CVE-2025-0227 Overview
CVE-2025-0227 is an information disclosure vulnerability in Tsinghua Unigroup Electronic Archives System version 3.2.210802(62532). The flaw resides in the /Logs/Annals/downLoad.html endpoint, where manipulation of the path argument allows an attacker to read arbitrary files from the underlying server. The issue is classified under CWE-200: Exposure of Sensitive Information to an Unauthorized Actor. Exploitation requires network access with low privileges and no user interaction. A public proof-of-concept has been released, increasing the likelihood of opportunistic exploitation against exposed instances.
Critical Impact
A remote authenticated attacker can read sensitive files from the archive system by controlling the path parameter, leading to disclosure of configuration data, credentials, or archived records.
Affected Products
- Tsinghua Unigroup Electronic Archives System 3.2.210802(62532)
- Vulnerable endpoint: /Logs/Annals/downLoad.html
- Vulnerable parameter: path
Discovery Timeline
- 2025-01-05 - CVE-2025-0227 published to NVD
- 2026-06-17 - Last updated in NVD database
Technical Details for CVE-2025-0227
Vulnerability Analysis
The vulnerability exists in the log download handler exposed at /Logs/Annals/downLoad.html. The endpoint accepts a client-controlled path argument that identifies which file to return. The application fails to validate or canonicalize this path before reading the file from disk. As a result, an attacker can supply traversal sequences or absolute paths to retrieve files outside the intended log directory.
Because the flaw only affects confidentiality, integrity and availability of the host are not directly impacted. However, exposed contents may include database configuration, credential material, or sensitive archive documents that enable follow-on attacks. Public references at VulDB entry #290217 and a GitHub proof-of-concept provide reproduction details.
Root Cause
The root cause is missing input validation on the path parameter passed to the download handler. The application concatenates the user-supplied value into a file read operation without enforcing a whitelist of allowed files or restricting reads to a specific directory. This design pattern reflects [CWE-200] combined with path traversal characteristics.
Attack Vector
An attacker sends a crafted HTTP request to /Logs/Annals/downLoad.html with a malicious path value pointing to a target file. The server processes the request and returns the file contents in the response body. Exploitation is remote and requires only low-privilege access to the web interface. See the published PoC repository for request structure details.
Detection Methods for CVE-2025-0227
Indicators of Compromise
- HTTP requests to /Logs/Annals/downLoad.html containing suspicious path parameter values such as absolute paths or directory traversal sequences (../, ..\).
- Outbound responses from the archive server containing file contents unrelated to standard log downloads.
- Repeated download requests from a single source enumerating varied path values.
Detection Strategies
- Deploy web application firewall rules that inspect the path parameter for traversal sequences and reject non-whitelisted values.
- Correlate access logs for the /Logs/Annals/downLoad.html endpoint against a baseline of expected administrative activity.
- Alert on anomalous response sizes from the download endpoint that exceed typical log file dimensions.
Monitoring Recommendations
- Enable verbose HTTP access logging on the archive server and forward logs to a central analytics platform.
- Monitor authentication events preceding download requests to distinguish legitimate operator activity from abuse.
- Track filesystem access on the archive host for reads outside the designated log directory.
How to Mitigate CVE-2025-0227
Immediate Actions Required
- Restrict network access to the archive system so the web interface is reachable only from trusted management networks.
- Audit accounts with access to the archive application and revoke unused or shared credentials.
- Review historical access logs for the affected endpoint to identify any prior exploitation attempts.
Patch Information
At the time of publication, no vendor advisory or patch is referenced in the NVD entry for Tsinghua Unigroup Electronic Archives System 3.2.210802(62532). Operators should contact the vendor for remediation status and monitor VulDB analysis #290217 for updates.
Workarounds
- Place the application behind a reverse proxy that blocks or normalizes requests containing ../ or absolute paths in query parameters.
- Apply operating-system-level file permissions so the web application user cannot read sensitive files outside its working directory.
- Disable the /Logs/Annals/downLoad.html endpoint at the proxy layer if log download functionality is not required for operations.
Disclaimer: This content was generated using AI. While we strive for accuracy, please verify critical information with official sources.
