Information disclosure in ownCloud Graph API
CVE-2023-49103
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.
Vulnerability class: Information Disclosure
EPSS: 0.784 (99.6th percentile) — read the EPSS interpretation.
CVSS v3 metric
CVSS v3 base score 10.0 (Critical). Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:C/C:H/I:H/A:H.
Affected products
- Owncloud Graph_api — versions 0.2.0, 0.3.0
- N/a — versions n/a
Weakness classification (CWE)
CISA KEV (Known Exploited Vulnerabilities)
This CVE is on the CISA KEV catalog, added on . CISA KEV inclusion means CISA has confirmed in-the-wild exploitation; US federal agencies are required to remediate within a published due date.
BOD 22-01 due date: .
Required action: Apply mitigations per vendor instructions or discontinue use of the product if mitigations are unavailable.
Public proof-of-concept exploits
References
- cve@mitre.org (Product)
- cve@mitre.org (Vendor Advisory)
- 134c704f-9b21-4f2e-91b3-4a467353bcc0 (US Government Resource)
Frequently asked questions
- What is CVE-2023-49103?
- CVE-2023-49103 is a critical-severity vulnerability in ownCloud Graph API, classified under Information Disclosure. CVSS score: 10.0/10. Published 2023-11-21.
- How severe is CVE-2023-49103?
- Critical severity. CVSS v3 base score is 10.0 out of 10.
- Is CVE-2023-49103 known to be exploited?
- Yes. CVE-2023-49103 is listed in the CISA Known Exploited Vulnerabilities catalog (added 2023-11-30), indicating it is being actively exploited. 20 public proof-of-concept repositories are indexed.