CVE-2021-2414 in Communications Session Border Controller
Summary
by MITRE • 10/20/2021
Vulnerability in the Oracle Communications Session Border Controller product of Oracle Communications (component: Routing). Supported versions that are affected are 8.4 and 9.0. Easily exploitable vulnerability allows high privileged attacker with network access via HTTP to compromise Oracle Communications Session Border Controller. While the vulnerability is in Oracle Communications Session Border Controller, attacks may significantly impact additional products. Successful attacks of this vulnerability can result in unauthorized access to critical data or complete access to all Oracle Communications Session Border Controller accessible data. CVSS 3.1 Base Score 6.8 (Confidentiality impacts). CVSS Vector: (CVSS:3.1/AV:N/AC:L/PR:H/UI:N/S:C/C:H/I:N/A:N).
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Analysis
by VulDB Data Team • 10/24/2021
The vulnerability identified as CVE-2021-2414 affects the Oracle Communications Session Border Controller, specifically within its Routing component. This security flaw exists in versions 8.4 and 9.0 of the software, representing a significant concern for organizations relying on this communication infrastructure. The vulnerability falls under CWE-287 which addresses authentication failures, making it particularly dangerous as it allows attackers to bypass normal authentication mechanisms. The CVSS 3.1 score of 6.8 indicates a high severity vulnerability with a base score that reflects the potential for significant confidentiality impacts.
The technical nature of this vulnerability stems from insufficient authentication controls within the routing component of the Session Border Controller. An attacker with high privileges and network access via HTTP can exploit this weakness to gain unauthorized access to critical system data. The vulnerability's exploitability is classified as easily accessible, meaning that skilled attackers with minimal resources can potentially compromise the system. The attack vector requires network connectivity and assumes the attacker already possesses high-level privileges, suggesting this vulnerability may be exploited through lateral movement or privilege escalation within an existing compromised environment.
The operational impact of this vulnerability extends beyond the immediate Session Border Controller system, as noted in the description. Successful exploitation can result in unauthorized access to all accessible data within the controller, potentially exposing sensitive communication routing information, user credentials, or network configuration details. The confidentiality impact is rated as high, indicating that attackers could access critical data that might include proprietary communication patterns, user information, or system architecture details that could be leveraged for further attacks. The CVSS vector specifically indicates that the attack requires network access with high privileges and does not require user interaction, making it particularly concerning for systems with exposed HTTP interfaces.
Organizations should implement immediate mitigations including applying the relevant Oracle security patches and updates as released through Oracle Critical Patch Updates. Network segmentation and access controls should be strengthened to limit exposure of the Session Border Controller to untrusted networks. The vulnerability's classification under ATT&CK tactic T1078 for valid accounts and T1566 for malicious email should prompt organizations to review their access control policies and monitor for unusual authentication patterns. Additional defensive measures include implementing web application firewalls to filter HTTP traffic, conducting regular vulnerability assessments, and ensuring that only necessary HTTP services are exposed to external networks. The attack surface should be minimized by disabling unnecessary routing components and implementing strict access controls for administrative interfaces. Regular security monitoring should be enhanced to detect potential exploitation attempts, particularly focusing on unusual authentication patterns or unauthorized data access attempts that might indicate successful exploitation of this vulnerability.