CVE-2021-25837 : Vulnerability Insights and Analysis
Ethermint in Cosmos Network up to v0.4.0 is vulnerable due to cache lifecycle inconsistency, enabling attacks like unauthorized token minting. Learn about impact, mitigation, and prevention.
Ethermint, a part of the Cosmos Network, is affected by a cache lifecycle inconsistency in the EVM module. This vulnerability allows for potential attacks like an "arbitrary mint token" due to improper memory reservation of storage changes caused by failed transactions.
Understanding CVE-2021-25837
This section will delve into the specifics of the vulnerability present in Cosmos Network Ethermint.
What is CVE-2021-25837?
CVE-2021-25837 highlights a cache lifecycle inconsistency in Ethermint, affecting versions up to v0.4.0. The issue arises from discrepancies between Storage caching and Transaction processing cycles.
The Impact of CVE-2021-25837
The vulnerability enables malicious actors to exploit bad storage cache data that persists in the current block. This can lead to serious risks, including unauthorized minting of tokens.
Technical Details of CVE-2021-25837
Let's explore the technical aspects of the vulnerability found in Cosmos Network Ethermint.
Vulnerability Description
The cache lifecycle inconsistency in the EVM module of Ethermint allows for the retention of storage changes from failed transactions, paving the way for various attacks.
Affected Systems and Versions
Ethermint versions equal to or below v0.4.0 are impacted by this vulnerability. Users of these versions should take immediate action.
Exploitation Mechanism
Attackers can leverage the improperly reserved storage changes to manipulate the current block's data, potentially enabling unauthorized token minting.
Mitigation and Prevention
Discover the steps to mitigate the risks associated with CVE-2021-25837.
Immediate Steps to Take
Users of affected versions should update to a secure iteration, apply patches, and monitor for any suspicious activities.
Long-Term Security Practices
Implementing robust security protocols and regularly updating systems can fortify defenses against similar vulnerabilities.
Patching and Updates
Stay informed about security patches released by Ethermint and promptly apply them to safeguard against known vulnerabilities.