CVE-2020-19765 : What You Need to Know

An issue in the noReentrance() modifier of the Ethereum-based contract Accounting 1.0 allows attackers to carry out a reentrancy attack.

Understanding CVE-2020-19765

This CVE involves a vulnerability in the noReentrance() modifier of an Ethereum-based contract, enabling attackers to execute a reentrancy attack.

What is CVE-2020-19765?

CVE-2020-19765 is a security vulnerability in the Accounting 1.0 contract's noReentrance() modifier, which permits malicious actors to conduct reentrancy attacks.

The Impact of CVE-2020-19765

The vulnerability can lead to unauthorized reentrancy attacks, potentially resulting in financial losses, data manipulation, or service disruption.

Technical Details of CVE-2020-19765

This section provides detailed technical insights into the CVE.

Vulnerability Description

The issue lies in the noReentrance() modifier of the Accounting 1.0 contract, allowing attackers to exploit reentrancy.

Affected Systems and Versions

Affected Product: Not applicable
Affected Vendor: Not applicable
Affected Version: Not applicable

Exploitation Mechanism

Attackers can abuse the vulnerability in the noReentrance() modifier to execute reentrancy attacks, potentially compromising the contract's integrity.

Mitigation and Prevention

Protective measures to address and prevent the CVE.

Immediate Steps to Take

Review and update the affected contract to fix the noReentrance() modifier vulnerability.
Implement secure coding practices to prevent reentrancy attacks in smart contracts.

Long-Term Security Practices

Conduct regular security audits and code reviews to identify and mitigate vulnerabilities in smart contracts.
Stay informed about emerging security threats and best practices in blockchain security.

Patching and Updates

Ensure timely application of patches and updates to address known vulnerabilities and enhance the security of smart contracts.