CVE-2024-37532 in WebSphere Application Server
Summary
by MITRE • 06/20/2024
IBM WebSphere Application Server 8.5 and 9.0 is vulnerable to identity spoofing by an authenticated user due to improper signature validation. IBM X-Force ID: 294721.
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Analysis
by VulDB Data Team • 08/21/2024
IBM WebSphere Application Server versions 8.5 and 9.0 contain a critical identity spoofing vulnerability that allows authenticated users to manipulate digital signatures and impersonate other users within the system. This flaw resides in the application server's signature validation mechanism, which fails to properly verify the authenticity of digital signatures used for user authentication and authorization processes. The vulnerability stems from inadequate cryptographic validation routines that permit forged signatures to be accepted as legitimate, creating a pathway for privilege escalation and unauthorized access to sensitive resources. This weakness directly aligns with CWE-347, which addresses improper verification of cryptographic signatures, and represents a significant breach in the server's security model that undermines the integrity of user authentication mechanisms. The vulnerability is particularly dangerous because it requires only authenticated access to exploit, meaning that any user who can establish a session within the application server can potentially leverage this flaw to assume the identity of other users. Attackers can craft malicious requests with manipulated signatures that bypass the server's authentication checks, allowing them to execute operations with elevated privileges or access data belonging to other users. This type of attack falls under the ATT&CK technique T1550.001, which covers unauthorized access through valid accounts, and T1550.002 for use of stolen credentials. The impact extends beyond simple identity theft, as authenticated users with access to the application server can potentially escalate their privileges to administrative levels, access confidential data, modify application configurations, or disrupt service availability. The vulnerability is particularly concerning in enterprise environments where WebSphere Application Server serves as a core component of business-critical applications and where user authentication is paramount for maintaining data integrity and system security.
The technical implementation of this vulnerability demonstrates a fundamental flaw in how the application server validates cryptographic signatures during authentication processes. When users authenticate to the WebSphere Application Server, the system relies on digital signatures to verify user identities and maintain session integrity. The improper signature validation occurs during the verification phase where the server accepts manipulated signatures that should have been rejected due to cryptographic inconsistencies or tampering. This weakness enables attackers to exploit the server's trust in digital signatures by crafting malicious requests that contain forged signature data. The validation process fails to adequately check signature integrity, allowing attackers to bypass authentication mechanisms entirely or manipulate existing sessions to gain unauthorized access to protected resources. The vulnerability affects both major versions of IBM WebSphere Application Server, indicating a systemic issue within the cryptographic validation framework that requires comprehensive remediation across affected platforms. Organizations running these versions face significant risk of data breaches, unauthorized system modifications, and potential compromise of entire application environments. The attack vector is particularly insidious because it leverages legitimate authentication flows, making it difficult to detect through standard intrusion detection systems that might not recognize the subtle signature manipulation as malicious activity.
Organizations utilizing IBM WebSphere Application Server 8.5 and 9.0 must implement immediate mitigations to protect against this identity spoofing vulnerability. The primary recommendation involves applying the latest security patches and updates provided by IBM to address the signature validation flaw. Until patches are deployed, organizations should consider implementing additional security controls such as enhanced monitoring of authentication events, implementation of multi-factor authentication mechanisms, and network segmentation to limit access to affected systems. Security teams should also conduct comprehensive audits of user access permissions and monitor for unusual authentication patterns that might indicate exploitation attempts. The vulnerability's classification as a high-risk issue necessitates immediate attention from security operations teams and should be prioritized alongside other critical vulnerabilities in the organization's security posture. Additional defensive measures include implementing strict access controls, regularly reviewing user permissions, and establishing robust incident response procedures specifically designed to handle identity spoofing attacks. Organizations should also consider deploying web application firewalls and intrusion prevention systems that can detect and block suspicious signature manipulation attempts. The implementation of these mitigations aligns with ATT&CK techniques T1078 for valid accounts and T1566 for credential harvesting, ensuring comprehensive protection against exploitation of this vulnerability. Regular security assessments and penetration testing should be conducted to verify the effectiveness of implemented controls and identify any potential additional weaknesses in the authentication infrastructure.