CVE-2024-5716: Logsign SecOps Authentication Bypass Flaw

CVE-2024-5716 Overview

CVE-2024-5716 is a critical authentication bypass vulnerability affecting Logsign Unified SecOps Platform. This vulnerability allows remote attackers to bypass authentication on affected installations without requiring any prior authentication. The flaw exists within the password reset mechanism, where improper restriction of excessive authentication attempts (CWE-307) enables attackers to brute-force password reset codes and gain unauthorized access to the system.

Critical Impact

Remote attackers can reset user passwords and completely bypass authentication on affected Logsign Unified SecOps Platform installations, potentially gaining full administrative access to security operations infrastructure.

Affected Products

• Logsign Unified SecOps Platform (versions prior to 6.4.8)

Discovery Timeline

• 2024-11-22 - CVE-2024-5716 published to NVD
• 2025-07-10 - Last updated in NVD database

Technical Details for CVE-2024-5716

Vulnerability Analysis

This authentication bypass vulnerability stems from a fundamental weakness in how the Logsign Unified SecOps Platform handles password reset requests. The platform fails to implement adequate rate limiting or account lockout mechanisms on the password reset functionality, allowing attackers to make unlimited authentication attempts. This weakness, classified as CWE-307 (Improper Restriction of Excessive Authentication Attempts), creates a direct path for attackers to circumvent the authentication controls that protect the security platform.

The vulnerability is particularly severe given that security operations platforms like Logsign typically have elevated access to sensitive security data, logs, and potentially other integrated security tools within an organization's infrastructure.

Root Cause

The root cause of this vulnerability is the lack of restriction on excessive authentication attempts within the password reset mechanism. The application does not implement:

• Rate limiting on password reset requests
• Account lockout after failed attempts
• CAPTCHA or similar anti-automation controls
• Time-based restrictions between reset attempts

This allows an attacker to systematically enumerate or brute-force password reset verification codes until a valid combination is found, effectively bypassing the authentication mechanism entirely.

Attack Vector

The attack leverages the network-accessible password reset functionality to perform brute-force attacks against the reset mechanism. An unauthenticated attacker can:

1. Initiate a password reset request for a target user account
2. Systematically attempt different verification codes without restriction
3. Upon successful code validation, reset the user's password to a value controlled by the attacker
4. Authenticate to the system using the newly set credentials

The vulnerability is particularly dangerous because it requires no prior authentication, can be exploited remotely over the network, and requires no user interaction. This was tracked as ZDI-CAN-24164 by the Zero Day Initiative before public disclosure.

Detection Methods for CVE-2024-5716

Indicators of Compromise

• Unusually high volume of password reset requests from single IP addresses or against single user accounts
• Sequential or patterned verification code submissions to the password reset endpoint
• Successful password changes following periods of elevated reset activity
• Authentication from unfamiliar IP addresses following password reset events

Detection Strategies

• Monitor web application logs for excessive requests to the password reset API endpoint
• Implement alerting on anomalous patterns of failed verification attempts
• Configure SIEM rules to correlate password reset activity with subsequent successful authentications
• Review access logs for accounts that experienced password changes followed by immediate administrative actions

Monitoring Recommendations

• Enable verbose logging on authentication and password reset functions
• Deploy network-based intrusion detection signatures for brute-force attack patterns
• Implement user behavior analytics to detect account compromise post-exploitation
• Monitor for configuration changes or data exfiltration following any suspicious authentication events

How to Mitigate CVE-2024-5716

Immediate Actions Required

• Upgrade Logsign Unified SecOps Platform to version 6.4.8 or later immediately
• Review authentication logs for signs of brute-force attempts against the password reset mechanism
• Audit user accounts for unauthorized password changes
• Implement network-level rate limiting on the Logsign web interface if patching cannot be immediately performed

Patch Information

Logsign has addressed this vulnerability in version 6.4.8 of the Unified SecOps Platform. Organizations should apply this update as soon as possible. For detailed release information, refer to the Logsign Release Notes Version 6.4.8. Additional technical details are available in the Zero Day Initiative Advisory ZDI-24-616.

Workarounds

• Implement web application firewall (WAF) rules to rate-limit requests to the password reset endpoint
• Restrict network access to the Logsign management interface to trusted IP ranges only
• Enable multi-factor authentication if available to add an additional layer of protection
• Consider placing the platform behind a VPN until patching can be completed

# Example: Configure network-level access restriction using iptables
# Restrict access to Logsign web interface to trusted management subnet
iptables -A INPUT -p tcp --dport 443 -s 10.0.100.0/24 -j ACCEPT
iptables -A INPUT -p tcp --dport 443 -j DROP