CVE-2020-11979 : Exploit Details and Defense Strategies

Apache Ant 1.10.8 allows attackers to inject modified source files into the build process due to insecure temporary file handling.

Understanding CVE-2020-11979

Apache Ant 1.10.8 vulnerability with insecure temporary file handling.

What is CVE-2020-11979?

Apache Ant 1.10.8 changed temporary file permissions, but a task nullified the protection, enabling attackers to inject modified source files.

The Impact of CVE-2020-11979

The vulnerability allows attackers to manipulate source files in the build process, potentially leading to unauthorized code execution.

Technical Details of CVE-2020-11979

Details of the vulnerability in Apache Ant 1.10.8.

Vulnerability Description

Apache Ant 1.10.8's fixcrlf task deletes temporary files, creating new ones without proper protection, enabling source file injection.

Affected Systems and Versions

Product: Apache Ant
Version: Apache Ant 1.10.8

Exploitation Mechanism

Attackers can exploit the vulnerability by injecting modified source files into the build process, potentially compromising the system.

Mitigation and Prevention

Ways to mitigate and prevent the CVE-2020-11979 vulnerability.

Immediate Steps to Take

Update Apache Ant to version 1.10.8 or higher to address the insecure temporary file handling.
Regularly monitor and review temporary file permissions to prevent unauthorized access.

Long-Term Security Practices

Implement secure coding practices to avoid vulnerabilities related to temporary file handling.
Conduct regular security audits and penetration testing to identify and address potential security weaknesses.

Patching and Updates

Stay informed about security advisories and updates from Apache Ant to apply patches promptly and enhance system security.