CVE-2023-5690 in modoboa
Summary
by MITRE • 10/25/2023
Cross-Site Request Forgery (CSRF) in GitHub repository modoboa/modoboa prior to 2.2.2.
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Analysis
by VulDB Data Team • 11/12/2023
Cross-site request forgery vulnerabilities represent a critical class of web application security flaws that allow attackers to perform unauthorized actions on behalf of authenticated users within the context of a targeted web application. The specific vulnerability identified in the modoboa/modoboa repository affects versions prior to 2.2.2 and falls under the category of CWE-352, which defines CSRF as a vulnerability where an attacker tricks a victim into executing unwanted actions on a web application where they are authenticated. This type of attack exploits the trust that a web application places in a user's browser by leveraging the fact that browsers automatically include authentication credentials such as cookies with every request to a domain.
The technical implementation of this CSRF flaw in modoboa likely involves the absence or weakness of anti-CSRF token mechanisms within the application's forms and API endpoints. Modern web applications typically implement CSRF protection through the use of unique, unpredictable tokens that are generated for each user session and embedded within forms and requests. When a legitimate user submits a form, the server validates that the submitted token matches the one stored in the user's session, thereby ensuring that the request originated from the authenticated user rather than from an attacker-controlled domain. In versions prior to 2.2.2 of modoboa, this protection mechanism was either absent or insufficiently implemented, allowing attackers to craft malicious requests that would be executed by authenticated users without their knowledge or consent.
The operational impact of this vulnerability extends beyond simple data theft or modification to potentially enable complete account compromise and unauthorized administrative actions within the modoboa email management platform. An attacker could exploit this weakness to add new users, modify existing user configurations, change email routing rules, or even delete entire mailboxes through carefully crafted requests that leverage the victim's authenticated session. Given that modoboa is designed as an email hosting solution with administrative capabilities, successful exploitation could result in unauthorized access to sensitive email communications, data exfiltration, and potential disruption of email services for all users within the compromised system. The vulnerability becomes particularly dangerous when considering that many email administrators may have elevated privileges within the platform.
Security professionals should note that this type of vulnerability aligns with ATT&CK technique T1566 which describes social engineering tactics involving the exploitation of web application vulnerabilities to gain unauthorized access. The recommended mitigation strategy involves upgrading to modoboa version 2.2.2 or later where proper CSRF protection mechanisms have been implemented and tested. Organizations should also implement additional defensive measures including thorough input validation, proper session management, and regular security assessments of their email infrastructure. The vulnerability demonstrates the importance of maintaining up-to-date software versions and implementing comprehensive security controls that address both application-level and network-level threats. System administrators should conduct immediate vulnerability scans to identify systems running affected versions of modoboa and ensure all instances are updated to the latest secure release while also reviewing and strengthening existing CSRF protection mechanisms throughout their email infrastructure.