CVE-2024-20936 is a vulnerability identified in the Oracle One-to-One Fulfillment component of the Oracle E-Business Suite, specifically affecting versions 12.2.3 through 12.2.13. This vulnerability allows an unauthenticated attacker with network access via HTTP to compromise the affected system. The attack vector requires no privileges and low attack complexity, but it does require user interaction from a person other than the attacker, such as clicking a malicious link or opening a crafted document. The vulnerability impacts confidentiality and integrity, enabling unauthorized read access to some data and unauthorized update, insert, or delete operations on accessible data within Oracle One-to-One Fulfillment. Notably, the vulnerability has a scope change, meaning that although it resides in the One-to-One Fulfillment product, exploitation may affect additional Oracle products integrated or dependent on this component. The CVSS 3.1 base score is 6.1, indicating a medium severity level. The vulnerability is classified under CWE-284, which relates to improper access control, highlighting that the root cause is insufficient authorization checks. No known exploits in the wild have been reported yet, and no official patches have been linked at the time of this report. The vulnerability’s requirement for human interaction and its ability to be exploited remotely over HTTP make it a significant risk, especially in environments where Oracle E-Business Suite is exposed to internal or external networks. Attackers could leverage this flaw to manipulate business-critical data, potentially disrupting operations or causing data leakage.

For European organizations, the impact of CVE-2024-20936 can be substantial, particularly for enterprises relying on Oracle E-Business Suite for critical business processes such as order fulfillment, customer relationship management, and supply chain operations. Unauthorized data modification could lead to financial discrepancies, operational disruptions, and loss of data integrity, which in regulated industries (e.g., finance, healthcare, manufacturing) could also result in compliance violations under GDPR and other data protection laws. The unauthorized read access to sensitive data could expose personal or business-critical information, increasing the risk of data breaches and reputational damage. The scope change aspect implies that the vulnerability might affect other integrated Oracle products, potentially amplifying the impact across multiple business functions. Given the medium severity and the need for user interaction, the threat is more likely to manifest in targeted phishing or social engineering campaigns aimed at employees with access to Oracle systems. European organizations with remote or hybrid work environments may be particularly vulnerable if internal Oracle applications are accessible over HTTP without adequate network segmentation or security controls.

To mitigate the risk posed by CVE-2024-20936, European organizations should: 1) Immediately review and apply any available Oracle patches or security updates for the One-to-One Fulfillment component as soon as they are released. 2) Restrict network exposure of Oracle E-Business Suite components by enforcing strict access controls, including limiting HTTP access to trusted internal networks or VPNs only. 3) Implement robust email and web filtering solutions to reduce the risk of phishing or malicious content that could trigger the required user interaction. 4) Conduct targeted user awareness training focusing on recognizing social engineering attempts related to Oracle applications. 5) Monitor Oracle application logs and network traffic for unusual activities indicative of exploitation attempts, such as unauthorized data modification or access patterns. 6) Employ application-layer firewalls or Oracle’s own security features to enforce granular access controls and validate user actions within the One-to-One Fulfillment module. 7) Consider network segmentation to isolate Oracle E-Business Suite components from general user networks, minimizing the attack surface. 8) Regularly audit and review user permissions within Oracle systems to ensure the principle of least privilege is enforced, reducing potential damage from compromised accounts.