CVE-2021-43839

Drainage of FeeCollector's Block Transaction Fees

Description

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.

Category

7.5
CVSS
Severity: High
CVSS 3.1 •
CVSS 2.0 •
EPSS 0.27%
Third-Party Advisory github.com Third-Party Advisory github.com Third-Party Advisory github.com
Affected: crypto-org-chain cronos
Published at:
Updated at:

References

Link Tags
https://github.com/crypto-org-chain/cronos/security/advisories/GHSA-f854-hpxv-cw9r third party advisory
https://github.com/crypto-org-chain/cronos/pull/270 third party advisory patch
https://github.com/crypto-org-chain/cronos/commit/150ef237b37ac28c8136e1c0f494932860b9ebe8 third party advisory patch

Frequently Asked Questions

What is the severity of CVE-2021-43839?
CVE-2021-43839 has been scored as a high severity vulnerability.
How to fix CVE-2021-43839?
To fix CVE-2021-43839, make sure you are using an up-to-date version of the affected component(s) by checking the vendor release notes. As for now, there are no other specific guidelines available.
Is CVE-2021-43839 being actively exploited in the wild?
As for now, there are no information to confirm that CVE-2021-43839 is being actively exploited. According to its EPSS score, there is a ~0% probability that this vulnerability will be exploited by malicious actors in the next 30 days.
What software or system is affected by CVE-2021-43839?
CVE-2021-43839 affects crypto-org-chain cronos.
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