PT-2021-22448 · Unknown+3 · Pallet-Ethereum+3

Lowsorpaas · Published 2021-09-01 · Updated 2023-07-17 · CVE-2021-39193

Positive Technologies (AI Summary)

CVSS v3.1

5.3

Medium

Base vector

AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:L/A:N

Name of the Vulnerable Software and Affected Versions Frontier versions prior to commit 0b962f218f0cdd796dadfe26c3f09e68f7861b26

Description A bug in pallet-ethereum can cause invalid transactions to be included in the Ethereum block state due to not validating the input data size. Any invalid transactions included this way have no possibility to alter the internal Ethereum or Substrate state. The transaction will appear to have been included, but is of no effect as it is rejected by the EVM engine. The impact is further limited by Substrate extrinsic size constraints.

Recommendations Apply the patch available in commit number 0b962f218f0cdd796dadfe26c3f09e68f7861b26 to resolve the issue. As a temporary workaround, consider restricting the use of the pallet-ethereum until a patch is applied.

Fix

RCE

Weakness Enumeration

CWE-20

CWE-1284

Related Identifiers

CVE-2021-39193

GHSA-HW4V-5X4H-C3XM

Affected Products

Ethereum

Frontier

Substrate

Pallet-Ethereum

References · 12

• https://github.com/paritytech/frontier/security/advisories/GHSA-hw4v-5x4h-c3xm · Patch
• https://github.com/paritytech/frontier/commit/0b962f218f0cdd796dadfe26c3f09e68f7861b26 · Patch
• https://github.com/paritytech/frontier/pull/465/commits/8a2b890a2fb477d5fedd0e4335b00623832849ae · Patch
• https://github.com/paritytech/frontier/pull/465 · Patch
• https://nvd.nist.gov/vuln/detail/CVE-2021-39193 · Security Note
• https://osv.dev/vulnerability/GHSA-hw4v-5x4h-c3xm · Vendor Advisory
• https://osv.dev/vulnerability/CVE-2021-39193 · Vendor Advisory
• https://github.com/paritytech/frontier/commit/dd112e · Note
• https://github.com/polkadot-evm/frontier · Note
• https://t.me/cvenotify/54482 · Telegram Post
• https://t.me/cvenotify/20648 · Telegram Post
• https://t.me/cvenotify/20716 · Telegram Post