Information disclosure in Graph API - CVE-2023-49103

Detailed vulnerability description

The vulnerability allows a remote attacker to gain access to potentially sensitive information.

The vulnerability exists due to the application relies on the third-party GetPhpInfo.php library that provides a URL when it is accessed and reveals the configuration details of the PHP environment (phpinfo). The disclosed information includes all the environment variables of the webserver. In containerized deployments, these environment variables may include sensitive data such as the ownCloud admin password, mail server credentials, and license key. A remote non-authenticated attacker can gain access to sensitive information.

How to mitigate CVE-2023-49103

Sources

• https://owncloud.com/security-advisories/disclosure-of-sensitive-credentials-and-configuration-in-containerized-deployments/
• https://www.greynoise.io/blog/cve-2023-49103-owncloud-critical-vulnerability-quickly-exploited-in-the-wild