CVE-2023-5840 in linkstack
Summary
by MITRE • 10/29/2023
Weak Password Recovery Mechanism for Forgotten Password in GitHub repository linkstackorg/linkstack prior to v4.2.9.
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Analysis
by VulDB Data Team • 11/19/2023
The vulnerability identified as CVE-2023-5840 represents a critical weakness in the password recovery mechanism of the LinkStack open source project, specifically affecting versions prior to v4.2.9. This issue resides within the forgotten password functionality that is fundamental to user account security and access management. The weakness manifests in the password recovery process where the system fails to implement adequate security controls to verify user identity during account recovery operations, creating a potential pathway for unauthorized access to user accounts.
The technical flaw stems from insufficient validation mechanisms during the password reset process, allowing attackers to exploit the recovery system without proper authentication. This vulnerability falls under the category of weak authentication mechanisms and can be classified as CWE-640, Weak Password Recovery Mechanism, which specifically addresses the failure to properly authenticate users during password reset operations. The vulnerability enables attackers to potentially reset passwords for arbitrary user accounts, particularly when the recovery process relies on predictable or easily guessable recovery tokens, email addresses, or security questions that lack sufficient entropy.
From an operational perspective, this vulnerability poses significant risks to user account security and data integrity within the LinkStack ecosystem. Attackers who exploit this weakness can gain unauthorized access to user accounts, potentially leading to data breaches, account takeovers, and compromise of sensitive information stored within the platform. The impact extends beyond individual user accounts to potentially affect the broader community of users who rely on the platform for sharing links and maintaining their digital presence. The vulnerability is particularly concerning in environments where users may reuse passwords across multiple services, creating cascading security risks.
The exploitation of this vulnerability aligns with ATT&CK technique T1213.002, which covers Credential Access through the use of password recovery mechanisms. This attack vector demonstrates how weak recovery processes can serve as an entry point for attackers to bypass primary authentication controls. Security professionals should note that this vulnerability exemplifies the importance of implementing robust multi-factor authentication and proper session management during recovery processes. The fix implemented in version 4.2.9 likely involved strengthening the password recovery mechanism through improved token generation, enhanced verification procedures, and more rigorous user identity confirmation methods.
Organizations and developers utilizing the LinkStack platform should prioritize immediate upgrade to version 4.2.9 or later to remediate this vulnerability. The mitigation strategy should also include implementing additional security measures such as rate limiting for password recovery requests, enhanced email verification processes, and monitoring for suspicious recovery activities. Security teams should conduct comprehensive assessments of similar password recovery mechanisms within their own applications to identify and address potential weaknesses that could expose their systems to similar attacks. The vulnerability serves as a reminder of the critical importance of secure authentication design principles and the need for continuous security testing and validation of authentication mechanisms.