CVE-2022-31111
What it is
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.
At a glance
- Exploitability
- Can be exploited over the network without logging in. Limited direct impact.
- Exploit odds
- 1.4% chance of exploitation in the next 30 days (EPSS).
- Fix
- A patch, advisory or fixed version is referenced. Upgrade or apply it.
Timeline
- PublishedDisclosed publicly on CVE.org and NVD
- Last updatedMost recent change to the record
Why it ranks here
- Exploited in the wild: no, CISA does not list it.
- Exploit odds: 1.4% in the next 30 days (EPSS).
- Severity: 5.3 MEDIUM (CVSS).
- Fix: a patch or advisory is linked.
Details
- Published
- Last modified
- Exploit probability
- 1.4% · EPSS, next 30 days
- Weakness
- CWE-670
- Record status
- Modified
Affected
- Parity Frontier
Attack profile CVSS 3.1 · 5.3
- Attack vector
- Network
- Complexity
- Low
- Privileges needed
- None
- User interaction
- None
- Scope
- Unchanged
- Confidentiality
- None
- Integrity
- Low
- Availability
- None
Raw vector
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:L/A:N
Is it in your code?
Hand this to your coding agent. It searches your project for the affected products and checks versions. Nothing leaves your machine.
Read https://cve-list.com/agent/cve/CVE-2022-31111.md and follow it. Check whether this project is affected by CVE-2022-31111. Read only. Don't change anything and don't upload my code. Tell me yes, no or not sure, with the file as proof.
Fix and advisories
- https://github.com/paritytech/frontier/commit/e3e427fa2e5d1200a784679f8015d4774cedc934
- https://github.com/paritytech/frontier/commit/fed5e0a9577c10bea021721e8c2c5c378e16bf66
- https://github.com/paritytech/frontier/pull/753
- https://github.com/paritytech/frontier/security/advisories/GHSA-hc8w-mx86-9fcj
- https://github.com/paritytech/frontier/commit/e3e427fa2e5d1200a784679f8015d4774cedc934
- https://github.com/paritytech/frontier/commit/fed5e0a9577c10bea021721e8c2c5c378e16bf66
- https://github.com/paritytech/frontier/pull/753
- https://github.com/paritytech/frontier/security/advisories/GHSA-hc8w-mx86-9fcj
References
- https://github.com/paritytech/frontier/commit/e3e427fa2e5d1200a784679f8015d4774cedc934
- https://github.com/paritytech/frontier/commit/fed5e0a9577c10bea021721e8c2c5c378e16bf66
- https://github.com/paritytech/frontier/pull/753
- https://github.com/paritytech/frontier/security/advisories/GHSA-hc8w-mx86-9fcj
- https://github.com/paritytech/frontier/commit/e3e427fa2e5d1200a784679f8015d4774cedc934
- https://github.com/paritytech/frontier/commit/fed5e0a9577c10bea021721e8c2c5c378e16bf66
- https://github.com/paritytech/frontier/pull/753
- https://github.com/paritytech/frontier/security/advisories/GHSA-hc8w-mx86-9fcj