CVE-2025-34337 – This vulnerability in eGovFramework's common co... (How to Fix)

Q: What is the severity of CVE-2025-34337?

CVE-2025-34337 has a CVSS score of N/A (Unknown). This vulnerability in eGovFramework's common components allows unauthenticated attackers to bypass access controls and retrieve arbitrary stored files. Attackers can abuse image upload endpoints as encryption oracles to generate valid ciphertexts, then replay them to file-serving APIs. All systems running eGovFramework/egovframe-common-components up to version 4.3.1 are affected.

📋 TL;DR

This vulnerability in eGovFramework's common components allows unauthenticated attackers to bypass access controls and retrieve arbitrary stored files. Attackers can abuse image upload endpoints as encryption oracles to generate valid ciphertexts, then replay them to file-serving APIs. All systems running eGovFramework/egovframe-common-components up to version 4.3.1 are affected.

💻 Affected Systems

Products:

eGovFramework/egovframe-common-components

Versions: Up to and including version 4.3.1

Operating Systems: Any OS running the affected software

Default Config Vulnerable: ⚠️ Yes

Notes: All deployments using the vulnerable Web Editor image upload functionality are affected regardless of configuration.

⚠️ Manual Verification Required

This CVE does not have specific version information in our database, so automatic vulnerability detection cannot determine if your system is affected.

Why? The CVE database entry doesn't specify which versions are vulnerable (no version ranges provided by the vendor/NVD).

🔒 Custom verification scripts are available for registered users. Sign up free to download automated test scripts.

Recommended Actions:

Review the CVE details at NVD
Check vendor security advisories for your specific version
Test if the vulnerability is exploitable in your environment
Consider updating to the latest version as a precaution

⚠️ Risk & Real-World Impact

🔴

Worst Case

Complete compromise of sensitive files including configuration files, credentials, personal data, and system files leading to full system compromise.

🟠

Likely Case

Unauthenticated file disclosure of sensitive information stored on the server, potentially including user data, configuration files, and application source code.

🟢

If Mitigated

Limited impact if proper file system permissions and additional authentication layers are in place, though encryption bypass still possible.

🌐 Internet-Facing: HIGH - Unauthenticated exploitation allows remote attackers to access files without any authentication.

🏢 Internal Only: HIGH - Even internally, the vulnerability allows unauthorized access to files that should be protected.

🎯 Exploit Status

Public PoC: ⚠️ Yes

Weaponized: LIKELY

Unauthenticated Exploit: ⚠️ Yes

Complexity: LOW

Detailed exploitation steps are publicly documented in security advisories, making exploitation straightforward for attackers.

🛠️ Fix & Mitigation

✅ Official Fix

Patch Version: Not available

Vendor Advisory: https://www.egovframe.go.kr/eng/sub.do?menuNo=2

Restart Required: No

Instructions:

No official patch available. Monitor vendor channels for updates and apply immediately when released.

🔧 Temporary Workarounds

Disable vulnerable endpoints

all

Block access to the vulnerable image upload endpoints to prevent exploitation

# In web server configuration (Apache example):
RewriteRule ^/utl/wed/insertImage\.do$ - [F]
RewriteRule ^/utl/wed/insertImageCk\.do$ - [F]

Implement WAF rules

all

Add web application firewall rules to block exploitation attempts

# Example ModSecurity rule:
SecRule REQUEST_URI "@rx ^/(utl/wed/insertImage\.do|utl/wed/insertImageCk\.do|cmm/fms/getImage\.do|utl/web/imageSrc\.do)" \
    "id:1001,phase:1,deny,status:403,msg:'Blocking eGovFramework exploit attempt'

🧯 If You Can't Patch

Implement network segmentation to isolate affected systems from untrusted networks
Deploy additional authentication layers and file access controls independent of the vulnerable encryption mechanism

🔍 How to Verify

Check if Vulnerable:

Check if your application uses eGovFramework/egovframe-common-components version 4.3.1 or earlier and has the Web Editor functionality enabled. Test by attempting to access /utl/wed/insertImage.do endpoint.

Check Version:

# Check Maven dependencies or project configuration for: egovframe-common-components version <= 4.3.1

Verify Fix Applied:

Verify that the vulnerable endpoints are no longer accessible or that proper authentication and authorization checks are in place for file access.

📡 Detection & Monitoring

Log Indicators:

Multiple requests to /utl/wed/insertImage.do or /utl/wed/insertImageCk.do followed by requests to /cmm/fms/getImage.do or /utl/web/imageSrc.do with encrypted parameters
Unusual file access patterns from unauthenticated users

Network Indicators:

HTTP requests to vulnerable endpoints from external IPs without authentication
Pattern of upload followed by file retrieval requests

SIEM Query:

source_ip=* AND (uri_path="/utl/wed/insertImage.do" OR uri_path="/utl/wed/insertImageCk.do") AND (uri_path="/cmm/fms/getImage.do" OR uri_path="/utl/web/imageSrc.do") WITHIN 60s

📊 Metadata

CVE ID: CVE-2025-34337

CVSS v3 Score: N/A (Unknown)

CWE: CWE-345

EPSS Score: 0.11% exploit probability (30.1th percentile)

Published: November 19, 2025

Last Updated: November 19, 2025

🔗 References

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