CVE-2024-27488 Overview
CVE-2024-27488 is a critical Incorrect Access Control vulnerability affecting ZLMediaKit versions 1.0 through 8.0. This vulnerability allows remote attackers to escalate privileges and obtain sensitive information due to a hardcoded secret parameter used for HTTP RESTful API authentication. The application system enables the HTTP API interface by default and relies on this static secret parameter for authentication, creating a significant security weakness.
Critical Impact
Remote attackers can bypass authentication and gain unauthorized access to ZLMediaKit's HTTP API, potentially leading to full system compromise, privilege escalation, and exposure of sensitive information.
Affected Products
- ZLMediaKit version 1.0
- ZLMediaKit versions through 8.0
- All ZLMediaKit installations with default HTTP API configuration
Discovery Timeline
- 2024-04-08 - CVE-2024-27488 published to NVD
- 2024-11-21 - Last updated in NVD database
Technical Details for CVE-2024-27488
Vulnerability Analysis
This vulnerability falls under CWE-259 (Use of Hard-coded Password), a critical security flaw that undermines the entire authentication mechanism of the affected application. ZLMediaKit exposes an HTTP RESTful API interface that is enabled by default, making it immediately accessible upon installation. The authentication mechanism relies on a secret parameter that is hardcoded within the application, meaning all installations share the same default authentication credential.
The hardcoded nature of this secret means that any attacker who obtains knowledge of this value—whether through source code analysis, documentation review, or information from other compromised installations—can authenticate to any vulnerable ZLMediaKit instance. This effectively renders the authentication mechanism useless against informed attackers.
Root Cause
The root cause of CVE-2024-27488 is the implementation of a hardcoded secret value for API authentication. Instead of generating unique secrets during installation or requiring administrators to configure custom authentication credentials, ZLMediaKit ships with a static default secret. This design decision prioritizes ease of initial setup over security, creating a widespread vulnerability across all default installations.
Attack Vector
The attack vector is network-based, requiring no user interaction or special privileges. An attacker can remotely target the HTTP API interface, which is exposed by default. By using the known hardcoded secret parameter, attackers can:
- Authenticate to the HTTP RESTful API without legitimate credentials
- Access administrative functions exposed through the API
- Extract sensitive configuration data and media streams
- Potentially escalate privileges within the application
- Manipulate streaming configurations and media content
The attack complexity is low since the hardcoded secret can be discovered through examination of the source code or default configuration files. A proof-of-concept demonstrating this vulnerability is available in the GitHub Gist published by the researcher.
Detection Methods for CVE-2024-27488
Indicators of Compromise
- Unexpected API requests to ZLMediaKit endpoints using the default hardcoded secret
- Unauthorized access to media streams or configuration endpoints
- Unusual administrative actions performed via the HTTP API without corresponding legitimate user activity
- Access logs showing API authentication from unfamiliar or suspicious IP addresses
Detection Strategies
- Monitor HTTP API access logs for authentication attempts using known default secret values
- Implement network-level detection rules for requests targeting ZLMediaKit API endpoints from untrusted sources
- Deploy intrusion detection signatures that identify exploitation patterns associated with hardcoded credential abuse
- Audit ZLMediaKit configurations to identify installations still using default authentication parameters
Monitoring Recommendations
- Enable detailed logging for all HTTP API authentication attempts and administrative actions
- Set up alerts for API access from IP addresses outside expected ranges
- Regularly audit authentication configurations to ensure hardcoded secrets have been replaced
- Monitor for bulk data extraction or unusual streaming access patterns
How to Mitigate CVE-2024-27488
Immediate Actions Required
- Change the default secret parameter to a strong, randomly generated value unique to each installation
- Restrict network access to the HTTP API interface using firewall rules or network segmentation
- Disable the HTTP API interface if not required for operational purposes
- Audit access logs to identify any potential unauthorized access that may have occurred
Patch Information
Administrators should upgrade ZLMediaKit to a version beyond 8.0 if a patched release is available. Consult the ZLMediaKit project repository and release notes for security updates addressing this vulnerability. The proof-of-concept publication provides additional technical context for understanding the vulnerability scope.
Workarounds
- Generate a strong, unique secret value using a cryptographically secure random generator and update the ZLMediaKit configuration
- Implement network-level access controls to restrict HTTP API access to trusted IP addresses only
- Deploy a reverse proxy with additional authentication layers in front of the ZLMediaKit API
- Consider disabling the HTTP API entirely if the functionality is not required for your deployment
# Configuration example - Replace default secret with a strong random value
# Generate a secure random secret (example using openssl)
openssl rand -hex 32
# Update ZLMediaKit configuration file to use the new secret
# Location may vary: typically config.ini or similar
# secret=YOUR_GENERATED_SECRET_HERE
Disclaimer: This content was generated using AI. While we strive for accuracy, please verify critical information with official sources.
