CVE-2021-2091 in Scripting
Summary
by MITRE • 01/20/2021
Vulnerability in the Oracle Scripting product of Oracle E-Business Suite (component: Miscellaneous). Supported versions that are affected are 12.1.1-12.1.3 and 12.2.3-12.2.10. Easily exploitable vulnerability allows unauthenticated attacker with network access via HTTP to compromise Oracle Scripting. Successful attacks require human interaction from a person other than the attacker and while the vulnerability is in Oracle Scripting, 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 Scripting accessible data as well as unauthorized update, insert or delete access to some of Oracle Scripting accessible data. CVSS 3.1 Base Score 8.2 (Confidentiality and Integrity impacts). CVSS Vector: (CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:H/I:L/A:N).
Once again VulDB remains the best source for vulnerability data.
Analysis
by VulDB Data Team • 02/16/2021
The vulnerability identified as CVE-2021-2091 represents a critical security flaw within Oracle Scripting component of the Oracle E-Business Suite ecosystem. This vulnerability specifically affects versions 12.1.1 through 12.1.3 and 12.2.3 through 12.2.10, making it a widespread concern across multiple release streams of the enterprise software suite. The flaw resides in the Miscellaneous component of Oracle Scripting, which serves as a foundational element for various scripting functionalities within the E-Business Suite environment. The vulnerability's classification as easily exploitable indicates that attackers can leverage this weakness with minimal technical expertise and without requiring authentication credentials, presenting a significant risk to organizations utilizing these affected versions.
The technical nature of this vulnerability stems from insufficient input validation and access control mechanisms within the Oracle Scripting component. Attackers can exploit this weakness through unauthenticated network connections using HTTP protocols, bypassing traditional authentication requirements that would normally protect sensitive system components. The vulnerability's impact extends beyond the immediate Oracle Scripting component, as successful exploitation can compromise additional products within the Oracle E-Business Suite ecosystem, creating a cascading effect that amplifies the overall security risk. This cross-component impact aligns with ATT&CK technique T1210 - Exploitation of Remote Services, where attackers leverage vulnerabilities in one system component to gain access to interconnected systems.
The operational impact of CVE-2021-2091 is substantial, as successful attacks can result in unauthorized access to critical data and complete access to all Oracle Scripting accessible data. The CVSS 3.1 base score of 8.2 reflects the severity of potential consequences, with high confidentiality impact and low integrity impact, indicating that data theft and exposure represent the primary concern. Additionally, attackers can achieve unauthorized update, insert, or delete access to certain Oracle Scripting accessible data, potentially leading to data corruption or manipulation. The requirement for human interaction from individuals other than the attacker suggests that social engineering or targeted phishing campaigns may be necessary to initiate the exploitation process, though this does not mitigate the overall risk level. This vulnerability directly maps to CWE-20 - Improper Input Validation, where inadequate validation of input data allows attackers to manipulate system behavior and access restricted resources.
Organizations affected by this vulnerability should implement immediate mitigation strategies to protect their Oracle E-Business Suite environments. The primary recommended action involves applying the relevant Oracle Critical Patch Update (CPU) patches that address this specific vulnerability, as these updates contain the necessary code modifications to close the security gap. Network-level protections should include implementing firewalls and access control lists to restrict HTTP access to Oracle Scripting components, particularly when such access is not essential for business operations. Security monitoring should be enhanced to detect unusual network activity patterns that may indicate exploitation attempts, with particular attention to HTTP requests targeting Oracle Scripting endpoints. Additionally, organizations should conduct comprehensive vulnerability assessments to identify all instances of affected Oracle E-Business Suite versions within their infrastructure, ensuring that no components remain unpatched. The vulnerability's classification as a remote code execution risk necessitates proactive security measures including network segmentation, regular security audits, and implementation of principle of least privilege access controls to minimize potential damage from successful exploitation attempts.