CVE-2023-2792 : Vulnerability Insights and Analysis
Learn about CVE-2023-2792, a medium severity issue in Mattermost that exposes sensitive information to unauthorized actors. Includes impact, technical details, and mitigation steps.
This CVE-2023-2792 was published by Mattermost and affects various versions of the Mattermost software. The vulnerability was discovered by Juho Nurminen and falls under the problem type of "Exposure of Sensitive Information to an Unauthorized Actor" (CWE-200). The CVSS v3.1 base score for this vulnerability is 6.5, categorizing it as a medium severity issue.
Understanding CVE-2023-2792
This CVE highlights a vulnerability in Mattermost where ephemeral error messages are not properly sanitized. This flaw enables attackers to access arbitrary message contents by using a specially crafted "/groupmsg" command.
What is CVE-2023-2792?
CVE-2023-2792 pertains to a security weakness in Mattermost that allows unauthorized users to retrieve sensitive message contents due to the mishandling of ephemeral error messages.
The Impact of CVE-2023-2792
The impact of this vulnerability is rated as medium severity. It can lead to a breach of confidentiality as attackers can gain access to private message contents through malicious commands.
Technical Details of CVE-2023-2792
This section dives into the technical aspects of the CVE, including the vulnerability description, affected systems and versions, as well as the exploitation mechanism.
Vulnerability Description
The vulnerability in Mattermost arises from the failure to properly sanitize ephemeral error messages, facilitating unauthorized access to message contents.
Affected Systems and Versions
The impacted versions of Mattermost include those equal to or less than 7.1.9, 7.8.4, and 7.9.3. Versions 7.10.0 and below are also affected by this vulnerability.
Exploitation Mechanism
By employing a specially crafted "/groupmsg" command, threat actors can exploit the vulnerability to retrieve arbitrary message contents.
Mitigation and Prevention
To mitigate the risks associated with CVE-2023-2792, immediate actions need to be taken along with the implementation of long-term security practices and patching procedures.
Immediate Steps to Take
Update Mattermost to version 7.1.10, 7.8.5, 7.9.4, 7.10.1, or any version higher than these to address the vulnerability and enhance the security of the software.
Long-Term Security Practices
Incorporate robust security measures such as regular security audits, code reviews, and employee training to maintain a secure environment for the organization's data and communications.
Patching and Updates
Stay updated with security patches and software upgrades provided by Mattermost to ensure that the latest security enhancements are applied to mitigate potential vulnerabilities like CVE-2023-2792.