CVE-2024-6406 Overview
CVE-2024-6406 is a missing authentication and authorization vulnerability affecting Yordam Information Technology's Mobile Library Application. The flaw allows remote attackers to retrieve embedded sensitive data because the application fails to enforce authentication for critical functions. The issue is tracked under [CWE-306: Missing Authentication for Critical Function].
The vulnerability affects all versions of the Mobile Library Application prior to version 5.0. Turkey's national cybersecurity center (USOM) published advisory TR-24-1496 to notify affected organizations. Because the attack requires network access with low privileges and no user interaction, exposed mobile library deployments face a realistic risk of data disclosure.
Critical Impact
Unauthenticated or low-privileged network attackers can extract embedded sensitive data from the mobile library application, breaking confidentiality of stored records.
Affected Products
- Yordam Information Technology Mobile Library Application versions prior to 5.0
- Deployments exposing the mobile library backend to untrusted networks
- Library systems integrated with the vulnerable mobile client
Discovery Timeline
- 2024-09-18 - CVE-2024-6406 published to the National Vulnerability Database
- 2026-06-17 - Last updated in NVD database
Technical Details for CVE-2024-6406
Vulnerability Analysis
The Mobile Library Application exposes critical functions that return embedded sensitive data without validating the requester's identity or permissions. An attacker interacting with the application over the network can invoke these functions and read data that should be restricted to authorized users.
The classification under [CWE-306] indicates the application either omits authentication checks entirely on specific endpoints or fails to enforce them consistently. Combined with missing authorization checks, the flaw allows even low-privileged accounts to reach data outside their intended scope.
Because library systems typically store patron records, borrowing history, and administrative credentials, exposed data can support further account compromise. The scope change indicated by the CVSS 4.0 vector suggests exploitation impacts resources beyond the vulnerable component itself.
Root Cause
The root cause is the absence of authentication and authorization enforcement on functions that expose embedded sensitive data. Developers embedded credentials or secrets directly in the application while relying on obscurity rather than access control to protect them. The application logic accepts requests to sensitive endpoints without verifying session state or role membership.
Attack Vector
Exploitation occurs over the network. An attacker sends crafted requests to the mobile application's backend endpoints that expose embedded data. Because no authentication challenge is issued, the server responds with the sensitive content. See the USOM Notification TR-24-1496 and the Siber Güvenlik Advisory TR-24-1496 for technical context.
Detection Methods for CVE-2024-6406
Indicators of Compromise
- Unusual volumes of requests to mobile library API endpoints from single source addresses
- Successful HTTP 200 responses to endpoints that should return 401 or 403 without valid credentials
- Outbound data transfers from the mobile library server to unfamiliar external addresses
Detection Strategies
- Review web server and application logs for requests to sensitive endpoints lacking session tokens or authorization headers
- Correlate access patterns against expected patron activity baselines to identify anomalous enumeration
- Deploy network monitoring rules that flag repeated queries to library data endpoints from non-mobile user agents
Monitoring Recommendations
- Enable verbose access logging on the mobile library backend and forward logs to a centralized SIEM
- Alert on authentication bypass patterns such as direct object reference requests without prior login events
- Monitor for lateral movement from the library server toward identity or database infrastructure
How to Mitigate CVE-2024-6406
Immediate Actions Required
- Upgrade Yordam Mobile Library Application to version 5.0 or later where the authentication controls are enforced
- Restrict network exposure of the mobile library backend to trusted networks or VPN-connected clients only
- Rotate any credentials, API keys, or secrets that may have been embedded in the affected application
- Audit access logs for signs of prior exploitation before the patch was applied
Patch Information
Yordam Information Technology addressed the vulnerability in Mobile Library Application version 5.0. Administrators should consult the Siber Güvenlik Advisory TR-24-1496 for official remediation guidance and coordinate with the vendor to confirm the upgrade path for their deployment.
Workarounds
- Place the mobile library backend behind a reverse proxy that enforces authentication before requests reach the application
- Apply network access control lists to limit inbound traffic to known mobile client IP ranges
- Disable or firewall the affected endpoints until the upgrade to version 5.0 can be completed
Disclaimer: This content was generated using AI. While we strive for accuracy, please verify critical information with official sources.
