CVE-2021-2447 in Secure Global Desktop
Summary
by MITRE • 07/21/2021
Vulnerability in the Oracle Secure Global Desktop product of Oracle Virtualization (component: Server). The supported version that is affected is 5.6. Easily exploitable vulnerability allows low privileged attacker with network access via multiple protocols to compromise Oracle Secure Global Desktop. While the vulnerability is in Oracle Secure Global Desktop, attacks may significantly impact additional products. Successful attacks of this vulnerability can result in takeover of Oracle Secure Global Desktop. CVSS 3.1 Base Score 9.9 (Confidentiality, Integrity and Availability impacts). CVSS Vector: (CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:C/C:H/I:H/A:H).
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Analysis
by VulDB Data Team • 07/25/2021
The vulnerability identified as CVE-2021-2447 represents a critical security flaw within Oracle Secure Global Desktop version 5.6, a component of Oracle Virtualization that provides remote desktop virtualization services. This vulnerability resides in the server component of the Secure Global Desktop product, making it accessible to attackers who can leverage multiple network protocols to exploit the weakness. The vulnerability's classification as easily exploitable indicates that attackers with minimal privileges and network access can successfully compromise the system without requiring advanced technical skills or extensive reconnaissance. The attack vector is particularly concerning as it can be initiated through multiple protocols, increasing the attack surface and making detection more difficult for security teams. The CVSS 3.1 base score of 9.9 reflects the severe impact potential, with high scores across all three core security principles: confidentiality, integrity, and availability, indicating that successful exploitation could result in complete system compromise.
The technical nature of this vulnerability stems from insufficient input validation or access control mechanisms within the Oracle Secure Global Desktop server component, allowing an attacker to gain unauthorized control over the system. The low privilege requirement suggests that the vulnerability may involve improper authentication checks or inadequate authorization controls that permit attackers to escalate their privileges through network-based attacks. The impact extends beyond the immediate Secure Global Desktop system, as indicated by the CVSS vector's scope change (S:C) which suggests that successful exploitation could significantly affect additional products within the Oracle Virtualization ecosystem. This cascading impact potential means that compromise of the Secure Global Desktop server could lead to broader system infiltration and compromise of other interconnected Oracle products or services.
From an operational perspective, the vulnerability creates substantial risk for organizations relying on Oracle Secure Global Desktop for remote desktop services, particularly in enterprise environments where this technology is commonly deployed. The high confidentiality, integrity, and availability impacts mean that attackers could potentially access sensitive data, modify system configurations, or disrupt critical business operations through complete system takeover. The combination of network accessibility and the ability to compromise the entire Secure Global Desktop platform creates a significant threat vector for both external attackers seeking to infiltrate corporate networks and internal threat actors with access to the network. Organizations using this software face potential data breaches, service disruptions, and regulatory compliance violations that could result in substantial financial and reputational damage.
Security mitigations for CVE-2021-2447 should prioritize immediate patching of Oracle Secure Global Desktop to the latest supported version that addresses this vulnerability. Organizations should implement network segmentation and access controls to limit exposure of the Secure Global Desktop server to only authorized network segments and users. The principle of least privilege should be enforced, ensuring that only necessary network protocols and services are accessible from external networks. Network monitoring and intrusion detection systems should be configured to detect unusual traffic patterns or attempted exploitation of this vulnerability. Additionally, organizations should conduct comprehensive vulnerability assessments to identify any other Oracle Virtualization components that might be similarly affected, as the vulnerability's impact scope suggests potential cascading effects across related products. This vulnerability aligns with CWE-284 (Improper Access Control) and may map to ATT&CK techniques involving privilege escalation and remote code execution, making it particularly dangerous in enterprise environments where such systems are critical infrastructure components.