CVE-2024-6583
📋 TL;DR
A path traversal vulnerability in stangirard/quivr allows attackers to upload files to arbitrary S3 bucket paths by manipulating file paths in upload requests. This affects users of the quivr software who have S3 bucket integration enabled. The vulnerability could lead to unauthorized file storage and potential data manipulation.
💻 Affected Systems
- stangirard/quivr
📦 What is this software?
Quivr by Quivr
⚠️ Risk & Real-World Impact
Worst Case
Attackers could overwrite critical system files, upload malicious payloads to sensitive directories, or exfiltrate data by storing files in unauthorized locations, potentially leading to complete system compromise.
Likely Case
Attackers upload files to unintended S3 bucket paths, causing data integrity issues, unauthorized storage consumption, or placement of malicious files that could be executed later.
If Mitigated
With proper input validation and path sanitization, the vulnerability would be prevented, limiting file uploads to intended directories only.
🎯 Exploit Status
Exploitation requires access to the file upload functionality. The vulnerability is straightforward to exploit once an attacker can interact with the upload endpoint.
🛠️ Fix & Mitigation
✅ Official Fix
Patch Version: Check the GitHub repository for the latest patched version
Vendor Advisory: https://huntr.com/bounties/c310b500-ec26-4121-8d3a-8e863181346f
Restart Required: Yes
Instructions:
1. Update to the latest version of stangirard/quivr from the official GitHub repository. 2. Verify the patch includes path traversal fixes. 3. Restart the application service.
🔧 Temporary Workarounds
Input Validation Filter
allImplement server-side validation to reject file paths containing directory traversal sequences like '../' or absolute paths.
Implement input sanitization in file upload handler code
S3 Bucket Policy Restrictions
allConfigure S3 bucket policies to restrict write operations to specific prefixes/directories only.
aws s3api put-bucket-policy --bucket BUCKET_NAME --policy file://policy.json
🧯 If You Can't Patch
- Disable file upload functionality if not required
- Implement a web application firewall (WAF) with path traversal detection rules
🔍 How to Verify
Check if Vulnerable:
Test file upload functionality with paths containing '../' sequences to see if they are accepted and stored in unintended locations.Check Version:
Check package.json or repository version tags for quivr versionVerify Fix Applied:
Attempt the same path traversal test after patching; uploads with traversal sequences should be rejected or sanitized.📡 Detection & Monitoring
Log Indicators:
- File upload requests containing '../' or similar traversal patterns
- Unexpected file writes to S3 bucket paths outside expected directories
Network Indicators:
- HTTP POST requests to upload endpoints with suspicious path parameters
SIEM Query:
source="web_logs" AND (url_path="*upload*" AND (request_body="*../*" OR request_body="*..\\*"))