CVE-2019-1010174
📋 TL;DR
CVE-2019-1010174 is a command injection vulnerability in CImg Library that allows remote code execution. Attackers can execute arbitrary commands by providing malicious URLs to the load_network() function. This affects applications using CImg Library v2.3.3 and earlier to load images from untrusted sources.
💻 Affected Systems
- CImg Library
📦 What is this software?
⚠️ Risk & Real-World Impact
Worst Case
Full system compromise with attacker gaining complete control over the affected system, potentially leading to data theft, ransomware deployment, or lateral movement within the network.
Likely Case
Remote code execution with the privileges of the application using CImg, potentially allowing file system access, data exfiltration, or further exploitation.
If Mitigated
Limited impact if proper input validation and sandboxing are implemented, potentially restricting damage to the application's context.
🎯 Exploit Status
Exploitation is straightforward - attacker provides malicious URL with command injection payload. No authentication required if application accepts external URLs.
🛠️ Fix & Mitigation
✅ Official Fix
Patch Version: v2.3.4
Vendor Advisory: https://framagit.org/dtschump/CImg/commit/5ce7a426b77f814973e56182a0e76a2b04904146
Restart Required: No
Instructions:
1. Update CImg Library to version 2.3.4 or later. 2. Replace vulnerable CImg files with patched version. 3. Recompile any applications using CImg. 4. Test functionality after update.
🔧 Temporary Workarounds
Disable network image loading
allPrevent use of load_network() function by modifying application code to only load images from local sources.
Input validation and sanitization
allImplement strict URL validation and sanitization before passing to load_network() function.
🧯 If You Can't Patch
- Implement strict network controls to prevent applications from accessing untrusted URLs
- Run vulnerable applications in isolated containers with minimal privileges
🔍 How to Verify
Check if Vulnerable:
Check CImg version in source code or compiled application. If version <= 2.3.3 and application uses load_network() with user input, it's vulnerable.Check Version:
grep -r "CImg_VERSION" in source code or check package manager for installed versionVerify Fix Applied:
Verify CImg version is 2.3.4 or later. Test that malicious URLs no longer execute commands.📡 Detection & Monitoring
Log Indicators:
- Unusual command execution from application process
- Failed attempts to execute system commands
- Suspicious URL patterns in application logs
Network Indicators:
- Outbound connections to unusual ports from application
- DNS requests for command-and-control domains
SIEM Query:
process:cmdline:*curl* OR process:cmdline:*wget* OR process:cmdline:*bash* AND process:parent_name:[application_using_cimg]🔗 References
- https://framagit.org/dtschump/CImg/commit/5ce7a426b77f814973e56182a0e76a2b04904146
- https://lists.debian.org/debian-lts-announce/2019/09/msg00030.html
- https://lists.debian.org/debian-lts-announce/2020/10/msg00033.html
- https://framagit.org/dtschump/CImg/commit/5ce7a426b77f814973e56182a0e76a2b04904146
- https://lists.debian.org/debian-lts-announce/2019/09/msg00030.html
- https://lists.debian.org/debian-lts-announce/2020/10/msg00033.html
