CVE-2021-2004 in Siebel Core - Server BizLogic Script
Summary
by MITRE • 01/20/2021
Vulnerability in the Siebel Core - Server BizLogic Script product of Oracle Siebel CRM (component: Integration - Scripting). Supported versions that are affected are 20.12 and prior. Easily exploitable vulnerability allows low privileged attacker with network access via HTTP to compromise Siebel Core - Server BizLogic Script. Successful attacks of this vulnerability can result in unauthorized read access to a subset of Siebel Core - Server BizLogic Script accessible data. CVSS 3.1 Base Score 4.3 (Confidentiality impacts). CVSS Vector: (CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:L/I:N/A:N).
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Analysis
by VulDB Data Team • 02/17/2021
The vulnerability identified as CVE-2021-2004 resides within Oracle Siebel CRM's Core - Server BizLogic Script component, specifically within the Integration - Scripting module. This flaw affects versions 20.12 and earlier, representing a significant security weakness in enterprise customer relationship management systems. The vulnerability manifests as an easily exploitable issue that can be leveraged by low-privileged attackers who possess network access through HTTP protocols. The affected system component operates as a critical business logic processor within the Siebel architecture, handling core operational functions that govern customer data management and business processes.
The technical nature of this vulnerability stems from insufficient access controls within the scripting framework, allowing unauthorized users to bypass normal authentication mechanisms. The CVSS score of 4.3 reflects the moderate severity of the confidentiality impact, where attackers can gain unauthorized read access to specific subsets of data within the BizLogic Script environment. This represents a privilege escalation issue where low-privileged users can access data that should normally be restricted to higher-privileged accounts. The vulnerability's exploitability is classified as low complexity, requiring no special circumstances beyond basic network connectivity and HTTP access, making it particularly dangerous in environments where network exposure is common.
The operational impact of this vulnerability extends beyond simple data theft, as it can compromise the integrity of business processes that depend on proper access controls. Organizations utilizing Siebel CRM systems may experience unauthorized access to customer information, business logic configurations, and potentially sensitive operational data that could be used for competitive advantage or malicious purposes. The subset of accessible data suggests that while not all system information is compromised, enough sensitive business logic and customer data could be retrieved to cause significant operational and reputational damage. This vulnerability directly impacts the confidentiality pillar of the CIA triad, potentially exposing business-critical information that organizations rely on for secure operations.
Security professionals should consider this vulnerability in the context of the CWE-284 access control weakness classification, which specifically addresses improper access control mechanisms that allow unauthorized access to resources. The ATT&CK framework would categorize this as a privilege escalation technique where an attacker leverages a weakness in application logic to gain unauthorized access to restricted data. Organizations should implement immediate mitigations including network segmentation, enhanced access controls, and thorough review of user permissions within Siebel systems. The vulnerability also highlights the importance of keeping enterprise CRM systems updated, as version 20.13 and later should contain the necessary patches to address this specific access control flaw. Regular security assessments of business logic components and automated scanning for similar access control vulnerabilities should be implemented as part of comprehensive security strategies to prevent exploitation of similar weaknesses in other system components.