CVE-2019-7215 in Sitefinity
Summary
by MITRE
Progress Sitefinity 10.1.6536 does not invalidate session cookies upon logouts. It instead tries to overwrite the cookie in the browser, but it remains valid on the server side. This means the cookie can be reused to maintain access to the account, even if the account credentials and permissions are changed.
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Analysis
by VulDB Data Team • 06/20/2020
The vulnerability identified as CVE-2019-7215 affects Progress Sitefinity version 10.1.6536 and represents a critical session management flaw that undermines the security of authenticated user sessions. This issue resides within the application's session handling mechanism where the system fails to properly invalidate session cookies upon user logout operations. The flaw manifests when the application attempts to overwrite the existing session cookie in the user's browser rather than completely destroying it, creating a persistent security risk that persists beyond the intended logout period.
From a technical perspective, this vulnerability constitutes a session fixation and session management weakness that aligns with CWE-613, which addresses insufficient session expiration and improper session invalidation. The system's failure to properly invalidate session tokens on the server side creates a scenario where an attacker can potentially reuse a valid session cookie to maintain unauthorized access to user accounts. This behavior violates fundamental security principles of session management and demonstrates a critical flaw in the application's access control mechanisms. The session cookie remains active on the server even after logout, allowing attackers to leverage the existing session token to access protected resources without re-authentication.
The operational impact of this vulnerability extends beyond simple unauthorized access, as it enables persistent session hijacking attacks that can remain undetected for extended periods. Attackers who obtain a valid session cookie can maintain access to accounts even after legitimate users have logged out, potentially gaining access to sensitive data, administrative functions, and system resources. This vulnerability particularly affects authenticated users within the Sitefinity CMS environment, where session tokens may be captured through various attack vectors including man-in-the-middle attacks, cross-site scripting exploits, or compromised client systems. The persistence of these session tokens allows for extended unauthorized access periods that can go unnoticed by both users and system administrators.
Security professionals should implement immediate mitigations including proper session invalidation mechanisms that completely destroy session tokens on the server side upon logout operations rather than merely overwriting them. Organizations should also consider implementing additional security controls such as session timeout mechanisms, IP binding for sessions, and regular session validation checks. The vulnerability's impact aligns with ATT&CK technique T1548.001 which covers legitimate credentials and session hijacking, and T1078 which addresses valid accounts and privilege escalation. Recommended remediation strategies include upgrading to patched versions of Progress Sitefinity, implementing robust session management policies, and conducting comprehensive security testing to identify similar session handling flaws across the application stack. Organizations must also establish monitoring procedures to detect unusual session behavior and implement proper session lifecycle management that ensures complete invalidation of authentication tokens upon user logout or system-initiated session termination.