CVE-2022-23082
📋 TL;DR
CVE-2022-23082 is a path traversal vulnerability in CureKit versions v1.0.1 through v1.1.3 where the isFileOutsideDir function fails to properly sanitize user input. This allows attackers to access files outside the intended directory, potentially exposing sensitive system files. Organizations using vulnerable CureKit versions for file processing or security scanning are affected.
💻 Affected Systems
- CureKit
📦 What is this software?
⚠️ Risk & Real-World Impact
Worst Case
Complete system compromise via reading sensitive files like /etc/passwd, /etc/shadow, or application configuration files containing credentials, leading to privilege escalation or data exfiltration.
Likely Case
Unauthorized access to application files, configuration files, or other sensitive data stored on the server, potentially enabling further attacks.
If Mitigated
Limited impact with proper file permissions, network segmentation, and input validation in place, restricting access to non-critical files.
🎯 Exploit Status
Path traversal vulnerabilities are typically easy to exploit with basic knowledge of directory structures.
🛠️ Fix & Mitigation
✅ Official Fix
Patch Version: v1.1.4 and later
Vendor Advisory: https://github.com/whitesource/CureKit/commit/af35e870ed09411d2f1fae6db1b04598cd1a31b6
Restart Required: Yes
Instructions:
1. Update CureKit to version v1.1.4 or later. 2. Restart any services using CureKit. 3. Verify the fix by testing path traversal attempts.
🔧 Temporary Workarounds
Input Validation Wrapper
allImplement custom input validation to sanitize file paths before passing to isFileOutsideDir function.
# Example Python wrapper
import os
def safe_is_file_outside_dir(user_input, base_dir):
normalized = os.path.normpath(user_input)
if '..' in normalized or normalized.startswith('/'):
return True
return False
🧯 If You Can't Patch
- Implement strict file system permissions to limit accessible directories.
- Use network segmentation to isolate CureKit instances from sensitive systems.
🔍 How to Verify
Check if Vulnerable:
Check CureKit version; if between v1.0.1 and v1.1.3 inclusive, it's vulnerable. Test by attempting path traversal (e.g., '../../etc/passwd') in file input.Check Version:
curekit --version or check package manager (e.g., npm list curekit)Verify Fix Applied:
After updating to v1.1.4+, retest path traversal attempts; they should be blocked or sanitized.📡 Detection & Monitoring
Log Indicators:
- Unusual file access patterns, failed path traversal attempts in application logs.
- Multiple requests with '..' or absolute paths in file parameters.
Network Indicators:
- HTTP requests containing path traversal sequences in file-related parameters.
SIEM Query:
source="app_logs" AND (".." OR "/etc/" OR "/var/") AND file_parameter=*