CVE-2020-14565 in Unified Directory
Summary
by MITRE
Vulnerability in the Oracle Unified Directory product of Oracle Fusion Middleware (component: Security). Supported versions that are affected are 11.1.2.3.0, 12.2.1.3.0 and 12.2.1.4.0. Easily exploitable vulnerability allows high privileged attacker with network access via HTTP to compromise Oracle Unified Directory. Successful attacks require human interaction from a person other than the attacker and while the vulnerability is in Oracle Unified Directory, attacks may significantly impact additional products. Successful attacks of this vulnerability can result in unauthorized creation, deletion or modification access to critical data or all Oracle Unified Directory accessible data and unauthorized ability to cause a hang or frequently repeatable crash (complete DOS) of Oracle Unified Directory. CVSS 3.1 Base Score 8.1 (Integrity and Availability impacts). CVSS Vector: (CVSS:3.1/AV:N/AC:L/PR:H/UI:R/S:C/C:N/I:H/A:H).
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Analysis
by VulDB Data Team • 11/01/2020
The vulnerability identified as CVE-2020-14565 represents a critical security flaw within Oracle Unified Directory, a component of Oracle Fusion Middleware that serves as a centralized identity management solution. This vulnerability resides in the security subsystem of the software and affects specific version releases including 11.1.2.3.0, 12.2.1.3.0, and 12.2.1.4.0. The flaw manifests as an easily exploitable weakness that can be leveraged by attackers with high privileges who can access the system through HTTP protocols. The vulnerability's classification as easily exploitable indicates that sophisticated attack techniques are not required, making it particularly dangerous for organizations relying on this directory service. The security implications extend beyond the immediate Oracle Unified Directory component, potentially affecting related products within the Oracle Fusion Middleware ecosystem through cascading impacts.
The technical nature of this vulnerability stems from insufficient access controls and authentication mechanisms within the Oracle Unified Directory security framework. Attackers with high privileged network access via HTTP can exploit this weakness to gain unauthorized access to critical data within the directory service. The vulnerability enables attackers to perform unauthorized operations including creating, deleting, or modifying sensitive data within the Oracle Unified Directory environment. Additionally, successful exploitation can result in complete denial of service conditions where the directory service experiences hangs or frequent crashes, effectively rendering the system non-operational. The CVSS 3.1 scoring of 8.1 reflects the significant impact on both integrity and availability aspects of the security triad, with the availability impact rated as high due to the potential for complete system crashes. The vector notation CVSS:3.1/AV:N/AC:L/PR:H/UI:R/S:C/C:N/I:H/A:H indicates network-based exploitation with low attack complexity, requiring high privileges, human interaction from users other than the attacker, and a potentially catastrophic impact across multiple products.
The operational impact of CVE-2020-14565 extends far beyond simple data compromise, as it represents a severe threat to enterprise identity infrastructure. Organizations utilizing Oracle Unified Directory for managing user identities, access controls, and authentication services face significant risk of unauthorized data manipulation and complete service disruption. The requirement for human interaction from individuals other than the attacker suggests that social engineering or insider threat scenarios could amplify the vulnerability's impact. This characteristic aligns with ATT&CK technique T1078 for valid accounts and potentially T1489 for denial of service attacks. The vulnerability's potential to affect additional Oracle products demonstrates the interconnected nature of enterprise middleware solutions and highlights the importance of comprehensive security assessments across entire application stacks rather than isolated components. Organizations may experience cascading failures as compromised directory services can disrupt authentication for multiple downstream applications and systems that depend on unified directory services.
Mitigation strategies for this vulnerability should prioritize immediate patching and updates from Oracle to address the specific security flaw in the affected versions. Organizations must implement network segmentation and access controls to limit HTTP access to Oracle Unified Directory services, particularly restricting access to high-privileged accounts. The implementation of additional authentication layers, such as multi-factor authentication for administrative access, can help reduce the attack surface. Security monitoring should be enhanced to detect unusual patterns of directory access or modification attempts that could indicate exploitation attempts. The vulnerability's classification under CWE 284 (Improper Access Control) and its potential mapping to ATT&CK techniques for privilege escalation and denial of service provides clear guidance for security teams in developing defensive measures. Regular security assessments and penetration testing of directory services should be conducted to identify similar access control weaknesses that may exist in other enterprise systems. Given the high impact rating and the requirement for human interaction, organizations should also implement user awareness training to recognize potential social engineering attempts that could lead to exploitation of this vulnerability.