CVE-2024-3187
📋 TL;DR
CVE-2024-3187 involves memory corruption vulnerabilities (Use After Free and Double Free) in Goahead web server when JavaScript templates are processed. Attackers with JST file modification privileges can exploit these to cause denial of service or potentially execute code. Affects Goahead versions ≤6.0.0 with the ME_GOAHEAD_JAVASCRIPT flag enabled.
💻 Affected Systems
- Goahead Web Server
⚠️ 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.
- 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
Remote code execution leading to complete system compromise, though this requires specific memory layout conditions and is unlikely.
Likely Case
Denial of service through application crashes or instability from memory corruption.
If Mitigated
Limited impact if proper access controls prevent unauthorized JST file modifications.
🎯 Exploit Status
Exploitation requires attacker to have privileges to modify JST template files and the ME_GOAHEAD_JAVASCRIPT flag must be enabled.
🛠️ Fix & Mitigation
✅ Official Fix
Patch Version: 6.0.1 or later
Vendor Advisory: https://www.nozominetworks.com/labs/vulnerability-advisories-cve-2024-3187
Restart Required: Yes
Instructions:
1. Download Goahead version 6.0.1 or later from official sources. 2. Replace existing installation with patched version. 3. Restart the Goahead service.
🔧 Temporary Workarounds
Disable JavaScript Template Support
linuxRecompile Goahead without ME_GOAHEAD_JAVASCRIPT flag to disable vulnerable feature
./configure --disable-goahead-javascript
make clean
make
make install
Restrict JST File Permissions
linuxSet strict file permissions to prevent unauthorized modification of JST template files
chmod 640 *.jst
chown root:www-data *.jst
🧯 If You Can't Patch
- Implement strict access controls on JST template directories to prevent unauthorized modifications
- Deploy web application firewall (WAF) rules to detect and block suspicious JST template requests
🔍 How to Verify
Check if Vulnerable:
Check Goahead version with 'goahead -v' or examine binary/configuration for ME_GOAHEAD_JAVASCRIPT flagCheck Version:
goahead -vVerify Fix Applied:
Confirm version is 6.0.1 or later and verify JST template functionality works without crashes📡 Detection & Monitoring
Log Indicators:
- Multiple memory allocation/deallocation errors
- Goahead process crashes or restarts
- Unusual JST template file modifications
Network Indicators:
- Abnormal HTTP requests to JST template endpoints
- Repeated connection attempts followed by service disruption
SIEM Query:
source="goahead.log" AND ("segmentation fault" OR "double free" OR "use after free")