CVE-2017-18917 : Vulnerability Insights and Analysis

Mattermost Server versions 3.8.2, 3.7.5, and 3.6.7 had a vulnerability due to weak hashing methods used for e-mail invitations, OAuth, and e-mail verification tokens.

Understanding CVE-2017-18917

This CVE identifies a security issue in Mattermost Server versions 3.8.2, 3.7.5, and 3.6.7 related to inadequate hashing methods for certain tokens.

What is CVE-2017-18917?

The vulnerability in Mattermost Server versions 3.8.2, 3.7.5, and 3.6.7 stemmed from the use of weak hashing algorithms for e-mail invitations, OAuth, and e-mail verification tokens.

The Impact of CVE-2017-18917

The vulnerability could potentially allow attackers to exploit the weak hashing methods and compromise the security and integrity of e-mail invitations, OAuth tokens, and e-mail verification tokens.

Technical Details of CVE-2017-18917

This section provides more in-depth technical insights into the CVE.

Vulnerability Description

The issue in Mattermost Server versions 3.8.2, 3.7.5, and 3.6.7 was attributed to the inadequate use of hashing algorithms for critical tokens like e-mail invitations, OAuth, and e-mail verification tokens.

Affected Systems and Versions

Mattermost Server versions 3.8.2, 3.7.5, and 3.6.7

Exploitation Mechanism

Attackers could potentially exploit this vulnerability by leveraging the weak hashing methods to manipulate or access e-mail invitations, OAuth tokens, and e-mail verification tokens.

Mitigation and Prevention

Protecting systems from CVE-2017-18917 requires immediate actions and long-term security practices.

Immediate Steps to Take

Update Mattermost Server to a patched version that addresses the weak hashing vulnerability.
Monitor and restrict access to critical tokens and invitations.

Long-Term Security Practices

Implement strong hashing algorithms for sensitive tokens and data.
Regularly audit and review security practices to identify and mitigate similar vulnerabilities.

Patching and Updates

Apply security patches provided by Mattermost promptly to ensure the vulnerability is mitigated and the system is secure.