How the Mentioned CVE Works:
CVE-2025-1890 is a critical vulnerability in ShishuoCMS version 1.1, specifically in the `handleRequest` function within the `ManageUpLoadAction.java` file. The flaw arises due to improper validation of the `file` argument, allowing attackers to upload malicious files without restrictions. This vulnerability can be exploited remotely, enabling attackers to execute arbitrary code, upload backdoors, or compromise the server. The exploit has been publicly disclosed, increasing the risk of widespread attacks. The CVSS 4.0 score of 5.3 (MEDIUM) reflects the potential impact, with attack vectors including network-based exploitation and low attack complexity.
DailyCVE Form:
Platform: ShishuoCMS
Version: 1.1
Vulnerability: Unrestricted File Upload
Severity: Critical
Date: 03/03/2025
(End of form)
What Undercode Say:
Analytics:
- Exploitation Likelihood: High due to public disclosure.
- Impact: Full server compromise, data theft, or service disruption.
- Affected Systems: ShishuoCMS 1.1 installations with default configurations.
Commands:
1. Check for Vulnerable Version:
grep -i "shishuocms" /path/to/application/version.txt
2. Mitigation Command:
chmod -R 755 /path/to/upload/directory
Exploit Code (PoC):
import requests
url = "http://target.com/upload"
files = {'file': open('malicious.php', 'rb')}
response = requests.post(url, files=files)
print(response.text)
Protection Code:
// Validate file type and size before upload
public boolean validateFile(File file) {
String[] allowedTypes = {"image/jpeg", "image/png"};
long maxSize = 1048576; // 1MB
return Arrays.asList(allowedTypes).contains(file.getContentType()) && file.getSize() <= maxSize;
}
URLs:
- Patch Information: ShishuoCMS Security Advisory
- Exploit Database: Exploit-DB Entry
- NVD Details: NVD CVE-2025-1890
Recommendations:
- Update: Upgrade to the latest version of ShishuoCMS if available.
- File Validation: Implement strict file type and size validation.
3. Access Control: Restrict upload directory permissions.
- Monitoring: Use intrusion detection systems (IDS) to monitor for suspicious uploads.
By following these steps, administrators can mitigate the risk posed by CVE-2025-1890 and protect their systems from potential exploitation.
References:
Reported By: https://nvd.nist.gov/vuln/detail/CVE-2025-1890
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