Read the docs
TI-2021-19645 Aliases CVE-2021-43839GHSA-f854-hpxv-cw9r

Drainage of FeeCollector's Block Transaction Fees

Priority LOW 36CWE-670Published · Updated

Key facts

Attack vector
Network
Privileges required
None
User interaction
None
Attack complexity
Low
Impact type
—
Confidentiality · integrity · availability
None · High · None
Fix status
Fixed

Attack profile from CVSS 3.1 · CNA. Fix status from CNA and GitHub.

Summary

Cronos is a commercial implementation of a blockchain. In Cronos nodes running versions before v0.6.5, it is possible to take transaction fees from Cosmos SDK's FeeCollector for the current block by sending a custom crafted MsgEthereumTx. This problem has been patched in Cronos v0.6.5. There are no tested workarounds. All validator node operators are recommended to upgrade to Cronos v0.6.5 at their earliest possible convenience.

Why it matters now

EPSS 0.01356 71st percentileScored 2026-11-07
Fix Fixed cronos (crypto-org-chain): 0.6.5github.com/crypto-org-chain/cronos (Go): 0.6.5+1 more product

SSVC decision points

Not available: CISA has not published SSVC decision points for this record.

Affected products

VendorProductAffected versionsFixed inStatusSource
crypto-org-chaincronosbefore 0.6.50.6.5Patch availableCNA
—github.com/crypto-org-chain/cronos (Go)before 0.6.50.6.5Patch availableGHSA-f854-hpxv-cw9r
—github.com/tharsis/ethermint (Go)0.8.0 to before 0.10.00.10.0Patch availableGHSA-f854-hpxv-cw9r
—github.com/tharsis/evmos (Go)up to 0.4.2—No fix listedGHSA-f854-hpxv-cw9r
—github.com/tharsis/ethermint (Go)before 0.7.30.7.3Patch availableGHSA-f854-hpxv-cw9r
  • cronos Vendorcrypto-org-chain Affected before 0.6.5 Fixed in 0.6.5 Patch available CNA
  • github.com/crypto-org-chain/cronos (Go) Vendor— Affected before 0.6.5 Fixed in 0.6.5 Patch available GHSA-f854-hpxv-cw9r
  • github.com/tharsis/ethermint (Go) Vendor— Affected 0.8.0 to before 0.10.0 Fixed in 0.10.0 Patch available GHSA-f854-hpxv-cw9r
  • github.com/tharsis/evmos (Go) Vendor— Affected up to 0.4.2 Fixed in — No fix listed GHSA-f854-hpxv-cw9r
  • github.com/tharsis/ethermint (Go) Vendor— Affected before 0.7.3 Fixed in 0.7.3 Patch available GHSA-f854-hpxv-cw9r

CPE configurations NVD · 3

CPEVersionsRoleVendor
cpe:2.3:a:crypto:cronos:*:*:*:*:*:*:*:*before 0.6.5VulnerableCrypto
cpe:2.3:a:crypto:ethermint:*:*:*:*:*:*:*:*before 0.7.3; 0.8.0 – 0.9.0VulnerableCrypto
cpe:2.3:a:crypto:evmos:*:*:*:*:*:*:*:*up to 0.4.2VulnerableCrypto
  • cpe:2.3:a:crypto:cronos:*:*:*:*:*:*:*:* Versions before 0.6.5 Vulnerable ·Crypto
  • cpe:2.3:a:crypto:ethermint:*:*:*:*:*:*:*:* Versions before 0.7.3; 0.8.0 – 0.9.0 Vulnerable ·Crypto
  • cpe:2.3:a:crypto:evmos:*:*:*:*:*:*:*:* Versions up to 0.4.2 Vulnerable ·Crypto

Remediation

  • Fix · CNA cronos (crypto-org-chain) Fixed in 0.6.5
  • Fix · GHSA-f854-hpxv-cw9r github.com/crypto-org-chain/cronos (Go) Fixed in 0.6.5 Advisory →
  • Fix · GHSA-f854-hpxv-cw9r github.com/tharsis/ethermint (Go) Fixed in 0.10.0 Advisory →
  • Fix · GHSA-f854-hpxv-cw9r github.com/tharsis/ethermint (Go) Fixed in 0.7.3 Advisory →

Timeline

  1. 2026-10-02 Threatist record created from CVE-2021-43839
  2. 2026-10-03 Alias added: GHSA-f854-hpxv-cw9r

References

Patch 2

Advisory 2

Other 1

  • TI-2022-16363 Ethermint DoS through Unintended Contract Selfdestruct CVSS 3.1HIGH 8.2

Sources

This product uses the NVD API but is not endorsed or certified by the NVD. Sources and licences