CVE-2019-10776 Explained : Impact and Mitigation

A vulnerability in git-diff-apply prior to version 0.22.2 allows for command injection through a user-controlled variable.

Understanding CVE-2019-10776

This CVE involves a command injection vulnerability in git-diff-apply versions before 0.22.2.

What is CVE-2019-10776?

The vulnerability arises from the execution of a user-controlled variable in the "index.js" file, impacting all versions of git-diff-apply prior to 0.22.2.

The Impact of CVE-2019-10776

The vulnerability allows an attacker to inject and execute arbitrary commands through the remoteUrl variable, potentially leading to unauthorized access or data manipulation.

Technical Details of CVE-2019-10776

This section delves into the technical aspects of the vulnerability.

Vulnerability Description

The vulnerability occurs in the run command in the "index.js" file, where the git command is executed using a user-controlled variable named remoteUrl.

Affected Systems and Versions

All versions of git-diff-apply released before version 0.22.2 are affected by this vulnerability.

Exploitation Mechanism

By manipulating the remoteUrl variable, an attacker can inject malicious commands, leading to unauthorized actions within the system.

Mitigation and Prevention

Protecting systems from CVE-2019-10776 requires immediate actions and long-term security practices.

Immediate Steps to Take

Update git-diff-apply to version 0.22.2 or newer to mitigate the vulnerability.
Avoid executing commands from user-controlled inputs to prevent command injections.

Long-Term Security Practices

Implement input validation to sanitize user inputs and prevent command injections.
Regularly monitor and audit system commands for unusual activities.

Patching and Updates

Regularly check for security updates and patches for git-diff-apply to address known vulnerabilities.