CVE-2023-47168 : Security Advisory and Response
Learn about CVE-2023-47168, an open redirect vulnerability in Mattermost impacting versions up to 9.1.0. Find out the impact, technical details, and mitigation steps.
This article provides detailed information about CVE-2023-47168, a vulnerability impacting Mattermost.
Understanding CVE-2023-47168
CVE-2023-47168 is an open redirect vulnerability in Mattermost, allowing for a potential security risk when users interact with certain URLs.
What is CVE-2023-47168?
Mattermost fails to properly validate a redirect URL parameter, leading to an open redirect scenario. This vulnerability allows attackers to potentially redirect users to malicious sites by manipulating the URL.
The Impact of CVE-2023-47168
The impact of this vulnerability could result in users being redirected to untrusted sites unknowingly, potentially exposing them to phishing attacks, malware, or other malicious activities.
Technical Details of CVE-2023-47168
This section covers the technical details of the CVE-2023-47168 vulnerability in Mattermost.
Vulnerability Description
The vulnerability arises from a lack of validation in the redirect URL parameter, enabling attackers to craft URLs that redirect users to malicious sites.
Affected Systems and Versions
Versions of Mattermost up to 9.1.0 are affected by this vulnerability, with specific impacted versions listed as 8.1.3, 7.8.12, 9.0.1, and 9.1.0.
Exploitation Mechanism
Attackers can exploit this vulnerability by manipulating the redirect_to parameter in the /oauth/{service}/mobile_login page, tricking users into visiting malicious URLs.
Mitigation and Prevention
To address CVE-2023-47168 and enhance security, follow these mitigation and prevention strategies.
Immediate Steps to Take
Update Mattermost Server to versions 9.0.2, 9.1.1, 7.8.13, 8.1.4, or higher to patch the vulnerability and prevent exploitation.
Long-Term Security Practices
Implement strict input validation mechanisms to ensure all user-supplied data, including URLs, are properly sanitized and validated to prevent similar vulnerabilities.
Patching and Updates
Regularly monitor security advisories and apply updates promptly to mitigate the risk of known vulnerabilities.