CVE-2022-21685

Published on: 01/14/2022 12:00:00 AM UTC

Last Modified on: 01/14/2022 05:59:00 PM UTC

CVE-2022-21685 - advisory for GHSA-cjg2-2fjg-fph4

Source: Mitre Source: Nist Print: PDF PDF
CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H

Certain versions of Frontier from Paritytech contain the following vulnerability:

Frontier is Substrate's Ethereum compatibility layer. Prior to commit number `8a93fdc6c9f4eb1d2f2a11b7ff1d12d70bf5a664`, a bug in Frontier's MODEXP precompile implementation can cause an integer underflow in certain conditions. This will cause a node crash for debug builds. For release builds (and production WebAssembly binaries), the impact is limited as it can only cause a normal EVM out-of-gas. Users who do not use MODEXP precompile in their runtime are not impacted. A patch is available in pull request #549.

  • CVE-2022-21685 has been assigned by URL Logo [email protected] to track the vulnerability
  • Affected Vendor/Software: URL Logo paritytech - frontier version < 8a93fdc

CVE References

Description Tags Link
Handle 0 exponent with fudged length correctly in ModExp by notlesh · Pull Request #549 · paritytech/frontier · GitHub github.com
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URL Logo MISC github.com/paritytech/frontier/pull/549
Handle 0 exponent with fudged length correctly in ModExp (#549) · paritytech/[email protected] · GitHub github.com
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URL Logo MISC github.com/paritytech/frontier/commit/8a93fdc6c9f4eb1d2f2a11b7ff1d12d70bf5a664
Integer underflow in the MODEXP precompile · Advisory · paritytech/frontier · GitHub github.com
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URL Logo CONFIRM github.com/paritytech/frontier/security/advisories/GHSA-cjg2-2fjg-fph4

Known Affected Software

Vendor Product Version
Paritytech frontier < 8a93fdc

Social Mentions

Source Title Posted (UTC)
Twitter Icon @CVEreport CVE-2022-21685 : Frontier is Substrate's Ethereum compatibility layer. Prior to commit number `8a93fdc6c9f4eb1d2f2a… twitter.com/i/web/status/1… 2022-01-14 17:09:24
Reddit Logo Icon /r/netcve CVE-2022-21685 2022-01-14 17:38:29
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