CVE-2012-4581 in Email
Summary
by MITRE
McAfee Email and Web Security (EWS) 5.x before 5.5 Patch 6 and 5.6 before Patch 3, and McAfee Email Gateway (MEG) 7.0 before Patch 1, does not disable the server-side session token upon the closing of the Management Console/Dashboard, which makes it easier for remote attackers to hijack sessions by capturing a session cookie and then modifying the response to a login attempt, related to a "Logout Failure" issue.
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Analysis
by VulDB Data Team • 04/25/2018
The vulnerability described in CVE-2012-4581 represents a critical session management flaw in McAfee Email and Web Security (EWS) and McAfee Email Gateway (MEG) products. This issue stems from improper session token handling during the logout process, creating a persistent security risk that directly impacts the integrity of authentication mechanisms. The vulnerability affects versions 5.x before 5.5 Patch 6 and 5.6 before Patch 3 for EWS, along with MEG 7.0 before Patch 1, indicating a widespread problem across multiple McAfee security products. The flaw specifically relates to the failure of the system to properly invalidate server-side session tokens when users close the Management Console or Dashboard interface, leaving sessions in an active state despite user logout actions.
From a technical perspective, this vulnerability manifests as a session hijacking opportunity for remote attackers who can capture valid session cookies during normal operation. The flaw operates through a "Logout Failure" mechanism where even though a user appears to have logged out, the server continues to recognize the session token as valid. Attackers can exploit this by capturing session cookies through various means such as man-in-the-middle attacks, network sniffing, or client-side compromises, then modifying subsequent login responses to maintain access to the administrative interface. This represents a classic session management weakness that aligns with CWE-613, which specifically addresses inadequate session handling and failure to properly invalidate session tokens upon logout events. The vulnerability essentially creates a window of opportunity for attackers to maintain persistent access to administrative functions without requiring valid credentials.
The operational impact of this vulnerability extends beyond simple unauthorized access, as it compromises the fundamental security posture of email security infrastructure. Organizations relying on these McAfee products face significant risks including unauthorized administrative access to email filtering policies, modification of security rules, access to sensitive email content, and potential lateral movement within network environments. The vulnerability particularly affects organizations with centralized email security management, where administrative access through the EWS or MEG interfaces provides broad control over email traffic filtering, threat detection, and security policy enforcement. This makes the vulnerability especially dangerous in enterprise environments where email security is critical for protecting against data breaches, phishing attacks, and other email-based threats.
Security professionals should implement immediate mitigations including ensuring all affected McAfee products are updated to the latest patch versions, which address the session token invalidation issue. Network monitoring should be enhanced to detect unusual session activity patterns and cookie usage anomalies. Organizations should also consider implementing additional authentication layers such as multi-factor authentication for administrative access, although this may not fully compensate for the underlying session management flaw. The vulnerability demonstrates the importance of proper session lifecycle management and aligns with ATT&CK technique T1566 which covers credential access through session hijacking. Additionally, this issue highlights the need for comprehensive security testing of authentication mechanisms, particularly around logout and session invalidation processes, as outlined in security frameworks such as NIST SP 800-63B for authentication and trust services. Organizations should also conduct regular security assessments to identify similar session management vulnerabilities in other security appliances and web applications.