CVE-2024-5826
📋 TL;DR
This vulnerability allows remote attackers to execute arbitrary code on servers running vulnerable versions of vanna-ai/vanna by manipulating LLM-generated prompts. The lack of sandboxing in the vanna.ask function enables prompt injection attacks that bypass intended restrictions. Any application using the vulnerable vanna-ai/vanna library with internet-facing endpoints is affected.
💻 Affected Systems
- vanna-ai/vanna
⚠️ 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 allowing attacker to execute arbitrary commands, access sensitive data, install malware, pivot to other systems, and maintain persistent access.
Likely Case
Attacker gains shell access to the backend server, potentially accessing application data, credentials, and internal network resources.
If Mitigated
Limited impact with proper input validation and sandboxing, potentially only allowing limited code execution within restricted environment.
🎯 Exploit Status
Exploitation requires only the ability to send crafted prompts to the vulnerable endpoint. The vulnerability is well-documented in public bug bounty reports.
🛠️ Fix & Mitigation
✅ Official Fix
Patch Version: Not specified in provided references
Vendor Advisory: https://huntr.com/bounties/90620087-44ac-4e43-b659-3c5d30889369
Restart Required: Yes
Instructions:
1. Check current vanna-ai/vanna version
2. Update to the latest patched version from official repository
3. Restart all services using the library
4. Verify the fix by testing prompt injection attempts
🔧 Temporary Workarounds
Disable vanna.ask function
allTemporarily disable or restrict access to the vulnerable vanna.ask function until patching is complete.
# Modify application code to remove or comment out vanna.ask calls
# Implement API gateway rules to block requests to vulnerable endpoints
Implement input validation and sanitization
allAdd strict input validation and sanitization for all prompts before passing to vanna.ask function.
# Implement regex filtering for dangerous patterns
# Use allow-lists for acceptable prompt formats
# Add length and character restrictions
🧯 If You Can't Patch
- Implement network segmentation to isolate vulnerable systems from critical infrastructure
- Deploy application-level firewall with rules to detect and block suspicious prompt patterns
🔍 How to Verify
Check if Vulnerable:
Test if crafted prompts containing code execution payloads can be processed by vanna.ask function. Check if exec() is called without proper sandboxing in src/vanna/base/base.py.Check Version:
pip show vanna-ai | grep VersionVerify Fix Applied:
Verify that the patched version implements proper sandboxing for LLM-generated code execution. Test that prompt injection attempts no longer result in arbitrary code execution.📡 Detection & Monitoring
Log Indicators:
- Unusual exec() function calls in application logs
- Suspicious Python code execution patterns
- Abnormal process spawning from vanna application
Network Indicators:
- Unusual outbound connections from vanna server
- Suspicious payloads in HTTP requests to vanna endpoints
SIEM Query:
source="vanna.logs" AND ("exec(" OR "subprocess" OR "os.system") AND NOT expected_pattern