CVE-2017-0918 : Security Advisory and Response

Gitlab Community Edition version 10.3 is vulnerable to a path traversal issue in the GitLab CI runner component, allowing remote code execution.

Understanding CVE-2017-0918

The vulnerability in GitLab Community Edition version 10.3 poses a risk of remote code execution due to a path traversal issue in the GitLab CI runner component.

What is CVE-2017-0918?

The GitLab Community Edition version 10.3 contains a security flaw that enables path traversal within the GitLab CI runner, potentially leading to the execution of remote code.

The Impact of CVE-2017-0918

Exploiting this vulnerability could allow malicious actors to execute arbitrary remote code on affected systems, leading to unauthorized access and potential data breaches.

Technical Details of CVE-2017-0918

The technical aspects of the CVE-2017-0918 vulnerability in GitLab Community Edition version 10.3.

Vulnerability Description

The vulnerability allows for path traversal in the GitLab CI runner component, enabling remote code execution.

Affected Systems and Versions

Product: GitLab Community and Enterprise Editions
Vendor: GitLab
Affected Versions: 8.4.0 - 10.1.5 (Fixed in 10.1.6), 10.2.0 - 10.2.5 (Fixed in 10.2.6), 10.3.0 - 10.3.3 (Fixed in 10.3.4)

Exploitation Mechanism

The vulnerability can be exploited by manipulating paths within the GitLab CI runner component to execute remote code.

Mitigation and Prevention

Steps to mitigate and prevent the CVE-2017-0918 vulnerability in GitLab Community Edition version 10.3.

Immediate Steps to Take

Update GitLab to the fixed versions: 10.1.6, 10.2.6, 10.3.4
Monitor for any unauthorized access or unusual activities on the system.

Long-Term Security Practices

Regularly update and patch GitLab installations to address security vulnerabilities.
Implement access controls and restrictions to limit exposure to potential threats.

Patching and Updates

Apply the provided patches or updates from GitLab to ensure the vulnerability is remediated.