CVE-2018-19754 in Tarantella
Summary
by MITRE
Tarantella Enterprise before 3.11 allows bypassing Access Control.
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Analysis
by VulDB Data Team • 06/13/2023
The vulnerability identified as CVE-2018-19754 affects Tarantella Enterprise versions prior to 3.11, representing a critical access control bypass flaw that undermines the security posture of enterprise remote access solutions. This vulnerability resides within the authentication and authorization mechanisms of the Tarantella Enterprise platform, which is designed to provide secure remote desktop and application access services for organizations. The flaw allows authenticated users or attackers to potentially circumvent established access controls and gain unauthorized access to resources that should be restricted based on user privileges or roles.
The technical implementation of this access control bypass stems from insufficient validation of user permissions and session states within the Tarantella Enterprise framework. Attackers can exploit this weakness to escalate their privileges or access restricted functionalities without proper authorization. The vulnerability likely manifests through improper handling of session tokens, inadequate role-based access controls, or flawed permission checking mechanisms that fail to properly validate user entitlements before granting access to protected resources. This type of flaw falls under the CWE-284 category of Improper Access Control, which specifically addresses weaknesses in authorization mechanisms that allow unauthorized access to system resources.
The operational impact of this vulnerability extends beyond simple privilege escalation, as it can enable attackers to compromise entire remote access infrastructures that organizations rely upon for secure business operations. Organizations using vulnerable versions of Tarantella Enterprise may experience unauthorized access to sensitive applications, data, and system resources that should remain protected from unauthorized users. The consequences can include data breaches, lateral movement within networks, and potential complete compromise of remote access services that are critical for business continuity. This vulnerability directly impacts the confidentiality, integrity, and availability of enterprise systems, making it particularly dangerous in environments where remote access is heavily utilized for business operations.
Security professionals should prioritize immediate remediation of this vulnerability by upgrading to Tarantella Enterprise version 3.11 or later, which contains the necessary patches to address the access control bypass issue. Organizations should also conduct comprehensive security assessments to identify any potential exploitation attempts and implement additional monitoring controls around authentication and access control events. The mitigation strategy should include reviewing and strengthening access control policies, implementing proper session management controls, and ensuring that all authentication mechanisms are properly validated. From an ATT&CK framework perspective, this vulnerability maps to techniques involving privilege escalation and persistence, as attackers could potentially maintain access to systems through the bypassed controls. Regular security audits and vulnerability assessments should be conducted to ensure that similar access control weaknesses do not exist in other components of the enterprise infrastructure, particularly in remote access and authentication systems that handle sensitive organizational data.