CVE-2019-14367

Vulnerability

Slack-Chat plugin for WordPress through version 1.5.5 contains an insecure permission vulnerability where a Slack Access Token is hardcoded in the source code (likely in a JavaScript file or server-side script). This token is visible to anyone who can view the plugin's source, such as through a publicly accessible file or the WordPress admin panel. Affected versions are all versions up to and including 1.5.5 [2].

Exploitation

An attacker can obtain the Slack Access Token by accessing the plugin's source code, which may be exposed via direct file access (e.g., wp-content/plugins/slack-chat/...) or through WordPress debug features. No authentication is required if the file is publicly accessible; otherwise, an attacker with low-level WordPress access (e.g., subscriber) can view the source. The token is embedded as a literal string in the code [2].

Impact

Successful exploitation allows the attacker to use the Slack Access Token to access the victim's Slack workspace, retrieving sensitive information such as channel lists, member details, and messages. This constitutes a significant information disclosure (confidentiality breach) with potential for further social engineering or data exfiltration [2].

Mitigation

The vulnerability is fixed in version 1.5.6 or later, according to the plugin's commit history [1]. Users should update to the latest version immediately. If no update is available, the plugin should be removed or the token revoked in Slack. No workaround is provided in the available references.