CVE-2023-30623 : Security Advisory and Response

This article provides insights into CVE-2023-30623, a vulnerability related to an arbitrary command injection in embano1/wip GitHub Action.

Understanding CVE-2023-30623

CVE-2023-30623 highlights a security flaw in the

embano1/wip

GitHub Action, allowing arbitrary command injection prior to version 2.

What is CVE-2023-30623?

The vulnerability arises from the insecure usage of the

github.event.pull_request.title

parameter, leading to a command injection risk that can be exploited by GitHub users.

The Impact of CVE-2023-30623

Exploiting this vulnerability enables unauthorized users to execute arbitrary code on GitHub runners and potentially access sensitive information stored in CI pipelines, including repository tokens.

Technical Details of CVE-2023-30623

The vulnerability in

embano1/wip

GitHub Action is classified under CWE-77. The CVSS v3.1 score for this vulnerability is 8.8, indicating a high severity level with significant impacts on confidentiality, integrity, and availability.

Vulnerability Description

Prior to version 2, the

embano1/wip

action uses the

github.event.pull_request.title

parameter insecurely, leading to a command injection vulnerability through string interpolation.

Affected Systems and Versions

The vulnerability affects

embano1/wip

Action versions prior to version 2.

Exploitation Mechanism

By submitting a pull request with a malicious commit message, attackers can exploit the command injection vulnerability to execute unauthorized code and potentially access sensitive data.

Mitigation and Prevention

To address CVE-2023-30623, immediate steps should be taken to secure GitHub Actions and prevent potential exploitation.

Immediate Steps to Take

GitHub users should upgrade to version 2 of the

embano1/wip

Action to mitigate the command injection vulnerability and enhance the security of their CI/CD pipelines.

Long-Term Security Practices

Implement secure coding practices, input validation mechanisms, and regular security audits to proactively identify and address similar vulnerabilities in GitHub Actions.

Patching and Updates

Regularly monitor for security advisories and updates from GitHub Action providers to stay informed about security patches and best practices in securing CI/CD workflows.