one may carefully use `BigInt` just where necessary for consensus.
Source: CVE Program / CVE List V5
CVSS Information
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:H/A:N
Source: CVE Program / CVE List V5
Vulnerability Type
整数溢出或超界折返
Source: CVE Program / CVE List V5
Vulnerability Title
Lodestar 输入验证错误漏洞
Source: CNNVD (China National Vulnerability Database)
Vulnerability Description
Lodestar是一种以太坊共识的 TypeScript 实现。 Lodestar 0.36.0之前版本存在输入验证错误漏洞，该漏洞源于链上包含恶意制作的 AttesterSlashing 或 ProposerSlashing ，可能存在共识分裂。
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
ChainSafe lodestar < 0.36.0 -

II. Public POCs for CVE-2022-29219

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III. Intelligence Information for CVE-2022-29219

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Vendor Advisories for CVE-2022-29219 (1)

Other References for CVE-2022-29219 (1)

IV. Related Vulnerabilities

Same vendor: ChainSafe
Same weakness: CWE-190

V. Comments for CVE-2022-29219

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