Product Information
- Product Name: License Center
- Vendor: QNAP
- Product Type: NAS license management application
- Affected Versions: All License Center versions below 2.0.36
- Fixed Version: License Center 2.0.36 and later
- Patch Release Date: January 3–4, 2025
Vulnerability Summary
| CVE ID | Vulnerability Type | Severity | CVSS (Estimated) | Privileges Required | Impact |
|---|---|---|---|---|---|
| CVE-2025-52871 | Out-of-Bounds Read | High | 7.1 | Authenticated User | Sensitive data disclosure |
| CVE-2025-53597 | Buffer Overflow | Critical | 8.6 | Administrator | Process crash, memory corruption |
Both vulnerabilities exist within the same License Center application and were resolved together in the January 2025 update.
CVE-2025-52871 – Out-of-Bounds Read
Vulnerability Description
This vulnerability is caused by improper bounds checking when processing user-supplied input in the License Center service. Under specific conditions, the application reads memory outside the allocated buffer and returns that data to the requesting user.
The issue does not require administrative access. Any authenticated user can potentially trigger it.
Technical Impact
- Reads unintended memory locations
- Exposes sensitive in-memory data
- Does not directly modify system state
Data Potentially Exposed
- License activation keys
- Authentication tokens
- Session identifiers
- Internal application memory fragments
Exploitation Scenario (How It Could Be Abused)
- Attacker authenticates using a standard user account.
- Sends specially crafted requests to License Center endpoints.
- Manipulates request parameters to exceed expected bounds.
- Application responds with memory content beyond intended limits.
- Attacker harvests exposed data for further attacks.
Exploitability Assessment
- Exploitability: Moderate
- Exploit Availability: No public PoC at disclosure time
- Attack Complexity: Low once request structure is understood
MITRE ATT&CK Mapping
- TA0006 – Credential Access
- T1552 – Unsecured Credentials
- T1005 – Data from Local System
Detection & Monitoring
Relevant Log Sources
- License Center application logs
- NAS authentication logs
- API and web access logs
Indicators of Suspicious Activity
- Repeated malformed API requests
- Abnormal parameter lengths in License Center calls
- Unexpected memory-related error messages
Detection Rule Concept (High-Level)
- Alert when License Center receives requests with parameters exceeding normal size thresholds.
- Flag repeated boundary-testing patterns from the same user account.
CVE-2025-53597 – Buffer Overflow
Vulnerability Description
This issue occurs due to insufficient validation of input size passed to License Center functions. When an administrator submits oversized input, the application writes data past the allocated memory buffer.
This can destabilize the service or corrupt adjacent memory regions.
Technical Impact
- Application crashes (Denial of Service)
- Potential memory corruption
- Risk of broader system instability
While no confirmed remote code execution has been observed, the memory overwrite condition makes this vulnerability high risk.
Exploitation Scenario
- Attacker gains administrative access (legitimate or compromised).
- Submits oversized or malformed input to License Center.
- Memory buffer overflows.
- License Center service crashes or becomes unstable.
- Repeated exploitation can result in persistent denial-of-service.
Exploitability Assessment
- Exploitability: Moderate to High
- Exploit Availability: No public exploit released
- Primary Risk: Abuse by compromised admin accounts
MITRE ATT&CK Mapping
- TA0040 – Impact
- T1499 – Endpoint Denial of Service
- T1068 – Exploitation for Privilege Escalation (secondary risk)
Detection & Monitoring
Relevant Log Sources
- System event logs
- License Center crash reports
- Process monitoring logs
Indicators of Compromise
- Repeated License Center crashes
- Segmentation fault or memory exception errors
- Unusual administrative actions preceding crashes
Detection Rule Concept
- Alert on multiple License Center restarts within short time windows.
- Correlate crashes with oversized request payloads from admin accounts.
Mitigation & Remediation
Immediate Actions
- Upgrade License Center to version 2.0.36 or later
- Restrict and audit administrative access
- Rotate administrator credentials
- Monitor License Center logs post-update
Hardening Recommendations
- Enforce least-privilege access
- Enable multi-factor authentication for admins
- Centralize logging for anomaly detection
- Regularly update QNAP applications
Official Patch Information
- Patch: License Center v2.0.36+
- Distribution: Official QNAP App Center
- Vendor Advisory: QNAP Security Advisory (January 2025)
Final Risk Assessment
These vulnerabilities affect a core management component of QNAP systems. CVE-2025-52871 poses a real data exposure risk even to low-privileged users, while CVE-2025-53597 can be leveraged to disrupt services if administrative access is misused. Systems that remain unpatched should be considered high risk, especially if exposed to internal or external networks.
