CVE-2016-3543 in Common Applications Calendar
Summary
by MITRE
Unspecified vulnerability in the Oracle Common Applications Calendar component in Oracle E-Business Suite 12.1.1, 12.1.2, 12.1.3, 12.2.3, 12.2.4, and 12.2.5 allows remote attackers to affect confidentiality and integrity via vectors related to Tasks.
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Analysis
by VulDB Data Team • 09/07/2022
The vulnerability identified as CVE-2016-3543 resides within the Oracle Common Applications Calendar component of the Oracle E-Business Suite, specifically affecting versions 12.1.1 through 12.2.5. This issue represents a significant security weakness that could potentially compromise the integrity and confidentiality of sensitive data within enterprise environments that utilize this software stack. The vulnerability is categorized as unspecified, indicating that the exact technical mechanism remains undisclosed, though the impact is clearly defined in terms of data compromise. The affected component is part of Oracle's comprehensive business suite that serves as a critical foundation for enterprise resource planning and business process automation across numerous organizations globally.
The technical flaw manifests through vectors related to Tasks within the Calendar component, suggesting that attackers can exploit weaknesses in how calendar tasks are processed, stored, or transmitted. This vulnerability falls under the broader category of application-level security flaws that can be leveraged by remote threat actors without requiring physical access to the system. The unspecified nature of the vulnerability indicates that it likely involves improper input validation, inadequate access controls, or flawed data handling mechanisms within the task processing functionality. According to CWE classification standards, this vulnerability could potentially map to CWE-20 for improper input validation or CWE-284 for improper access control, though the exact mapping depends on the specific implementation details. The remote attack vector means that threat actors can exploit this weakness from outside the network perimeter, amplifying the potential impact on enterprise security posture.
The operational impact of CVE-2016-3543 extends beyond simple data confidentiality breaches, as it also affects data integrity, potentially allowing attackers to modify or corrupt calendar tasks and associated business data. This type of vulnerability can have cascading effects throughout enterprise operations, as calendar systems often integrate with critical business processes including resource allocation, scheduling, and workflow management. The compromise of calendar task data could lead to unauthorized access to sensitive business information, disruption of business operations, and potential financial losses. From an attacker's perspective, this vulnerability aligns with ATT&CK techniques related to privilege escalation and data manipulation, as threat actors could leverage the weakness to gain unauthorized access to business-critical scheduling information and potentially use this access as a foothold for further attacks within the enterprise network. Organizations using affected versions of Oracle E-Business Suite face significant risk of data compromise and operational disruption.
Mitigation strategies for CVE-2016-3543 should prioritize immediate patching of affected Oracle E-Business Suite installations through official Oracle security updates and patches. Organizations must also implement network segmentation and access controls to limit exposure of vulnerable components to untrusted networks. Security monitoring should be enhanced to detect unusual patterns in calendar task access and modifications, while regular vulnerability assessments should be conducted to identify similar weaknesses in other Oracle applications and third-party components. The remediation process must include thorough testing of patches in staging environments before deployment to production systems to prevent potential service disruptions. Additionally, organizations should consider implementing additional security controls such as web application firewalls and intrusion detection systems to provide defense-in-depth protection against exploitation attempts. Regular security awareness training for system administrators and IT personnel can help identify potential exploitation attempts and maintain overall security hygiene across the enterprise infrastructure.