CVE-2023-49103 is a critical vulnerability affecting ownCloud's graph_api, specifically versions 0.2.x prior to 0.2.1 and 0.3.x prior to 0.3.1. This vulnerability allows attackers to access sensitive configuration details through a third-party library, GetPhpInfo.php. When accessed, this library can reveal the PHP environment configuration, including environment variables that may contain sensitive data such as the ownCloud admin password, mail server credentials, and license keys. The implications of this vulnerability are severe, as simply disabling the graph_api app does not eliminate the risk.
The vulnerability not only affects installations running in containerized environments but also poses a risk for standard deployments. The phpinfo function exposes various potentially sensitive details that could be leveraged by an attacker to gather information about the system. Organizations must recognize that this vulnerability is critical and requires immediate attention to avoid potential exploitation.
Given the severity of this vulnerability, organizations should prioritize patching to ensure that their systems are protected. The CVSS score of 10 indicates a critical level of risk, and the vulnerability is included in the Known Exploited Vulnerabilities (KEV) catalog, further emphasizing its urgency.
Organizations should prioritize patching immediately. This vulnerability not only presents a significant risk to data confidentiality but also impacts integrity and availability, making swift action essential.
Vulnerability Details
CVE-2023-49103 allows for information disclosure through the GetPhpInfo.php library used in the ownCloud graph_api. The critical CVSS score of 10 reflects the high impact of this vulnerability, which can lead to the exposure of sensitive configuration details, including administrative credentials. The vulnerability was published on November 21, 2023, and is classified under CWE-200.
Technical Analysis
The root cause of this vulnerability lies in the reliance of the graph_api app on the third-party GetPhpInfo.php library, which, when accessed, reveals the PHP environment configuration. The attack vector is network-based, with low complexity and no privileges required, meaning attackers can exploit it without needing authorized access. As a result, the potential for exploitation is high, and the confidentiality, integrity, and availability impacts are severe.
Risk & Impact Analysis
Organizations utilizing ownCloud's graph_api must understand the real-world risks associated with CVE-2023-49103. The potential for sensitive data exposure is significant, especially in environments where administrative credentials and configuration details are accessible. The vulnerability's inclusion in the KEV catalog underscores the urgency for organizations to act swiftly to mitigate risks and ensure that sensitive information remains protected.
Signal | Status |
|---|---|
Known Exploit | Yes |
Public PoC | Yes |
Actively Exploited | Yes |
Ransomware Use | No |
Affected Versions
The affected versions of ownCloud's graph_api include 0.2.0 and 0.3.0. Organizations running these versions should take immediate action to patch or mitigate the vulnerability to prevent potential exploitation.
Mitigation & Remediation
To mitigate the risks associated with CVE-2023-49103, organizations should apply patches provided by the vendor as soon as possible. If patches are unavailable, organizations should consider disabling the graph_api app until a fix is implemented. Additionally, organizations should review their configurations and ensure that sensitive data is not exposed through phpinfo. For comprehensive guidance on security testing, organizations can refer to penetration testing services to validate their security posture.
Detection Guidance
Organizations should monitor logs for unusual access patterns to the GetPhpInfo.php URL, as well as any attempts to retrieve sensitive configuration details. Behavioral anomalies related to unauthorized access should also be flagged for review. Network signatures that identify calls to the vulnerable library can assist in early detection of potential exploitation.
AppSecure Threat Intelligence Insight
CVE-2023-49103 represents a significant threat in the landscape of web application security, especially within containerized environments. The pattern of exposing sensitive information through misconfigured components is a recurring issue that security teams must address. Organizations should take this incident as a lesson to implement robust security measures, including regular audits and security assessments. For further insights into security best practices, consider exploring our resources on vulnerability management programs and penetration testing methodology to strengthen your defenses.
Disclaimer: This content was generated using AI. While we strive for accuracy, please verify critical information with official sources.
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