CVE-2021-37934 in Huntflow
Summary
by MITRE • 12/10/2021
Due to insufficient server-side login-attempt limit enforcement, a vulnerability in /account/login in Huntflow Enterprise before 3.10.14 could allow an unauthenticated, remote user to perform multiple login attempts for brute-force password guessing.
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Analysis
by VulDB Data Team • 12/15/2021
The vulnerability identified as CVE-2021-37934 affects Huntflow Enterprise versions prior to 3.10.14 and resides within the account login endpoint at /account/login. This represents a critical security flaw that undermines the system's authentication mechanisms through inadequate rate limiting controls. The vulnerability enables unauthorized remote attackers to conduct brute-force password guessing attacks without requiring prior authentication credentials, creating a significant exposure for systems utilizing this software.
The technical root cause of this vulnerability stems from insufficient server-side enforcement of login attempt limits, which violates fundamental security principles for authentication systems. According to CWE-307, this issue falls under weak authentication mechanisms where the system fails to implement proper account lockout or rate limiting procedures. The absence of effective throttling mechanisms allows attackers to rapidly submit multiple login requests, making automated password guessing attacks highly effective. This flaw directly impacts the system's ability to protect against credential stuffing, dictionary attacks, and other forms of automated authentication brute-force attempts.
From an operational perspective, this vulnerability creates substantial risk for organizations using Huntflow Enterprise, as it provides attackers with a straightforward path to compromise user accounts through repeated login attempts. The remote nature of the exploit means that attackers can target the system from any location without requiring physical access or network proximity. This vulnerability aligns with ATT&CK technique T1110.003, which describes the use of credential stuffing and brute force methods to gain unauthorized access. Organizations may experience unauthorized account access, data breaches, and potential escalation to broader system compromise if attackers successfully exploit this vulnerability.
The impact extends beyond immediate unauthorized access to include potential business disruption and compliance violations. Systems affected by this vulnerability may face increased operational overhead due to monitoring and incident response activities, while the organization's security posture suffers from weakened authentication controls. The vulnerability also creates potential for cascading effects where compromised accounts could lead to further system penetration or data exfiltration. Organizations should prioritize immediate remediation through updating to Huntflow Enterprise version 3.10.14 or later, which implements proper rate limiting and login attempt controls. Additional mitigations may include implementing network-level rate limiting, monitoring login attempts for suspicious patterns, and configuring account lockout mechanisms to prevent exploitation of this vulnerability.