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Known Exploited Vulnerabilities CVE-2023-49103 Mappings

An issue was discovered in ownCloud owncloud/graphapi 0.2.x before 0.2.1 and 0.3.x before 0.3.1. The graphapi app relies on a third-party GetPhpInfo.php library that provides a URL. When this URL is accessed, it reveals the configuration details of the PHP environment (phpinfo). This 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. Simply disabling the graphapi app does not eliminate the vulnerability. Additionally, phpinfo exposes various other potentially sensitive configuration details that could be exploited by an attacker to gather information about the system. Therefore, even if ownCloud is not running in a containerized environment, this vulnerability should still be a cause for concern. Note that Docker containers from before February 2023 are not vulnerable to the credential disclosure.

Mappings

Capability ID Capability Description Mapping Type ATT&CK ID ATT&CK Name Notes
CVE-2023-49103 ownCloud graphapi Information Disclosure Vulnerability primary_impact T1552 Unsecured Credentials
Comments
This vulnerability is exploited through an unauthenticated information disclosure flaw in the Graph API extension of ownCloud. Attackers first used this vulnerability to gain initial access by targeting the /apps/graphapi/vendor/microsoft/microsoft-graph/tests/GetPhpInfo.php endpoint, which allowed them to leak sensitive information via the PHP function phpinfo. By modifying the requested URI to bypass Apache web server rewrite rules, attackers could access environment variables containing secrets, such as usernames, passwords, and license keys.
References
  1. https://arcticwolf.com/resources/blog/cve-2023-49103-cve-2023-49104-and-cve-2023-49105-multiple-critical-vulnerabilities-in-owncloud/
  2. https://www.rapid7.com/blog/post/2023/12/01/etr-cve-2023-49103-critical-information-disclosure-in-owncloud-graph-api/
CVE-2023-49103 ownCloud graphapi Information Disclosure Vulnerability primary_impact T1005 Data from Local System
Comments
This vulnerability is exploited through an unauthenticated information disclosure flaw in the Graph API extension of ownCloud. Attackers first used this vulnerability to gain initial access by targeting the /apps/graphapi/vendor/microsoft/microsoft-graph/tests/GetPhpInfo.php endpoint, which allowed them to leak sensitive information via the PHP function phpinfo. By modifying the requested URI to bypass Apache web server rewrite rules, attackers could access environment variables containing secrets, such as usernames, passwords, and license keys.
References
  1. https://arcticwolf.com/resources/blog/cve-2023-49103-cve-2023-49104-and-cve-2023-49105-multiple-critical-vulnerabilities-in-owncloud/
  2. https://www.rapid7.com/blog/post/2023/12/01/etr-cve-2023-49103-critical-information-disclosure-in-owncloud-graph-api/
CVE-2023-49103 ownCloud graphapi Information Disclosure Vulnerability exploitation_technique T1190 Exploit Public-Facing Application
Comments
This vulnerability is exploited through an unauthenticated information disclosure flaw in the Graph API extension of ownCloud. Attackers first used this vulnerability to gain initial access by targeting the /apps/graphapi/vendor/microsoft/microsoft-graph/tests/GetPhpInfo.php endpoint, which allowed them to leak sensitive information via the PHP function phpinfo. By modifying the requested URI to bypass Apache web server rewrite rules, attackers could access environment variables containing secrets, such as usernames, passwords, and license keys.
References
  1. https://arcticwolf.com/resources/blog/cve-2023-49103-cve-2023-49104-and-cve-2023-49105-multiple-critical-vulnerabilities-in-owncloud/
  2. https://www.rapid7.com/blog/post/2023/12/01/etr-cve-2023-49103-critical-information-disclosure-in-owncloud-graph-api/