CVE-2025-0970 in Movidesk (Yago Martins)
Summary
by MITRE • 02/03/2025
A vulnerability was found in Zenvia Movidesk up to 25.01.22. It has been declared as problematic. Affected by this vulnerability is an unknown functionality of the file /Account/Login. The manipulation of the argument ReturnUrl leads to open redirect. The attack can be launched remotely. The exploit has been disclosed to the public and may be used. Upgrading to version 25.01.22.245a473c54 is able to address this issue. It is recommended to upgrade the affected component.
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Analysis
by VulDB Data Team • 10/10/2025
The vulnerability identified as CVE-2025-0970 represents a critical security flaw within the Zenvia Movidesk platform, specifically affecting versions prior to 25.01.22.245a473c54. This issue resides within the authentication mechanism of the system, particularly in the Account/Login endpoint where the ReturnUrl parameter is processed without adequate validation. The vulnerability has been classified as an open redirect vulnerability, which allows attackers to manipulate the redirection behavior of the application during the login process. This type of flaw falls under CWE-601, which specifically addresses URL redirection vulnerabilities that can be exploited to redirect users to malicious websites. The attack vector is entirely remote, meaning that an attacker does not require physical access to the system or any special privileges within the network to exploit this vulnerability. The disclosure of this exploit to the public community significantly increases the risk of real-world attacks, as malicious actors can now leverage this weakness to compromise user sessions and potentially gain unauthorized access to sensitive information.
The technical implementation of this vulnerability stems from insufficient input validation within the ReturnUrl parameter processing. When users attempt to log into the Movidesk system, the application expects a ReturnUrl parameter that specifies where users should be redirected after successful authentication. However, the system fails to properly validate or sanitize this parameter, allowing attackers to inject malicious URLs that can redirect users to phishing sites or other malicious destinations. This flaw creates a pathway for social engineering attacks where users might be tricked into believing they are accessing a legitimate service while actually being redirected to a fraudulent website. The open redirect vulnerability specifically enables attackers to craft URLs that appear legitimate to users but ultimately lead to unauthorized destinations, making it particularly dangerous for enterprise environments where users frequently access applications through web interfaces. The vulnerability is classified under the ATT&CK framework as a technique for Initial Access through Phishing, where the open redirect serves as a delivery mechanism for malicious payloads.
The operational impact of this vulnerability extends beyond simple redirection attacks, as it can facilitate more sophisticated attack chains involving credential theft and session hijacking. An attacker could potentially use this vulnerability to redirect users to a phishing page that mimics the legitimate Movidesk login interface, capturing credentials and session information. This risk is particularly concerning for organizations that rely heavily on web-based authentication systems, as it undermines the trust model that users place in the application's security mechanisms. The vulnerability also represents a significant risk to user privacy and data integrity, as it allows for unauthorized redirection of user traffic without proper verification of destination legitimacy. Organizations using affected versions of Movidesk may experience compromised user sessions and potential data breaches if attackers successfully exploit this weakness. The impact is amplified by the fact that the exploit has been publicly disclosed, making it readily available for malicious actors to implement without requiring advanced technical skills. Additionally, this vulnerability could potentially be chained with other security flaws to create more severe attack scenarios, making it essential for organizations to address this issue promptly.
The recommended mitigation strategy involves upgrading to version 25.01.22.245a473c54 or later, which contains the necessary patches to resolve the open redirect vulnerability. This upgrade process should be carefully planned and executed to ensure that no functionality is broken during the transition. Organizations should also implement additional security controls such as validating redirect URLs against a predefined whitelist of trusted domains and implementing proper input sanitization for all user-supplied parameters. Network administrators should consider implementing web application firewalls that can detect and block suspicious redirect patterns, while security teams should monitor for any attempts to exploit this vulnerability in their environments. The fix addresses the root cause by ensuring that the ReturnUrl parameter is properly validated and sanitized before any redirection occurs, preventing attackers from injecting malicious URLs that could lead users to unauthorized destinations. Organizations should also conduct thorough testing of the upgraded system to ensure that legitimate redirection functionality continues to work properly while eliminating the security vulnerability. This vulnerability serves as a reminder of the importance of proper input validation and the need for regular security updates in enterprise applications, particularly those handling user authentication and sensitive data access.