CVE-2023-2797 : Vulnerability Insights and Analysis

This CVE-2023-2797 pertains to a vulnerability in the Mattermost Github Plugin that allows an attacker to preview code from private repositories by exploiting a path traversal issue.

Understanding CVE-2023-2797

This vulnerability in the Mattermost Github Plugin poses a risk as it fails to properly sanitize code permalinks. This loophole can be exploited by malicious actors to gain unauthorized access to code from private repositories.

What is CVE-2023-2797?

The CVE-2023-2797 vulnerability involves a path traversal flaw in the code preview feature of the Mattermost Github Plugin. Attackers can manipulate specially crafted permalinks to view code snippets from repositories where they shouldn't have access.

The Impact of CVE-2023-2797

The impact of this vulnerability is rated as low severity with a CVSS v3.1 base score of 3.1. While the confidentiality impact is low, it can still lead to code exposure and potential data breaches if exploited by threat actors.

Technical Details of CVE-2023-2797

This section provides more detailed insights into the vulnerability and its technical aspects.

Vulnerability Description

The vulnerability arises due to inadequate sanitization of code permalinks, enabling attackers to view code from restricted repositories by sharing crafted permalinks in a channel.

Affected Systems and Versions

The vulnerable versions of the Mattermost Github Plugin include those less than or equal to 7.1.9 and 7.8.4. Versions 7.10.0 are affected, while 7.1.10, 7.8.5, and 7.10.1 are safe from this vulnerability.

Exploitation Mechanism

To exploit this vulnerability, attackers can manipulate permalinks containing specific sequences that enable them to access code from private repositories, bypassing access restrictions.

Mitigation and Prevention

It's crucial for organizations using the affected versions to take immediate action to mitigate the risk and prevent any potential exploitation.

Immediate Steps to Take

Update the Mattermost Github Plugin to version 7.1.10, 7.8.5, 7.10.1, or higher to address the vulnerability and enhance the security posture of the system.

Long-Term Security Practices

Incorporate robust code sanitization mechanisms and regularly audit and monitor code-sharing features to prevent similar vulnerabilities in the future.

Patching and Updates

Regularly apply security patches and updates provided by Mattermost to stay protected against emerging threats and safeguard sensitive code repositories.