CVE-2024-55577
📋 TL;DR
A stack-based buffer overflow vulnerability in Linux Ratfor 1.06 and earlier allows attackers to execute arbitrary code by providing specially crafted files. This could lead to complete system compromise or denial of service. Users running vulnerable Ratfor versions on Linux systems are affected.
💻 Affected Systems
- Linux Ratfor
⚠️ 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
Full system compromise with root privileges, data theft, persistent backdoor installation, and complete system destruction.
Likely Case
Local privilege escalation or denial of service affecting the user running Ratfor, potentially leading to lateral movement within the environment.
If Mitigated
Limited impact due to proper file permissions, sandboxing, or SELinux/apparmor restrictions preventing code execution.
🎯 Exploit Status
Exploitation requires the attacker to provide a malicious file to Ratfor, which could be through build systems, automated processing, or user interaction.
🛠️ Fix & Mitigation
✅ Official Fix
Patch Version: Version 1.07 or later
Vendor Advisory: http://www.dgate.org/ratfor/
Restart Required: No
Instructions:
1. Check current version with 'ratfor --version' or 'rfc --version'. 2. Download and compile Ratfor 1.07+ from http://www.dgate.org/ratfor/. 3. Replace existing ratfor/rfc binaries with new compiled versions.
🔧 Temporary Workarounds
Restrict file processing
allLimit Ratfor to only process trusted files from specific directories
chmod 750 /usr/bin/ratfor
chmod 750 /usr/bin/rfc
Sandbox execution
allRun Ratfor in a container or chroot environment
docker run --read-only -v /trusted/files:/input ratfor:latest
🧯 If You Can't Patch
- Remove Ratfor from systems where it's not essential
- Implement strict file access controls and only allow processing of verified, trusted Ratfor files
🔍 How to Verify
Check if Vulnerable:
Check if Ratfor is installed and version is 1.06 or earlier: 'which ratfor && ratfor --version 2>/dev/null || echo "Not found"'Check Version:
ratfor --version 2>/dev/null || rfc --version 2>/dev/null || echo "Ratfor not found"Verify Fix Applied:
After patching, verify version is 1.07+: 'ratfor --version | grep -q "1\.0[7-9]\|1\.[1-9]" && echo "Patched" || echo "Vulnerable"'📡 Detection & Monitoring
Log Indicators:
- Segmentation fault crashes of ratfor/rfc processes
- Unusual child process spawning from ratfor
Network Indicators:
- None - this is a local file processing vulnerability
SIEM Query:
process.name:"ratfor" AND event.action:"segmentation_fault" OR process.name:"ratfor" AND process.child_count > 0