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CVE-2022-31111

5.3 · MEDIUM

Frontier is Substrate's Ethereum compatibility layer.

Published Jul 6, 2022CWE-670EPSS 1.38%

Overview

CVE-2022-31111 is a medium-severity vulnerability. It was published on July 6, 2022 and has a CVSS 3.1 base score of 5.3 (MEDIUM).

This vulnerability has a CVSS 3.1 base score of 5.3, rated MEDIUM. It can be exploited remotely over the network. No authentication or special privileges are required for exploitation.

Technical description

Frontier is Substrate's Ethereum compatibility layer. In affected versions the truncation done when converting between EVM balance type and Substrate balance type was incorrectly implemented. This leads to possible discrepancy between appeared EVM transfer value and actual Substrate value transferred. It is recommended that an emergency upgrade to be planned and EVM execution temporarily paused in the mean time. The issue is patched in Frontier master branch commit fed5e0a9577c10bea021721e8c2c5c378e16bf66 and polkadot-v0.9.22 branch commit e3e427fa2e5d1200a784679f8015d4774cedc934. This vulnerability affects only EVM internal states, but not Substrate balance states or node. You can temporarily pause EVM execution (by setting up a Substrate `CallFilter` that disables `pallet-evm` and `pallet-ethereum` calls before the patch can be applied.

Remediation

Check the references section for vendor advisories, patches, and mitigation guidance. If immediate patching is not possible, review the CVSS vector to understand the attack surface and apply compensating controls such as network segmentation or access restrictions.

References

GitHubgithub.com/paritytech/frontier/commit/e3e427fa2e5d1200a784679f8015d4774cedc934GitHubgithub.com/paritytech/frontier/commit/fed5e0a9577c10bea021721e8c2c5c378e16bf66GitHubgithub.com/paritytech/frontier/pull/753GitHubgithub.com/paritytech/frontier/security/advisories/GHSA-hc8w-mx86-9fcjGitHubgithub.com/paritytech/frontier/commit/e3e427fa2e5d1200a784679f8015d4774cedc934GitHubgithub.com/paritytech/frontier/commit/fed5e0a9577c10bea021721e8c2c5c378e16bf66GitHubgithub.com/paritytech/frontier/pull/753GitHubgithub.com/paritytech/frontier/security/advisories/GHSA-hc8w-mx86-9fcj

How CyberStrike helps

Frequently asked questions

What is CVE-2022-31111?

CVE-2022-31111 is a medium-severity vulnerability. It was published on July 6, 2022 and has a CVSS 3.1 base score of 5.3 (MEDIUM).

How severe is CVE-2022-31111?

This vulnerability has a CVSS 3.1 base score of 5.3, rated MEDIUM. It can be exploited remotely over the network. No authentication or special privileges are required for exploitation.

How do I fix or remediate CVE-2022-31111?

Check the references section for vendor advisories, patches, and mitigation guidance. If immediate patching is not possible, review the CVSS vector to understand the attack surface and apply compensating controls such as network segmentation or access restrictions.

How can CyberStrike help with CVE-2022-31111?

CyberStrike is an open-source, AI-augmented pentesting engine. Rather than flag a version number, it tests whether an issue like CVE-2022-31111 is actually reachable in your own applications and APIs, then verifies each finding before reporting it. That tells you if the weakness is a real, exploitable risk in your environment or a false positive you can safely deprioritize.

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