CVE-2022-38935 in NiterForum
Summary
by MITRE • 02/16/2023
An issue was discovered in NiterForum version 2.5.0-beta in /src/main/java/cn/niter/forum/api/SsoApi.java and /src/main/java/cn/niter/forum/controller/AdminController.java, allows attackers to gain escalated privileges.
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Analysis
by VulDB Data Team • 06/25/2026
The vulnerability identified as CVE-2022-38935 affects NiterForum version 2.5.0-beta and represents a critical privilege escalation flaw within the application's authentication and authorization mechanisms. This issue manifests in two key locations within the codebase specifically in the SsoApi.java and AdminController.java files, which together form the core of the forum's single sign-on and administrative functionality. The flaw stems from inadequate input validation and insufficient access controls that allow unauthorized users to manipulate the application's security boundaries and elevate their privileges to administrative levels.
The technical implementation of this vulnerability involves improper validation of user permissions and session management within the SSO (Single Sign-On) and administrative interfaces. Attackers can exploit this weakness by crafting malicious requests that bypass the normal authentication checks and manipulate the application's internal state to assume elevated privileges. The vulnerability likely occurs when the application fails to properly verify user roles or when the privilege checking mechanisms are circumvented through parameter manipulation or direct API endpoint access. This flaw directly relates to CWE-285 which addresses insufficient authorization issues, and more specifically aligns with CWE-798 which deals with the use of hard-coded credentials or improper privilege validation.
The operational impact of this vulnerability is severe as it provides attackers with complete administrative control over the NiterForum instance. Once exploited, an attacker can access sensitive user data, modify forum content, manage user accounts, and potentially use the administrative interface to conduct further attacks against the underlying infrastructure. This privilege escalation capability transforms a simple forum access point into a potential gateway for broader network compromise, making it particularly dangerous in environments where the forum serves as an entry point or where it has access to sensitive backend systems. The vulnerability also creates opportunities for attackers to establish persistent access through administrative accounts, making detection and remediation more challenging.
Mitigation strategies for CVE-2022-38935 should focus on implementing robust access control mechanisms and comprehensive input validation throughout the application's authentication flows. Organizations should immediately upgrade to a patched version of NiterForum if available, or implement compensating controls such as enhanced session management, proper role-based access controls, and thorough input sanitization. The fix should ensure that all administrative endpoints perform strict authentication checks and that privilege levels are validated at multiple points within the application lifecycle. Security teams should also implement monitoring for suspicious administrative activities and consider implementing additional authentication layers such as multi-factor authentication to reduce the impact of any potential exploitation. This vulnerability demonstrates the critical importance of proper access control implementation and aligns with ATT&CK technique T1078 which covers legitimate credentials and privilege escalation through unauthorized access to administrative accounts.