CVE-2025-2280 in Server
Summary
by MITRE • 03/13/2025
Improper access control in web extension restriction feature in Devolutions Server 2024.3.13 and earlier allows an authenticated user to bypass the browser extension restriction feature.
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Analysis
by VulDB Data Team • 03/21/2025
The vulnerability identified as CVE-2025-2280 represents a critical access control flaw within Devolutions Server's web extension restriction functionality. This issue affects versions 2024.3.13 and earlier, where an authenticated user can exploit a weakness in the permission model to bypass intended browser extension restrictions. The flaw resides in how the system validates user permissions when accessing restricted resources through browser extensions, creating a pathway for unauthorized access that undermines the security posture of the platform.
The technical implementation of this vulnerability stems from inadequate validation of user credentials and session states within the extension restriction mechanism. When users authenticate to the Devolutions Server, the system should enforce strict access controls based on user roles and permissions. However, the flaw allows authenticated users to manipulate or circumvent these controls through crafted requests or by exploiting gaps in the authentication flow. This improper access control condition creates a scenario where legitimate users can gain access to resources they should not be permitted to reach, violating fundamental security principles of least privilege and principle of least privilege enforcement.
The operational impact of this vulnerability extends beyond simple unauthorized access, potentially enabling attackers to escalate privileges and access sensitive data within the Devolutions Server environment. An attacker who successfully exploits this flaw could gain access to privileged information, modify configuration settings, or manipulate user sessions. The vulnerability affects the core security model of the platform, potentially allowing malicious actors to bypass the intended browser extension restrictions that are designed to prevent unauthorized access to sensitive systems. This weakness could be particularly dangerous in enterprise environments where Devolutions Server is used for credential management and privileged access control.
This vulnerability aligns with CWE-285, which addresses improper authorization within software systems, and demonstrates how weak access control mechanisms can create significant security risks. The flaw may also map to ATT&CK technique T1078.004, which covers valid accounts and credential manipulation, as it allows authenticated users to exploit their existing credentials to gain unauthorized access. Organizations utilizing Devolutions Server should consider this vulnerability as part of their broader security assessment, particularly in environments where privileged access management and browser extension controls are critical security controls. The impact is amplified when considering that the vulnerability affects the restriction feature itself, which is specifically designed to prevent unauthorized access through browser extensions.
Mitigation strategies should focus on immediate patching of affected versions, implementing additional monitoring for unauthorized access attempts, and reviewing existing access control policies. Organizations should also consider implementing network segmentation to limit access to Devolutions Server instances and deploy additional authentication layers. The recommended approach includes upgrading to the patched version of Devolutions Server, conducting thorough access control reviews, and implementing continuous monitoring for suspicious authentication patterns. Security teams should also evaluate their existing security controls to ensure that similar vulnerabilities do not exist in other components of their infrastructure that may be subject to similar access control flaws.