CVE-2017-8386 Explained : Impact and Mitigation

In versions of git prior to 2.4.12, 2.5.x to 2.5.6, 2.6.x to 2.6.7, 2.7.x to 2.7.5, 2.8.x to 2.8.5, 2.9.x to 2.9.4, 2.10.x to 2.10.3, 2.11.x to 2.11.2, and 2.12.x to 2.12.3, a security vulnerability exists in git-shell. This flaw could be exploited by remote authenticated users to gain elevated privileges, specifically when the repository name starts with a - (dash) character.

Understanding CVE-2017-8386

This CVE entry highlights a potential security risk in the git version specified.

What is CVE-2017-8386?

The vulnerability in git-shell allows remote authenticated users to escalate their privileges by manipulating the repository name.

The Impact of CVE-2017-8386

The vulnerability could lead to unauthorized access and privilege escalation by exploiting the git-shell in specific git versions.

Technical Details of CVE-2017-8386

This section delves into the technical aspects of the vulnerability.

Vulnerability Description

The flaw in git versions prior to 2.12.3 enables remote authenticated users to gain elevated privileges through git-shell.

Affected Systems and Versions

Versions of git before 2.4.12 to 2.12.3

Exploitation Mechanism

The vulnerability arises when a repository name starts with a - (dash) character, allowing remote authenticated users to exploit git-shell.

Mitigation and Prevention

Protecting systems from this vulnerability is crucial to maintaining security.

Immediate Steps to Take

Update git to versions 2.12.3 or later to mitigate the vulnerability
Monitor and restrict user access to prevent unauthorized activities

Long-Term Security Practices

Regularly update software and apply security patches
Implement access controls and authentication mechanisms to limit risks

Patching and Updates

Stay informed about security advisories and apply patches promptly to address known vulnerabilities