CVE-2022-0895
📋 TL;DR
CVE-2022-0895 is a static code injection vulnerability in Microweber CMS prior to version 1.3, allowing attackers to inject malicious code into static files, potentially leading to remote code execution. It affects users running vulnerable versions of Microweber, particularly those with internet-facing installations. This can compromise website integrity and data security.
💻 Affected Systems
- Microweber CMS
📦 What is this software?
Microweber by Microweber
⚠️ Risk & Real-World Impact
Worst Case
Full system compromise via remote code execution, enabling data theft, defacement, or malware deployment.
Likely Case
Unauthorized code injection leading to website defacement, data manipulation, or backdoor installation.
If Mitigated
Limited impact if patched promptly, with only minor disruptions or no exploitation due to security controls.
🎯 Exploit Status
Exploit details are publicly available, making it easy for attackers to weaponize.
🛠️ Fix & Mitigation
✅ Official Fix
Patch Version: 1.3 and later
Vendor Advisory: https://github.com/microweber/microweber/commit/b2baab6e582b2efe63788d367a2bb61a2fa26470
Restart Required: No
Instructions:
1. Update Microweber to version 1.3 or later via the admin panel or manual download. 2. Apply the patch from the GitHub commit. 3. Verify the update by checking the version in the admin interface.
🔧 Temporary Workarounds
Restrict File Uploads
allTemporarily disable or restrict file upload functionality to prevent code injection.
Modify Microweber configuration to disable uploads or set strict file type validation.
🧯 If You Can't Patch
- Implement web application firewall (WAF) rules to block suspicious file uploads and injection attempts.
- Isolate the Microweber instance from critical networks and monitor for unusual activity.
🔍 How to Verify
Check if Vulnerable:
Check the Microweber version in the admin panel or via the system info page; if below 1.3, it is vulnerable.Check Version:
In Microweber admin, navigate to Settings > System Info or run a database query for version info.Verify Fix Applied:
Confirm the version is 1.3 or higher and review the applied patch from the GitHub commit.📡 Detection & Monitoring
Log Indicators:
- Unusual file uploads or modifications in static directories, unexpected PHP or script executions.
Network Indicators:
- HTTP requests with malicious payloads targeting file upload endpoints.
SIEM Query:
Example: 'source="microweber_logs" AND (event="file_upload" OR event="code_injection")'🔗 References
- https://github.com/microweber/microweber/commit/b2baab6e582b2efe63788d367a2bb61a2fa26470
- https://huntr.dev/bounties/3c070828-fd00-476c-be33-9c877172363d
- https://github.com/microweber/microweber/commit/b2baab6e582b2efe63788d367a2bb61a2fa26470
- https://huntr.dev/bounties/3c070828-fd00-476c-be33-9c877172363d
