CVE-2023-35932
📋 TL;DR
CVE-2023-35932 is a configuration injection vulnerability in the jcvi Python library that allows malicious user input to reach configuration files unsanitized. This can potentially lead to command injection if configuration values are executed as shell code. Users of jcvi for genome assembly and annotation are affected.
💻 Affected Systems
- jcvi (Python library for genome assembly and annotation)
📦 What is this software?
Jcvi by Jcvi Project
⚠️ Risk & Real-World Impact
Worst Case
Remote code execution with the privileges of the jcvi process, potentially leading to full system compromise.
Likely Case
Limited command injection affecting specific jcvi functionality, potentially disrupting genomic analysis workflows.
If Mitigated
No impact if proper input validation and sanitization are implemented before configuration processing.
🎯 Exploit Status
Exploitation requires the attacker to control input that reaches the vulnerable configuration processing code. No public exploit code has been identified.
🛠️ Fix & Mitigation
✅ Official Fix
Patch Version: None available
Vendor Advisory: https://github.com/tanghaibao/jcvi/security/advisories/GHSA-x49m-3cw7-gq5q
Restart Required: No
Instructions:
No official patch available. Monitor the jcvi GitHub repository for security updates and apply when released.
🔧 Temporary Workarounds
Input Validation and Sanitization
allImplement strict input validation and sanitization for all user-provided data before it reaches jcvi configuration processing functions.
# Implement custom validation in your code before calling jcvi functions
# Example: Validate and sanitize user input using allowlists
Restrict jcvi Usage
allLimit jcvi usage to trusted environments and users only, avoiding processing of untrusted input data.
# Run jcvi in isolated environments or containers
# Implement access controls to restrict who can submit data to jcvi processes
🧯 If You Can't Patch
- Isolate jcvi execution in sandboxed environments or containers with minimal privileges
- Implement network segmentation to restrict jcvi systems from accessing sensitive resources
🔍 How to Verify
Check if Vulnerable:
Check if your code uses jcvi functions that process user input for configuration. Review the vulnerable code at jcvi/apps/base.py lines 2227-2228.Check Version:
pip show jcvi | grep VersionVerify Fix Applied:
When a patch becomes available, verify by checking that user input is properly sanitized before reaching configuration processing functions.📡 Detection & Monitoring
Log Indicators:
- Unusual command execution patterns from jcvi processes
- Configuration file modifications with suspicious content
Network Indicators:
- Unexpected outbound connections from jcvi systems
- Unusual data transfers from genomic analysis systems
SIEM Query:
process_name: 'python' AND cmdline: '*jcvi*' AND (cmdline: '*sh*' OR cmdline: '*bash*' OR cmdline: '*curl*' OR cmdline: '*wget*')🔗 References
- https://github.com/tanghaibao/jcvi/blob/cede6c65c8e7603cb266bc3395ac8f915ea9eac7/jcvi/apps/base.py#LL2227C1-L2228C41
- https://github.com/tanghaibao/jcvi/security/advisories/GHSA-x49m-3cw7-gq5q
- https://github.com/tanghaibao/jcvi/blob/cede6c65c8e7603cb266bc3395ac8f915ea9eac7/jcvi/apps/base.py#LL2227C1-L2228C41
- https://github.com/tanghaibao/jcvi/security/advisories/GHSA-x49m-3cw7-gq5q
