CVE-2024-39906
📋 TL;DR
This CVE describes a command injection vulnerability in Haven blog's IndieAuth functionality that allows authenticated attackers to execute arbitrary commands by tricking administrators into clicking malicious links. The vulnerability leads to remote code execution and affects all Haven blog installations using vulnerable versions. Only authenticated users can exploit this, but administrators are the primary target.
💻 Affected Systems
- Haven blog
⚠️ 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 server compromise with complete control over the Haven blog server, data theft, lateral movement to other systems, and persistent backdoor installation.
Likely Case
Attacker gains shell access on the Haven blog server, potentially accessing sensitive blog data, modifying content, or using the server as a foothold for further attacks.
If Mitigated
If proper network segmentation and least privilege are implemented, impact is limited to the Haven application server with minimal lateral movement potential.
🎯 Exploit Status
Exploitation requires social engineering to get an administrator to click a malicious link, but the technical execution is straightforward once the link is accessed.
🛠️ Fix & Mitigation
✅ Official Fix
Patch Version: Commit c52f07c or later
Vendor Advisory: https://github.com/havenweb/haven/security/advisories/GHSA-65cm-7g24-hm9f
Restart Required: Yes
Instructions:
1. Backup your Haven blog data. 2. Update to the latest Haven version or apply commit c52f07c. 3. Restart the Haven application server. 4. Verify the fix by checking the commit hash.
🔧 Temporary Workarounds
No official workarounds
allThe vendor states there are no known workarounds for this vulnerability.
🧯 If You Can't Patch
- Implement strict network segmentation to isolate the Haven blog server from critical systems
- Enforce principle of least privilege for Haven application user and monitor for suspicious command execution
🔍 How to Verify
Check if Vulnerable:
Check if your Haven installation includes commit c52f07c. If not, you are vulnerable.Check Version:
cd /path/to/haven && git log --oneline -1Verify Fix Applied:
Verify that commit c52f07c is present in your Haven git history: git log --oneline | grep c52f07c📡 Detection & Monitoring
Log Indicators:
- Unusual command execution in Haven logs
- IndieAuth requests with suspicious parameters
- Shell command patterns in HTTP requests
Network Indicators:
- Outbound connections from Haven server to unexpected destinations
- Unusual process spawning patterns
SIEM Query:
source="haven.log" AND ("command" OR "exec" OR "system" OR "`" OR "$") AND NOT expected_command_pattern