CVE-2022-36045 in NodeBB
Summary
by MITRE • 08/31/2022
NodeBB Forum Software is powered by Node.js and supports either Redis, MongoDB, or a PostgreSQL database. It utilizes web sockets for instant interactions and real-time notifications. `utils.generateUUID`, a helper function available in essentially all versions of NodeBB (as far back as v1.0.1 and potentially earlier) used a cryptographically insecure Pseudo-random number generator (`Math.random()`), which meant that a specially crafted script combined with multiple invocations of the password reset functionality could enable an attacker to correctly calculate the reset code for an account they do not have access to. This vulnerability impacts all installations of NodeBB. The vulnerability allows for an attacker to take over any account without the involvement of the victim, and as such, the remediation should be applied immediately (either via NodeBB upgrade or cherry-pick of the specific changeset. The vulnerability has been patched in version 2.x and 1.19.x. There is no known workaround, but the patch sets listed above will fully patch the vulnerability.
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Analysis
by VulDB Data Team • 10/10/2022
The vulnerability CVE-2022-36045 represents a critical security flaw in NodeBB forum software that stems from improper random number generation practices. This issue affects a fundamental component of the application's security infrastructure, specifically the `utils.generateUUID` helper function that has been present in NodeBB since version 1.0.1. The flaw manifests through the use of JavaScript's `Math.random()` function, which is inherently insecure for cryptographic purposes and produces predictable sequences that can be reverse-engineered by attackers with sufficient computational resources and knowledge of the system's behavior patterns. The vulnerability falls under CWE-330, which specifically addresses the use of insecure random number generators in security-sensitive contexts, and aligns with ATT&CK technique T1110.003 for credential access through brute force or password guessing attacks.
The operational impact of this vulnerability is severe and directly enables unauthorized account takeovers without requiring any victim interaction or cooperation. Attackers can exploit the predictable nature of the UUID generation to calculate valid password reset codes for arbitrary accounts within the forum system. This allows for complete unauthorized access to user accounts, potentially leading to data theft, content manipulation, and further exploitation of the compromised accounts within the forum ecosystem. The vulnerability affects all installations regardless of database backend choice, as the flaw exists at the application logic level rather than in database-specific components. The attack vector specifically targets the password reset functionality, which is a common entry point for credential compromise attacks, making this vulnerability particularly dangerous in environments where user accounts contain sensitive information or administrative privileges.
The remediation approach for CVE-2022-36045 requires immediate action through either upgrading to NodeBB version 2.x or 1.19.x, or applying the specific patch changeset that addresses the insecure random number generation. This vulnerability cannot be mitigated through workarounds as the issue lies in the core cryptographic implementation rather than in configuration or access controls. The patch implementation specifically addresses the use of `Math.random()` in favor of cryptographically secure random number generation methods that provide the unpredictability necessary for security-sensitive operations. Organizations must prioritize this remediation as the vulnerability enables complete account takeover capabilities, making it a critical priority in any security operations center's response matrix. The patched versions ensure that UUID generation follows industry standards for cryptographic security and align with NIST SP 800-90A guidelines for random number generation in security applications, eliminating the attack surface that previously allowed for predictable token generation and unauthorized access to user accounts.