CVE-2024-8334
📋 TL;DR
This vulnerability allows remote attackers to inject malicious content into application logs through improper output neutralization in Sweet-CMS's LogHandler middleware. It affects all users of Sweet-CMS up to commit 5f441e022b8876f07cde709c77b5be6d2f262e3f. While rated 'problematic' with moderate CVSS score, it could enable log poisoning attacks.
💻 Affected Systems
- master-nan Sweet-CMS
📦 What is this software?
Sweet Cms by Master Nan
⚠️ Risk & Real-World Impact
Worst Case
Attackers could inject malicious content into logs to obscure other attacks, corrupt log analysis systems, or potentially execute code if logs are processed by vulnerable parsers.
Likely Case
Log injection leading to log corruption, false log entries, and potential log analysis system disruption.
If Mitigated
Limited to log corruption without system compromise if proper log parsing and sanitization are implemented downstream.
🎯 Exploit Status
Remote exploitation is possible, but no public exploit code has been identified. The vulnerability is in log handling middleware.
🛠️ Fix & Mitigation
✅ Official Fix
Patch Version: Commit 2024c370e6c78b07b358c9d4257fa5d1be732c38
Vendor Advisory: https://github.com/master-nan/sweet-cms/commit/2024c370e6c78b07b358c9d4257fa5d1be732c38
Restart Required: Yes
Instructions:
1. Pull latest Sweet-CMS code from repository. 2. Verify commit 2024c370e6c78b07b358c9d4257fa5d1be732c38 is included. 3. Rebuild and redeploy application. 4. Restart Sweet-CMS service.
🔧 Temporary Workarounds
Log Sanitization Filter
allImplement middleware to sanitize log output before writing
# Add custom log sanitization in middleware chain
# Filter newlines, control characters, and special log formatting sequences
Disable Detailed Logging
allReduce logging verbosity to minimize attack surface
# Set log level to ERROR or higher
# Configure logging to exclude user-controlled data
🧯 If You Can't Patch
- Implement external log sanitization using tools like logstash filters or syslog-ng parsers
- Monitor logs for injection patterns and alert on suspicious log entries
🔍 How to Verify
Check if Vulnerable:
Check if your Sweet-CMS commit hash is 5f441e022b8876f07cde709c77b5be6d2f262e3f or earlier by examining the codebase or build metadata.Check Version:
git log --oneline -1 # Check latest commit hash in Sweet-CMS repositoryVerify Fix Applied:
Confirm commit 2024c370e6c78b07b358c9d4257fa5d1be732c38 is present in your codebase and the LogHandler function in middleware/log.go has been updated.📡 Detection & Monitoring
Log Indicators:
- Unusual log formatting, unexpected newlines or control characters in logs, log entries that break log parsing systems
Network Indicators:
- HTTP requests containing log injection payloads (newlines, special characters in user input fields)
SIEM Query:
source="sweet-cms-logs" AND (message="*\n*" OR message="*\r*" OR message="*\t*")🔗 References
- https://github.com/master-nan/sweet-cms/commit/2024c370e6c78b07b358c9d4257fa5d1be732c38
- https://github.com/master-nan/sweet-cms/issues/3
- https://github.com/master-nan/sweet-cms/issues/3#issuecomment-2314447003
- https://vuldb.com/?ctiid.276209
- https://vuldb.com/?id.276209
- https://vuldb.com/?submit.398805
