CVE-2025-40843
📋 TL;DR
CodeChecker versions up to 6.26.1 contain a buffer overflow vulnerability in the internal ldlogger library when executing the 'log' command. This could allow attackers to execute arbitrary code or cause denial of service. Users running vulnerable CodeChecker versions are affected.
💻 Affected Systems
- CodeChecker
📦 What is this software?
Codechecker by Ericsson
⚠️ Risk & Real-World Impact
Worst Case
Remote code execution leading to complete system compromise, data theft, or lateral movement within the environment.
Likely Case
Denial of service causing CodeChecker to crash, potentially disrupting static analysis workflows and CI/CD pipelines.
If Mitigated
Limited impact with proper network segmentation and least privilege access controls in place.
🎯 Exploit Status
Exploitation requires access to execute CodeChecker commands and knowledge of buffer overflow techniques.
🛠️ Fix & Mitigation
✅ Official Fix
Patch Version: 6.26.2 or later
Vendor Advisory: https://github.com/Ericsson/codechecker/security/advisories/GHSA-5xf2-f6ch-6p8r
Restart Required: No
Instructions:
1. Update CodeChecker to version 6.26.2 or later using your package manager or from source. 2. Verify the update was successful by checking the version. 3. No restart required as this is a command-line tool.
🔧 Temporary Workarounds
Avoid CodeChecker log command
allTemporarily avoid using the vulnerable 'CodeChecker log' command until patched.
# Use alternative logging methods or disable CodeChecker log functionality
🧯 If You Can't Patch
- Restrict access to CodeChecker to trusted users only
- Implement network segmentation to isolate CodeChecker instances from critical systems
🔍 How to Verify
Check if Vulnerable:
Run 'CodeChecker version' and check if version is 6.26.1 or earlierCheck Version:
CodeChecker versionVerify Fix Applied:
Run 'CodeChecker version' and confirm version is 6.26.2 or later📡 Detection & Monitoring
Log Indicators:
- Unexpected crashes of CodeChecker process
- Abnormal memory usage patterns in CodeChecker logs
Network Indicators:
- Unusual network connections from CodeChecker processes
SIEM Query:
process_name:"CodeChecker" AND (event_type:crash OR memory_usage:high)