CVE-2024-1621 in uniFLOW Online
Summary
by MITRE • 09/02/2024
The registration process of uniFLOW Online (NT-ware product) apps, prior to and including version 2024.1.0, can be compromised when email login is enabled on the tenant. Those tenants utilising email login in combination with Microsoft Safe Links or similar are impacted. This vulnerability may allow the attacker to register themselves against a genuine user in the system and allow malicious users with similar access and capabilities via the app to the existing genuine user.
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Analysis
by VulDB Data Team • 09/17/2024
The vulnerability identified as CVE-2024-1621 affects uniFLOW Online applications, specifically targeting the registration process of NT-ware products. This security flaw exists in versions prior to and including 2024.1.0, creating a significant risk for organizations utilizing email-based login mechanisms within their tenant configurations. The vulnerability becomes particularly concerning when email login functionality is combined with Microsoft Safe Links or similar security measures, as it creates an exploitable condition that undermines the integrity of user authentication processes.
The technical flaw stems from insufficient validation mechanisms during the user registration phase of the uniFLOW Online application. When email login is enabled, the system fails to properly verify the authenticity of registration requests, allowing malicious actors to potentially create accounts that appear to belong to legitimate users. This weakness enables attackers to register themselves using email addresses associated with genuine users, effectively creating a scenario where unauthorized individuals can assume the identity of legitimate system users. The vulnerability operates at the application layer, specifically affecting the identity management and user authentication components of the software.
The operational impact of this vulnerability extends beyond simple account takeover scenarios, as it fundamentally compromises the trust model within the uniFLOW Online environment. Attackers who successfully exploit this flaw can gain access to existing user capabilities and permissions, potentially leading to data breaches, unauthorized system modifications, and privilege escalation within the tenant environment. The vulnerability particularly affects organizations that rely on email-based authentication combined with security services like Microsoft Safe Links, as these environments create additional attack vectors that can be leveraged to bypass normal security controls. This weakness can result in persistent unauthorized access and may allow attackers to maintain long-term presence within the system.
Organizations should implement immediate mitigations including updating to the latest version of uniFLOW Online where this vulnerability has been addressed. Security teams should also consider implementing additional verification mechanisms during the registration process, such as email confirmation requirements, CAPTCHA validation, or multi-factor authentication for new user accounts. The vulnerability aligns with CWE-20, which addresses "Improper Input Validation" and relates to ATT&CK technique T1078.004 for valid accounts and T1566 for social engineering attacks that could leverage this weakness. Organizations should conduct thorough security assessments of their email login configurations and review access controls to ensure that unauthorized users cannot exploit this registration flaw to gain legitimate user privileges.